feat(opencode): add OpenCode platform with Zen and GO account types

Keep the internal platform ID opencode_go. Product surface is OpenCode
with account_mode zen|go, model-aware routing across Chat Completions,
Responses, and Anthropic Messages, and X-OpenCode-Session derived from
prompt_cache_key / metadata.user_id so prompt cache can hit.

Unmatched models fall back to /v1/chat/completions. Related to #6742.

backend/ent/channelmonitor/channelmonitor.go

@@ -183,6 +183,7 @@ const (
 	ProviderZhipu       Provider = "zhipu"
 	ProviderDeepseek    Provider = "deepseek"
 	ProviderMinimax     Provider = "minimax"
+	ProviderOpencodeGo  Provider = "opencode_go"
 )
 
 func (pr Provider) String() string {
@@ -192,7 +193,7 @@ func (pr Provider) String() string {
 // ProviderValidator is a validator for the "provider" field enum values. It is called by the builders before save.
 func ProviderValidator(pr Provider) error {
 	switch pr {
-	case ProviderOpenai, ProviderAnthropic, ProviderGemini, ProviderGrok, ProviderAntigravity, ProviderKimi, ProviderZhipu, ProviderDeepseek, ProviderMinimax:
+	case ProviderOpenai, ProviderAnthropic, ProviderGemini, ProviderGrok, ProviderAntigravity, ProviderKimi, ProviderZhipu, ProviderDeepseek, ProviderMinimax, ProviderOpencodeGo:
 		return nil
 	default:
 		return fmt.Errorf("channelmonitor: invalid enum value for provider field: %q", pr)

backend/ent/channelmonitorrequesttemplate/channelmonitorrequesttemplate.go

@@ -109,6 +109,7 @@ const (
 	ProviderZhipu       Provider = "zhipu"
 	ProviderDeepseek    Provider = "deepseek"
 	ProviderMinimax     Provider = "minimax"
+	ProviderOpencodeGo  Provider = "opencode_go"
 )
 
 func (pr Provider) String() string {
@@ -118,7 +119,7 @@ func (pr Provider) String() string {
 // ProviderValidator is a validator for the "provider" field enum values. It is called by the builders before save.
 func ProviderValidator(pr Provider) error {
 	switch pr {
-	case ProviderOpenai, ProviderAnthropic, ProviderGemini, ProviderGrok, ProviderAntigravity, ProviderKimi, ProviderZhipu, ProviderDeepseek, ProviderMinimax:
+	case ProviderOpenai, ProviderAnthropic, ProviderGemini, ProviderGrok, ProviderAntigravity, ProviderKimi, ProviderZhipu, ProviderDeepseek, ProviderMinimax, ProviderOpencodeGo:
 		return nil
 	default:
 		return fmt.Errorf("channelmonitorrequesttemplate: invalid enum value for provider field: %q", pr)

backend/ent/migrate/schema.go

@@ -623,7 +623,7 @@ var (
 		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "updated_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "name", Type: field.TypeString, Size: 100},
-		{Name: "provider", Type: field.TypeEnum, Enums: []string{"openai", "anthropic", "gemini", "grok", "antigravity", "kimi", "zhipu", "deepseek", "minimax"}},
+		{Name: "provider", Type: field.TypeEnum, Enums: []string{"openai", "anthropic", "gemini", "grok", "antigravity", "kimi", "zhipu", "deepseek", "minimax", "opencode_go"}},
 		{Name: "check_mode", Type: field.TypeString, Size: 32, Default: "probe"},
 		{Name: "account_id", Type: field.TypeInt64, Nullable: true},
 		{Name: "api_mode", Type: field.TypeString, Size: 32, Default: "chat_completions"},
@@ -776,7 +776,7 @@ var (
 		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "updated_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "name", Type: field.TypeString, Size: 100},
-		{Name: "provider", Type: field.TypeEnum, Enums: []string{"openai", "anthropic", "gemini", "grok", "antigravity", "kimi", "zhipu", "deepseek", "minimax"}},
+		{Name: "provider", Type: field.TypeEnum, Enums: []string{"openai", "anthropic", "gemini", "grok", "antigravity", "kimi", "zhipu", "deepseek", "minimax", "opencode_go"}},
 		{Name: "api_mode", Type: field.TypeString, Size: 32, Default: "chat_completions"},
 		{Name: "description", Type: field.TypeString, Nullable: true, Size: 500, Default: ""},
 		{Name: "extra_headers", Type: field.TypeJSON},

backend/ent/schema/channel_monitor.go

@@ -36,7 +36,7 @@ func (ChannelMonitor) Fields() []ent.Field {
 			MaxLen(100),
 		field.Enum("provider").
 			Values("openai", "anthropic", "gemini", "grok",
-				"antigravity", "kimi", "zhipu", "deepseek", "minimax"),
+				"antigravity", "kimi", "zhipu", "deepseek", "minimax", "opencode_go"),
 		// check_mode: 'probe' | 'quota' | 'quota_probe'
 		//   probe       - LLM 探活（默认，原有行为）
 		//   quota       - 仅查关联账号的用量/余额（零 LLM 成本；endpoint/api_key 可空）

backend/ent/schema/channel_monitor_request_template.go

@@ -40,7 +40,7 @@ func (ChannelMonitorRequestTemplate) Fields() []ent.Field {
 			MaxLen(100),
 		field.Enum("provider").
 			Values("openai", "anthropic", "gemini", "grok",
-				"antigravity", "kimi", "zhipu", "deepseek", "minimax"),
+				"antigravity", "kimi", "zhipu", "deepseek", "minimax", "opencode_go"),
 		field.String("api_mode").
 			Default("chat_completions").
 			MaxLen(32).

backend/ent/schema/user_platform_quota.go

@@ -42,7 +42,7 @@ func (UserPlatformQuota) Fields() []ent.Field {
 				// 此处为 ent 构建期约束，需与 service.AllowedQuotaPlatforms 保持同步。
 				switch s {
 				case "anthropic", "openai", "gemini", "antigravity", "grok",
-					"kimi", "zhipu", "deepseek", "minimax":
+					"kimi", "zhipu", "deepseek", "minimax", "opencode_go":
 					return nil
 				default:
 					return fmt.Errorf("platform %q is not allowed", s)

backend/internal/config/config.go

@@ -2048,6 +2048,7 @@ func setDefaults() {
 		"open.bigmodel.cn",
 		"api.minimaxi.com", // MiniMax CN quota + inference
 		"api.minimax.io",   // MiniMax intl; frozen allowlists must add this host to use the intl site
+		"opencode.ai",
 		"generativelanguage.googleapis.com",
 		"cloudcode-pa.googleapis.com",
 		"*.openai.azure.com",

backend/internal/domain/channel_monitor_quota.go

@@ -19,7 +19,8 @@ import "time"
 //   - "7d"         7 天窗口（Claude/Codex）
 //   - "7d-sonnet"  Claude 7 天 Sonnet 独立额度
 //   - "7d-fable"   Claude 7 天 Fable 独立额度
-//   - "weekly"     周窗口（Kimi/Zhipu coding plan）
+//   - "weekly"     周窗口（Kimi/Zhipu coding plan / OpenCode Go）
+//   - "monthly"    月窗口（OpenCode Go）
 //   - "daily"      日窗口（Gemini 日配额 / Grok 日请求）
 //   - "30d"        30 天窗口（Grok 月度）
 //   - "total"      无窗口语义的总量额度（Antigravity per-model 等）

backend/internal/domain/constants.go

@@ -24,11 +24,14 @@ const (
 	PlatformAntigravity = "antigravity"
 	PlatformGrok        = "grok"
 	// 国产 OpenAI 兼容供应商（经 OpenAI 网关转发，按 Chat Completions 协议）。
-	PlatformKimi      = "kimi"     // Kimi (月之暗面 / Moonshot)
-	PlatformZhipu     = "zhipu"    // 智谱 GLM (bigmodel)
-	PlatformDeepseek  = "deepseek" // DeepSeek
-	PlatformMiniMax   = "minimax"  // MiniMax (M 系列)
-	PlatformComposite = "composite"
+	PlatformKimi     = "kimi"     // Kimi (月之暗面 / Moonshot)
+	PlatformZhipu    = "zhipu"    // 智谱 GLM (bigmodel)
+	PlatformDeepseek = "deepseek" // DeepSeek
+	PlatformMiniMax  = "minimax"  // MiniMax (M 系列)
+	// PlatformOpenCodeGo 是 OpenCode 平台（账号类型 Zen 按量 / Go 订阅）。
+	// 值保持 opencode_go 以兼容已落库的分组、配额与 Composite 路由 CHECK。
+	PlatformOpenCodeGo = "opencode_go"
+	PlatformComposite  = "composite"
 )
 
 // Account mode constants 区分国产供应商的「按量付费（余额）」与「Coding Plan」两种接入方式。
@@ -36,6 +39,8 @@ const (
 const (
 	AccountModePayG   = "payg"   // 按量付费：消耗余额，做余额检测冷却
 	AccountModeCoding = "coding" // Coding Plan：滚动用量窗口冷却（5h / weekly）
+	AccountModeZen    = "zen"    // OpenCode Zen：按量付费，https://opencode.ai/zen/v1
+	AccountModeGo     = "go"     // OpenCode Go：订阅额度窗口，https://opencode.ai/zen/go/v1
 )
 
 // API protocol constants 国产供应商的上游 API 协议维度。存储于

backend/internal/handler/admin/channel_handler.go

@@ -644,6 +644,7 @@ var platformToLiteLLMProvider = map[string]string{
 	service.PlatformZhipu:       "zhipu",
 	service.PlatformDeepseek:    "deepseek",
 	service.PlatformMiniMax:     "minimax",
+	service.PlatformOpenCodeGo:  "opencode-go",
 }
 
 // SyncPricingModels 返回 LiteLLM 定价目录中指定平台的最新模型列表

backend/internal/handler/admin/channel_monitor_handler.go

@@ -40,7 +40,7 @@ func NewChannelMonitorHandler(monitorService *service.ChannelMonitorService) *Ch
 
 type channelMonitorCreateRequest struct {
 	Name             string            `json:"name" binding:"required,max=100"`
-	Provider         string            `json:"provider" binding:"required,oneof=openai anthropic gemini grok antigravity kimi zhipu deepseek minimax"`
+	Provider         string            `json:"provider" binding:"required,oneof=openai anthropic gemini grok antigravity kimi zhipu deepseek minimax opencode_go"`
 	APIMode          string            `json:"api_mode" binding:"omitempty,oneof=chat_completions responses"`
 	Endpoint         string            `json:"endpoint" binding:"omitempty,max=500"`
 	APIKey           string            `json:"api_key" binding:"omitempty,max=2000"`
@@ -64,7 +64,7 @@ type channelMonitorCreateRequest struct {
 
 type channelMonitorUpdateRequest struct {
 	Name             *string            `json:"name" binding:"omitempty,max=100"`
-	Provider         *string            `json:"provider" binding:"omitempty,oneof=openai anthropic gemini grok antigravity kimi zhipu deepseek minimax"`
+	Provider         *string            `json:"provider" binding:"omitempty,oneof=openai anthropic gemini grok antigravity kimi zhipu deepseek minimax opencode_go"`
 	APIMode          *string            `json:"api_mode" binding:"omitempty,oneof=chat_completions responses"`
 	Endpoint         *string            `json:"endpoint" binding:"omitempty,max=500"`
 	APIKey           *string            `json:"api_key" binding:"omitempty,max=2000"`

backend/internal/handler/admin/group_handler.go

@@ -184,7 +184,7 @@ func sanitizeUpdateGroupRequestForSimpleMode(req *UpdateGroupRequest) {
 type CreateGroupRequest struct {
 	Name                      string                        `json:"name" binding:"required"`
 	Description               string                        `json:"description"`
-	Platform                  string                        `json:"platform" binding:"omitempty,oneof=anthropic openai gemini antigravity grok kimi zhipu deepseek minimax composite"`
+	Platform                  string                        `json:"platform" binding:"omitempty,oneof=anthropic openai gemini antigravity grok kimi zhipu deepseek minimax opencode_go composite"`
 	RateMultiplier            float64                       `json:"rate_multiplier"`
 	IsExclusive               bool                          `json:"is_exclusive"`
 	SubscriptionType          string                        `json:"subscription_type" binding:"omitempty,oneof=standard subscription"`
@@ -258,7 +258,7 @@ type CreateGroupRequest struct {
 type UpdateGroupRequest struct {
 	Name                      string                         `json:"name"`
 	Description               *string                        `json:"description"`
-	Platform                  string                         `json:"platform" binding:"omitempty,oneof=anthropic openai gemini antigravity grok kimi zhipu deepseek minimax composite"`
+	Platform                  string                         `json:"platform" binding:"omitempty,oneof=anthropic openai gemini antigravity grok kimi zhipu deepseek minimax opencode_go composite"`
 	RateMultiplier            *float64                       `json:"rate_multiplier"`
 	IsExclusive               *bool                          `json:"is_exclusive"`
 	Status                    string                         `json:"status" binding:"omitempty,oneof=active inactive"`
@@ -332,7 +332,7 @@ type UpdateGroupRequest struct {
 type CompositeRouteRequest struct {
 	PublicModel    string `json:"public_model" binding:"required"`
 	MatchType      string `json:"match_type" binding:"omitempty,oneof=exact prefix"`
-	TargetPlatform string `json:"target_platform" binding:"required,oneof=anthropic openai gemini antigravity grok kimi zhipu deepseek minimax"`
+	TargetPlatform string `json:"target_platform" binding:"required,oneof=anthropic openai gemini antigravity grok kimi zhipu deepseek minimax opencode_go"`
 	UpstreamModel  string `json:"upstream_model"`
 	Endpoint       string `json:"endpoint" binding:"omitempty,oneof=any messages count_tokens responses chat_completions embeddings images gemini"`
 	Priority       int    `json:"priority"`

backend/internal/handler/admin/group_handler_platform_test.go

@@ -12,9 +12,9 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-// 回归分组平台枚举:kimi/zhipu/deepseek 必须能通过 Create/Update 的 binding 校验
-// （历史 bug:调度/路由链路已支持 CN 平台分组,但 oneof 白名单漏加三平台,导致
-// 平台分组无法创建、CN 账号"无可用分组"）;非法值仍须被拒。
+// 回归分组平台枚举:kimi/zhipu/deepseek/opencode_go 必须能通过 Create/Update 的
+// binding 校验（历史 bug:调度/路由链路已支持这些平台,但 oneof 白名单漏加,
+// 导致平台分组无法创建、账号"无可用分组"）;非法值仍须被拒。
 func bindGroupPlatformJSON(t *testing.T, target any, body string) error {
 	t.Helper()
 	gin.SetMode(gin.TestMode)
@@ -27,7 +27,7 @@ func bindGroupPlatformJSON(t *testing.T, target any, body string) error {
 func TestGroupPlatformBinding_AllowedPlatforms(t *testing.T) {
 	allowed := []string{
 		"anthropic", "openai", "gemini", "antigravity", "grok",
-		"kimi", "zhipu", "deepseek", "minimax", "composite",
+		"kimi", "zhipu", "deepseek", "minimax", "opencode_go", "composite",
 	}
 	for _, platform := range allowed {
 		t.Run("create_"+platform, func(t *testing.T) {
@@ -72,10 +72,15 @@ func TestGroupPlatformBinding_RejectsInvalidPlatforms(t *testing.T) {
 }
 
 func TestCompositeRouteTargetPlatform_AllowsCNProviders(t *testing.T) {
-	for _, platform := range []string{"kimi", "zhipu", "deepseek", "minimax"} {
+	for _, platform := range []string{"kimi", "zhipu", "deepseek", "minimax", "opencode_go"} {
 		var req CompositeRouteRequest
 		body := fmt.Sprintf(`{"public_model":"m","target_platform":%q}`, platform)
 		require.NoError(t, bindGroupPlatformJSON(t, &req, body))
 		require.Equal(t, platform, req.TargetPlatform)
 	}
 }
+
+func TestCompositeRouteTargetPlatform_RejectsComposite(t *testing.T) {
+	var req CompositeRouteRequest
+	require.Error(t, bindGroupPlatformJSON(t, &req, `{"public_model":"m","target_platform":"composite"}`))
+}

backend/internal/handler/endpoint.go

@@ -315,7 +315,7 @@ func GetUpstreamEndpoint(c *gin.Context, platform string) string {
 	// OpenAI 转发服务维护独立的运行时端点上下文，覆盖普通入站推导。
 	// 这对 force_chat_completions 的错误路径尤为重要：此时可能没有
 	// ForwardResult，不能把入站 /v1/responses 误报成上游端点。
-	if platform == service.PlatformOpenAI || platform == service.PlatformGrok || service.IsCNProvider(platform) {
+	if platform == service.PlatformOpenAI || platform == service.PlatformGrok || service.IsMultiProtocolAPIKeyProvider(platform) {
 		if endpoint := service.GetActualOpenAIUpstreamEndpoint(c); endpoint != "" {
 			return endpoint
 		}

backend/internal/handler/endpoint_test.go

@@ -233,6 +233,18 @@ func TestResolveOpenAIUpstreamEndpointPrefersForwardResult(t *testing.T) {
 			result:  &service.OpenAIForwardResult{},
 			want:    EndpointResponses,
 		},
+		{
+			name:    "opencode go conversion result reports responses",
+			account: &service.Account{Platform: service.PlatformOpenCodeGo, Type: service.AccountTypeAPIKey},
+			result:  &service.OpenAIForwardResult{UpstreamEndpoint: EndpointResponses},
+			want:    EndpointResponses,
+		},
+		{
+			name:    "opencode go empty result without runtime stays inbound",
+			account: &service.Account{Platform: service.PlatformOpenCodeGo, Type: service.AccountTypeAPIKey},
+			result:  &service.OpenAIForwardResult{},
+			want:    EndpointChatCompletions,
+		},
 	}
 
 	for _, tt := range tests {

backend/internal/handler/gateway_handler.go

@@ -1269,12 +1269,12 @@ func (h *GatewayHandler) compositeAvailableModels(ctx context.Context, groupID *
 	seen := make(map[string]struct{})
 	models := make([]string, 0)
 	schedulablePlatforms := h.gatewayService.GetSchedulablePlatforms(ctx, groupID)
-	for _, platform := range []string{service.PlatformAnthropic, service.PlatformGemini, service.PlatformOpenAI, service.PlatformAntigravity, service.PlatformGrok, service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax} {
+	for _, platform := range []string{service.PlatformAnthropic, service.PlatformGemini, service.PlatformOpenAI, service.PlatformAntigravity, service.PlatformGrok, service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax, service.PlatformOpenCodeGo} {
 		platformModels := h.gatewayService.GetAvailableModels(ctx, groupID, platform)
 		if len(platformModels) == 0 {
 			// CN 供应商没有静态默认模型列表（defaultModelIDsForPlatform 的
 			// default 分支是 Claude 列表），composite 下只暴露账号映射键。
-			if _, ok := schedulablePlatforms[platform]; ok && !service.IsCNProvider(platform) {
+			if _, ok := schedulablePlatforms[platform]; ok && !service.IsMultiProtocolAPIKeyProvider(platform) {
 				platformModels = defaultModelIDsForPlatform(platform)
 			}
 		}
@@ -1451,10 +1451,12 @@ func defaultModelIDsForPlatform(platform string) []string {
 		return claude.DefaultModelIDs()
 	case service.PlatformGrok:
 		return xai.DefaultModelIDs()
+	case service.PlatformOpenCodeGo:
+		return service.DefaultOpenCodeGoModelIDs()
 	case service.PlatformComposite:
 		ids := make([]string, 0)
 		seen := make(map[string]struct{})
-		for _, concretePlatform := range []string{service.PlatformAnthropic, service.PlatformGemini, service.PlatformOpenAI, service.PlatformAntigravity, service.PlatformGrok, service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax} {
+		for _, concretePlatform := range []string{service.PlatformAnthropic, service.PlatformGemini, service.PlatformOpenAI, service.PlatformAntigravity, service.PlatformGrok, service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax, service.PlatformOpenCodeGo} {
 			for _, id := range defaultModelIDsForPlatform(concretePlatform) {
 				if _, ok := seen[id]; ok {
 					continue

backend/internal/handler/openai_gateway_cn_dispatch_test.go

@@ -18,7 +18,7 @@ import (
 func TestAllowOpenAICompatibleMessagesDispatch_CNProvidersExempt(t *testing.T) {
 	require.True(t, allowOpenAICompatibleMessagesDispatch(nil, nil), "无 key 保持放行")
 
-	for _, platform := range []string{service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax, service.PlatformGrok} {
+	for _, platform := range []string{service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax, service.PlatformOpenCodeGo, service.PlatformGrok} {
 		apiKey := &service.APIKey{Group: &service.Group{Platform: platform, AllowMessagesDispatch: false}}
 		require.True(t, allowOpenAICompatibleMessagesDispatch(nil, apiKey),
 			"%s 分组必须豁免 allow_messages_dispatch 闸门", platform)

backend/internal/handler/openai_gateway_handler.go

@@ -305,14 +305,14 @@ func allowOpenAICompatibleMessagesDispatch(c *gin.Context, apiKey *service.APIKe
 	// 协议账号原生直通 Claude Code),无需 allow_messages_dispatch 开关授权——
 	// 该开关对非 openai/composite 平台恒被 sanitizeGroupMessagesDispatchFields 置 false,
 	// 若不豁免,CN 分组将永远 403。
-	if service.IsCNProvider(apiKey.Group.Platform) {
+	if service.IsMultiProtocolAPIKeyProvider(apiKey.Group.Platform) {
 		return true
 	}
-	// composite 分组解析到 grok/CN 目标时与对应独立分组同语义豁免；
+	// composite 分组解析到 grok/CN/OpenCode Go 目标时与对应独立分组同语义豁免；
 	// 解析到 openai 目标则受 composite 分组自身的可配置开关控制。
 	if apiKey.Group.Platform == service.PlatformComposite && c != nil && c.Request != nil {
 		if platform, ok := service.ResolvedTargetPlatformFromContext(c.Request.Context()); ok &&
-			(platform == service.PlatformGrok || service.IsCNProvider(platform)) {
+			(platform == service.PlatformGrok || service.IsMultiProtocolAPIKeyProvider(platform)) {
 			return true
 		}
 	}
@@ -322,7 +322,8 @@ func allowOpenAICompatibleMessagesDispatch(c *gin.Context, apiKey *service.APIKe
 func openAICompatibleTextTargetAllowed(c *gin.Context, apiKey *service.APIKey, model string) bool {
 	return compositeTargetPlatformAllowed(c, apiKey, model,
 		service.PlatformOpenAI, service.PlatformGrok,
-		service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax)
+		service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek,
+		service.PlatformMiniMax, service.PlatformOpenCodeGo)
 }
 
 // isResponsesWebSocketCompositePlatform 限定 composite 分组在 Responses WebSocket

backend/internal/model/error_passthrough_rule.go

@@ -45,6 +45,7 @@ const (
 	PlatformZhipu       = domain.PlatformZhipu
 	PlatformDeepseek    = domain.PlatformDeepseek
 	PlatformMiniMax     = domain.PlatformMiniMax
+	PlatformOpenCodeGo  = domain.PlatformOpenCodeGo
 )
 
 // AllPlatforms 返回所有支持的平台列表
@@ -59,6 +60,7 @@ func AllPlatforms() []string {
 		PlatformZhipu,
 		PlatformDeepseek,
 		PlatformMiniMax,
+		PlatformOpenCodeGo,
 	}
 }
 

backend/internal/model/error_passthrough_rule_test.go

@@ -17,5 +17,6 @@ func TestAllPlatformsIncludesEveryConcretePlatform(t *testing.T) {
 		"zhipu",
 		"deepseek",
 		"minimax",
+		"opencode_go",
 	}, AllPlatforms())
 }

backend/internal/server/api_contract_test.go

@@ -863,7 +863,7 @@ func TestAPIContracts(t *testing.T) {
 					"force_email_on_third_party_signup": false,
 					"default_concurrency": 5,
 					"default_balance": 1.25,
-					"default_platform_quotas": {"anthropic":{"daily":null,"weekly":null,"monthly":null},"antigravity":{"daily":null,"weekly":null,"monthly":null},"deepseek":{"daily":null,"weekly":null,"monthly":null},"gemini":{"daily":null,"weekly":null,"monthly":null},"grok":{"daily":null,"weekly":null,"monthly":null},"kimi":{"daily":null,"weekly":null,"monthly":null},"minimax":{"daily":null,"weekly":null,"monthly":null},"openai":{"daily":null,"weekly":null,"monthly":null},"zhipu":{"daily":null,"weekly":null,"monthly":null}},
+					"default_platform_quotas": {"anthropic":{"daily":null,"weekly":null,"monthly":null},"antigravity":{"daily":null,"weekly":null,"monthly":null},"deepseek":{"daily":null,"weekly":null,"monthly":null},"gemini":{"daily":null,"weekly":null,"monthly":null},"grok":{"daily":null,"weekly":null,"monthly":null},"kimi":{"daily":null,"weekly":null,"monthly":null},"minimax":{"daily":null,"weekly":null,"monthly":null},"openai":{"daily":null,"weekly":null,"monthly":null},"opencode_go":{"daily":null,"weekly":null,"monthly":null},"zhipu":{"daily":null,"weekly":null,"monthly":null}},
 					"auth_source_default_email_platform_quotas": null,
 					"auth_source_default_github_platform_quotas": null,
 					"auth_source_default_google_platform_quotas": null,
@@ -1181,7 +1181,7 @@ func TestAPIContracts(t *testing.T) {
 					"purchase_subscription_url": "",
 					"table_default_page_size": 20,
 					"table_page_size_options": [10, 20, 50],
-					"default_platform_quotas": {"anthropic":{"daily":null,"weekly":null,"monthly":null},"antigravity":{"daily":null,"weekly":null,"monthly":null},"deepseek":{"daily":null,"weekly":null,"monthly":null},"gemini":{"daily":null,"weekly":null,"monthly":null},"grok":{"daily":null,"weekly":null,"monthly":null},"kimi":{"daily":null,"weekly":null,"monthly":null},"minimax":{"daily":null,"weekly":null,"monthly":null},"openai":{"daily":null,"weekly":null,"monthly":null},"zhipu":{"daily":null,"weekly":null,"monthly":null}},
+					"default_platform_quotas": {"anthropic":{"daily":null,"weekly":null,"monthly":null},"antigravity":{"daily":null,"weekly":null,"monthly":null},"deepseek":{"daily":null,"weekly":null,"monthly":null},"gemini":{"daily":null,"weekly":null,"monthly":null},"grok":{"daily":null,"weekly":null,"monthly":null},"kimi":{"daily":null,"weekly":null,"monthly":null},"minimax":{"daily":null,"weekly":null,"monthly":null},"openai":{"daily":null,"weekly":null,"monthly":null},"opencode_go":{"daily":null,"weekly":null,"monthly":null},"zhipu":{"daily":null,"weekly":null,"monthly":null}},
 					"auth_source_default_email_platform_quotas": null,
 					"auth_source_default_github_platform_quotas": null,
 					"auth_source_default_google_platform_quotas": null,

backend/internal/server/routes/gateway.go

@@ -48,7 +48,8 @@ func RegisterGatewayRoutes(
 	isOpenAIResponsesCompatibleGatewayPlatform := func(c *gin.Context) bool {
 		switch getGroupPlatform(c) {
 		case service.PlatformOpenAI, service.PlatformGrok,
-			service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax:
+			service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek,
+			service.PlatformMiniMax, service.PlatformOpenCodeGo:
 			// 国产 OpenAI 兼容供应商与 openai/grok 一样经 OpenAI 网关转发。
 			return true
 		default:
@@ -57,7 +58,7 @@ func RegisterGatewayRoutes(
 	}
 	countTokensHandler := func(c *gin.Context) {
 		switch getGroupPlatform(c) {
-		case service.PlatformOpenAI, service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax:
+		case service.PlatformOpenAI, service.PlatformKimi, service.PlatformZhipu, service.PlatformDeepseek, service.PlatformMiniMax, service.PlatformOpenCodeGo:
 			h.OpenAIGateway.CountTokens(c)
 		case service.PlatformGrok:
 			h.OpenAIGateway.GrokCountTokens(c)

backend/internal/service/account.go

@@ -296,9 +296,9 @@ func (a *Account) IsCNProvider() bool {
 
 // IsOpenAICompatible 报告账号是否走 OpenAI 网关（OpenAI 协议族）。
 // openai/grok 原生走 OpenAI 网关；国产供应商同为 OpenAI Chat Completions
-// 兼容上游，也经 OpenAI 网关转发。
+// 兼容上游，也经 OpenAI 网关转发。OpenCode 同样经 OpenAI 网关按模型分流。
 func (a *Account) IsOpenAICompatible() bool {
-	return a != nil && (a.Platform == PlatformOpenAI || a.Platform == PlatformGrok || a.IsCNProvider())
+	return a != nil && (a.Platform == PlatformOpenAI || a.Platform == PlatformGrok || a.IsCNProvider() || a.IsOpenCodeGo())
 }
 
 func (a *Account) GeminiOAuthType() string {
@@ -1333,13 +1333,13 @@ func (a *Account) IsOpenAIApiKey() bool {
 }
 
 // GetOpenAIBaseURL 解析 OpenAI 协议族账号的上游 base_url。
-// 适用 openai 与国产 OpenAI 兼容供应商（kimi/zhipu/deepseek）；grok 走 GetGrokBaseURL，
-// 此处对 grok 返回 "" 以保持原有行为。
+// 适用 openai、国产 OpenAI 兼容供应商（kimi/zhipu/deepseek）与 OpenCode Go；
+// grok 走 GetGrokBaseURL，此处对 grok 返回 "" 以保持原有行为。
 func (a *Account) GetOpenAIBaseURL() string {
-	if !a.IsOpenAI() && !a.IsCNProvider() {
+	if !a.IsOpenAI() && !a.IsCNProvider() && !a.IsOpenCodeGo() {
 		return ""
 	}
-	if a.IsCNProvider() && a.IsAdaptiveAPIProtocol() {
+	if a.IsMultiProtocolAPIKey() && a.IsAdaptiveAPIProtocol() {
 		if baseURLs, ok := a.Credentials["api_base_urls"].(map[string]any); ok {
 			if baseURL, ok := baseURLs[APIProtocolChatCompletions].(string); ok && strings.TrimSpace(baseURL) != "" {
 				return strings.TrimSpace(baseURL)
@@ -1367,6 +1367,8 @@ func (a *Account) GetOpenAIBaseURL() string {
 		return DefaultDeepseekBaseURL
 	case PlatformMiniMax:
 		return DefaultMiniMaxBaseURL
+	case PlatformOpenCodeGo:
+		return a.openCodeDefaultChatBaseURL()
 	default:
 		return "https://api.openai.com"
 	}
@@ -1395,7 +1397,7 @@ func (a *Account) IsCodingPlan() bool {
 // （与既有行为完全一致）。responses 协议仅 deepseek / kimi / minimax 支持（官方原生
 // Responses 端点，适配 Codex）；zhipu 无此端点。
 func (a *Account) GetAPIProtocol() string {
-	if a == nil || !a.IsCNProvider() {
+	if a == nil || !a.IsMultiProtocolAPIKey() {
 		return APIProtocolChatCompletions
 	}
 	switch strings.TrimSpace(a.GetCredential("api_protocol")) {
@@ -1410,6 +1412,9 @@ func (a *Account) GetAPIProtocol() string {
 	case APIProtocolChatCompletions:
 		return APIProtocolChatCompletions
 	}
+	if a.IsOpenCodeGo() {
+		return APIProtocolAdaptive
+	}
 	return APIProtocolChatCompletions
 }
 
@@ -1421,7 +1426,7 @@ func (a *Account) SupportsNativeCNResponses() bool {
 		return false
 	}
 	switch a.Platform {
-	case PlatformDeepseek, PlatformKimi, PlatformMiniMax:
+	case PlatformDeepseek, PlatformKimi, PlatformMiniMax, PlatformOpenCodeGo:
 		return true
 	default:
 		return false
@@ -1451,7 +1456,7 @@ func (a *Account) IsAdaptiveAPIProtocol() bool {
 // adaptive 账号优先使用 api_base_urls 中的分协议地址，缺失时按平台和
 // account_mode 使用官方默认端点。base_url 继续作为 Chat Completions 地址兼容旧字段。
 func (a *Account) GetCNProtocolBaseURL(protocol string) string {
-	if a == nil || !a.IsCNProvider() {
+	if a == nil || !a.IsMultiProtocolAPIKey() {
 		return ""
 	}
 	if a.IsAdaptiveAPIProtocol() {
@@ -1484,6 +1489,8 @@ func (a *Account) defaultCNProtocolBaseURL(protocol string) string {
 			return DefaultDeepseekAnthropicBaseURL
 		case PlatformMiniMax:
 			return DefaultMiniMaxAnthropicBaseURL
+		case PlatformOpenCodeGo:
+			return a.openCodeDefaultAnthropicBaseURL()
 		}
 	case APIProtocolChatCompletions, APIProtocolResponses:
 		switch a.Platform {
@@ -1501,6 +1508,8 @@ func (a *Account) defaultCNProtocolBaseURL(protocol string) string {
 			return DefaultDeepseekBaseURL
 		case PlatformMiniMax:
 			return DefaultMiniMaxBaseURL
+		case PlatformOpenCodeGo:
+			return a.openCodeDefaultChatBaseURL()
 		}
 	}
 	return ""
@@ -1539,6 +1548,8 @@ func (a *Account) GetAnthropicProtocolBaseURL() string {
 		return DefaultDeepseekAnthropicBaseURL
 	case PlatformMiniMax:
 		return DefaultMiniMaxAnthropicBaseURL
+	case PlatformOpenCodeGo:
+		return a.openCodeDefaultAnthropicBaseURL()
 	default:
 		return ""
 	}
@@ -1568,6 +1579,8 @@ func (a *Account) GetOpenAIFormatBaseURL() string {
 		return DefaultDeepseekBaseURL
 	case PlatformMiniMax:
 		return DefaultMiniMaxBaseURL
+	case PlatformOpenCodeGo:
+		return a.openCodeDefaultChatBaseURL()
 	default:
 		return a.GetOpenAIBaseURL()
 	}
@@ -1576,7 +1589,7 @@ func (a *Account) GetOpenAIFormatBaseURL() string {
 // GetCNAPIKey 返回国产 OpenAI 兼容供应商账号的 api_key 凭据（kimi/zhipu/deepseek）。
 // 与 openai 的 GetOpenAIApiKey 区分：后者仅对 openai 平台返回。
 func (a *Account) GetCNAPIKey() string {
-	if a == nil || !a.IsCNProvider() {
+	if a == nil || !a.IsMultiProtocolAPIKey() {
 		return ""
 	}
 	return a.GetCredential("api_key")
@@ -1586,7 +1599,13 @@ func (a *Account) GetCNAPIKey() string {
 // 用于路由到对应的额度查询端点。非 coding 模式或无法识别时返回空串。
 // 只认官方域名：自定义中转不得把第三方 Key 发往厂商官方额度端点。
 func (a *Account) GetCodingPlanProvider() string {
-	if a == nil || a.GetAccountMode() != AccountModeCoding {
+	if a == nil {
+		return ""
+	}
+	if a.IsOpenCodeGoPlan() {
+		return PlatformOpenCodeGo
+	}
+	if a.GetAccountMode() != AccountModeCoding {
 		return ""
 	}
 	baseURL := strings.ToLower(a.GetOpenAIBaseURL())
@@ -1715,14 +1734,15 @@ func (a *Account) GetOpenAIApiKey() string {
 }
 
 // GetOpenAIProtocolAPIKey 返回 OpenAI 协议族 APIKey 账号的密钥。
-// 覆盖 openai 原生账号与国产 OpenAI 兼容供应商（kimi/zhipu/deepseek）账号，
-// 供转发鉴权、模型列表同步等协议族共用路径使用。注意 IsOpenAIApiKey 语义上
-// 仅指 openai 平台账号，调度倍率/WS 能力门控继续以其为准，不受本方法影响。
+// 覆盖 openai 原生账号、国产 OpenAI 兼容供应商（kimi/zhipu/deepseek）
+// 以及 OpenCode Go 账号，供转发鉴权、模型列表同步等协议族共用路径使用。
+// 注意 IsOpenAIApiKey 语义上仅指 openai 平台账号，调度倍率/WS 能力门控
+// 继续以其为准，不受本方法影响。
 func (a *Account) GetOpenAIProtocolAPIKey() string {
 	if a == nil {
 		return ""
 	}
-	if a.IsCNProvider() {
+	if a.IsMultiProtocolAPIKey() {
 		if a.Type != AccountTypeAPIKey {
 			return ""
 		}

backend/internal/service/account_header_override.go

@@ -78,7 +78,7 @@ func (a *Account) IsHeaderOverrideEligible() bool {
 		return false
 	}
 	switch a.Platform {
-	case PlatformAnthropic, PlatformOpenAI, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
+	case PlatformAnthropic, PlatformOpenAI, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo:
 		return a.Type == AccountTypeAPIKey
 	case PlatformGrok:
 		return a.Type == AccountTypeAPIKey || a.Type == AccountTypeOAuth

backend/internal/service/account_header_override_test.go

@@ -30,11 +30,13 @@ func TestIsHeaderOverrideEligible(t *testing.T) {
 		{"kimi apikey", PlatformKimi, AccountTypeAPIKey, true},
 		{"zhipu apikey", PlatformZhipu, AccountTypeAPIKey, true},
 		{"deepseek apikey", PlatformDeepseek, AccountTypeAPIKey, true},
+		{"opencode go apikey", PlatformOpenCodeGo, AccountTypeAPIKey, true},
 		{"anthropic oauth", PlatformAnthropic, AccountTypeOAuth, false},
 		{"openai oauth", PlatformOpenAI, AccountTypeOAuth, false},
 		{"kimi oauth", PlatformKimi, AccountTypeOAuth, false},
 		{"zhipu oauth", PlatformZhipu, AccountTypeOAuth, false},
 		{"deepseek oauth", PlatformDeepseek, AccountTypeOAuth, false},
+		{"opencode go oauth", PlatformOpenCodeGo, AccountTypeOAuth, false},
 		{"gemini apikey", PlatformGemini, AccountTypeAPIKey, false},
 		{"grok apikey", PlatformGrok, AccountTypeAPIKey, true},
 		{"grok oauth", PlatformGrok, AccountTypeOAuth, true},

backend/internal/service/account_scheduling_threshold_eval.go

@@ -58,7 +58,7 @@ func EvaluateAccountSchedulingThreshold(account *Account, thresholds map[string]
 		winner = pickLatestResetSchedulingCandidate(anthropicThresholdCandidates(account), threshold, now)
 	case PlatformGrok:
 		winner = pickLatestResetSchedulingCandidate(grokThresholdCandidates(account), threshold, now)
-	case PlatformKimi, PlatformZhipu, PlatformMiniMax:
+	case PlatformKimi, PlatformZhipu, PlatformMiniMax, PlatformOpenCodeGo:
 		winner = pickLatestResetSchedulingCandidate(cnProviderThresholdCandidates(account, decision.Platform), threshold, now)
 	default:
 		return decision
@@ -356,10 +356,14 @@ func cnProviderThresholdCandidates(account *Account, provider string) []*account
 	if account == nil || len(account.Extra) == 0 {
 		return nil
 	}
-	return []*accountSchedulingThresholdCandidate{
+	candidates := []*accountSchedulingThresholdCandidate{
 		cnThresholdCandidate(account.Extra, provider, "5h"),
 		cnThresholdCandidate(account.Extra, provider, "weekly"),
 	}
+	if provider == PlatformOpenCodeGo {
+		candidates = append(candidates, cnThresholdCandidate(account.Extra, provider, "monthly"))
+	}
+	return candidates
 }
 
 func cnThresholdCandidate(extra map[string]any, provider, window string) *accountSchedulingThresholdCandidate {
@@ -371,6 +375,9 @@ func cnThresholdCandidate(extra map[string]any, provider, window string) *accoun
 	case "weekly":
 		usedKey = cnExtraKey(provider, cnExtraSuffixWeeklyUsed)
 		resetKey = cnExtraKey(provider, cnExtraSuffixWeeklyReset)
+	case "monthly":
+		usedKey = cnExtraKey(provider, cnExtraSuffixMonthlyUsed)
+		resetKey = cnExtraKey(provider, cnExtraSuffixMonthlyReset)
 	default:
 		return nil
 	}

backend/internal/service/account_service.go

@@ -515,8 +515,8 @@ func (s *AccountService) TestCredentials(ctx context.Context, id int64) error {
 	case PlatformGrok:
 		// Grok OAuth credentials are validated via token exchange/refresh and request-path probes.
 		return nil
-	case PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
-		// 国产 OpenAI 兼容供应商：凭证为 API Key，实际可用性经余额/额度探测与转发路径验证。
+	case PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo:
+		// 国产 OpenAI 兼容供应商与 OpenCode：凭证为 API Key，实际可用性经余额/额度探测与转发路径验证。
 		return nil
 	default:
 		return fmt.Errorf("unsupported platform: %s", account.Platform)

backend/internal/service/account_test_service.go

@@ -381,9 +381,55 @@ func (s *AccountTestService) TestAccountConnection(c *gin.Context, accountID int
 		return s.routeAntigravityTest(c, account, modelID, prompt)
 	}
 
+	if account.IsOpenCodeGo() {
+		return s.testOpenCodeGoAccountConnection(c, account, modelID, prompt)
+	}
+
 	return s.testClaudeAccountConnection(c, account, modelID)
 }
 
+// testOpenCodeGoAccountConnection probes the native endpoint for the selected
+// model. Adaptive accounts (the default) follow OpenCodeGoModelProtocol:
+// grok/gpt/muse-spark → Responses, minimax/qwen → Anthropic, everything else
+// (including deepseek-v4-flash) → Chat Completions. A pinned api_protocol
+// overrides that catalog. Falling through to the generic Claude tester used
+// credentials.base_url + /v1/messages?beta=true, which 404s as HTML on
+// https://opencode.ai/zen/go/v1/v1/messages.
+func (s *AccountTestService) testOpenCodeGoAccountConnection(c *gin.Context, account *Account, modelID string, prompt string) error {
+	testModelID := strings.TrimSpace(modelID)
+	if testModelID == "" {
+		testModelID = DefaultOpenCodeGoTestModel
+	}
+	proto := account.GetAPIProtocol()
+	switch proto {
+	case APIProtocolChatCompletions, APIProtocolAnthropic, APIProtocolResponses:
+	default:
+		proto = openCodeGoNativeProtocol(account, testModelID)
+	}
+	switch proto {
+	case APIProtocolAnthropic:
+		return s.testCNProviderAnthropicConnection(c, account, testModelID)
+	case APIProtocolResponses:
+		return s.testOpenCodeGoResponsesConnection(c, account, testModelID)
+	default:
+		return s.testCNProviderChatCompletionsConnection(c, account, testModelID, prompt)
+	}
+}
+
+func (s *AccountTestService) testOpenCodeGoResponsesConnection(c *gin.Context, account *Account, testModelID string) error {
+	authToken := strings.TrimSpace(account.GetOpenAIProtocolAPIKey())
+	if authToken == "" {
+		return s.sendErrorAndEnd(c, "No API key available")
+	}
+	c.Writer.Header().Set("Content-Type", "text/event-stream")
+	c.Writer.Header().Set("Cache-Control", "no-cache")
+	c.Writer.Header().Set("Connection", "keep-alive")
+	c.Writer.Header().Set("X-Accel-Buffering", "no")
+	c.Writer.Flush()
+	s.sendEvent(c, TestEvent{Type: "test_start", Model: testModelID})
+	return s.testCNProviderAdaptiveResponsesConnection(c, account, testModelID, authToken)
+}
+
 func (s *AccountTestService) testCNProviderChatCompletionsConnection(c *gin.Context, account *Account, modelID string, prompt string) error {
 	testModelID := strings.TrimSpace(modelID)
 	if testModelID == "" {
@@ -2054,6 +2100,7 @@ func (s *AccountTestService) testOpenAIChatCompletionsConnection(
 
 	// 账号级请求头覆写：测试请求与真实转发保持一致的最终头
 	account.ApplyHeaderOverrides(req.Header)
+	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
 	proxyURL := ""
 	if account.ProxyID != nil && account.Proxy != nil {

backend/internal/service/account_test_service_cn_adaptive.go

@@ -85,6 +85,7 @@ func (s *AccountTestService) testCNProviderAdaptiveAnthropicConnection(c *gin.Co
 	// base_url 强制 Bearer，其余保持 extra/default 行为。
 	setAnthropicAPIKeyAuthHeader(req.Header, account, authToken, account.GetCNProtocolBaseURL(APIProtocolAnthropic))
 	account.ApplyHeaderOverrides(req.Header)
+	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
 	resp, err := s.doCNProviderAdaptiveRequest(req, account)
 	if err != nil {
@@ -178,6 +179,7 @@ func (s *AccountTestService) testCNProviderAdaptiveResponsesConnection(c *gin.Co
 	req.Header.Set("Authorization", "Bearer "+authToken)
 	applyOpenAICodexProbeHeaders(req.Header)
 	account.ApplyHeaderOverrides(req.Header)
+	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
 	resp, err := s.doCNProviderAdaptiveRequest(req, account)
 	if err != nil {
@@ -266,6 +268,7 @@ func (s *AccountTestService) testCNProviderAnthropicConnection(c *gin.Context, a
 	// extra/default 行为。
 	setAnthropicAPIKeyAuthHeader(req.Header, account, authToken, account.GetAnthropicProtocolBaseURL())
 	account.ApplyHeaderOverrides(req.Header)
+	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
 	resp, err := s.doCNProviderAdaptiveRequest(req, account)
 	if err != nil {

backend/internal/service/account_test_service_opencode_go_test.go

@@ -0,0 +1,105 @@
+//go:build unit
+
+package service
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func openCodeGoTestAccount(id int64) *Account {
+	return &Account{
+		ID:          id,
+		Name:        "oc",
+		Platform:    PlatformOpenCodeGo,
+		Type:        AccountTypeAPIKey,
+		Status:      StatusActive,
+		Concurrency: 1,
+		Credentials: map[string]any{
+			"api_key":      "sk-opencode-go-test",
+			"api_protocol": APIProtocolAdaptive,
+			"base_url":     "https://opencode.ai/zen/go/v1",
+			"api_base_urls": map[string]any{
+				APIProtocolChatCompletions: "https://opencode.ai/zen/go/v1",
+				APIProtocolAnthropic:       "https://opencode.ai/zen/go",
+				APIProtocolResponses:       "https://opencode.ai/zen/go/v1",
+			},
+		},
+	}
+}
+
+func TestAccountTestService_OpenCodeGoDeepSeekFlashUsesChatCompletions(t *testing.T) {
+	account := openCodeGoTestAccount(401)
+	svc, upstream := adaptiveCNAccountTestService(account, adaptiveCNChatTestResponse())
+	c, recorder := newTestContext()
+
+	err := svc.TestAccountConnection(c, account.ID, "deepseek-v4-flash", "hi", AccountTestModeDefault)
+
+	require.NoError(t, err)
+	require.Len(t, upstream.requests, 1)
+	require.Equal(t, "https://opencode.ai/zen/go/v1/chat/completions", upstream.requests[0].URL.String())
+	require.Equal(t, "Bearer sk-opencode-go-test", upstream.requests[0].Header.Get("Authorization"))
+	require.NotEmpty(t, upstream.requests[0].Header.Get("X-OpenCode-Session"))
+	require.Contains(t, recorder.Body.String(), `"type":"test_complete"`)
+	require.NotContains(t, upstream.requests[0].URL.Path, "/messages")
+}
+
+func TestAccountTestService_OpenCodeGoGrokUsesResponses(t *testing.T) {
+	account := openCodeGoTestAccount(402)
+	svc, upstream := adaptiveCNAccountTestService(account, adaptiveCNResponsesTestResponse())
+	c, recorder := newTestContext()
+
+	err := svc.TestAccountConnection(c, account.ID, "grok-4.6", "hi", AccountTestModeDefault)
+
+	require.NoError(t, err)
+	require.Len(t, upstream.requests, 1)
+	require.Equal(t, "https://opencode.ai/zen/go/v1/responses", upstream.requests[0].URL.String())
+	require.Equal(t, "Bearer sk-opencode-go-test", upstream.requests[0].Header.Get("Authorization"))
+	require.NotEmpty(t, upstream.requests[0].Header.Get("X-OpenCode-Session"))
+	require.Contains(t, recorder.Body.String(), `"type":"test_complete"`)
+}
+
+func TestAccountTestService_OpenCodeGoMiniMaxUsesAnthropicMessages(t *testing.T) {
+	account := openCodeGoTestAccount(403)
+	svc, upstream := adaptiveCNAccountTestService(account, adaptiveCNAnthropicTestResponse())
+	c, recorder := newTestContext()
+
+	err := svc.TestAccountConnection(c, account.ID, "minimax-m3", "hi", AccountTestModeDefault)
+
+	require.NoError(t, err)
+	require.Len(t, upstream.requests, 1)
+	req := upstream.requests[0]
+	require.Equal(t, "https://opencode.ai/zen/go/v1/messages", req.URL.String())
+	require.Empty(t, req.URL.RawQuery)
+	require.Equal(t, "sk-opencode-go-test", req.Header.Get("x-api-key"))
+	require.NotEmpty(t, req.Header.Get("X-OpenCode-Session"))
+	require.Contains(t, recorder.Body.String(), `"type":"test_complete"`)
+}
+
+func TestAccountTestService_OpenCodeGoPinnedChatProtocolIgnoresCatalog(t *testing.T) {
+	account := openCodeGoTestAccount(404)
+	account.Credentials["api_protocol"] = APIProtocolChatCompletions
+	svc, upstream := adaptiveCNAccountTestService(account, adaptiveCNChatTestResponse())
+	c, _ := newTestContext()
+
+	err := svc.TestAccountConnection(c, account.ID, "grok-4.6", "hi", AccountTestModeDefault)
+
+	require.NoError(t, err)
+	require.Len(t, upstream.requests, 1)
+	require.Equal(t, "https://opencode.ai/zen/go/v1/chat/completions", upstream.requests[0].URL.String())
+}
+
+func TestAccountTestService_OpenCodeGoEmptyModelDefaultsToChatCatalogID(t *testing.T) {
+	account := openCodeGoTestAccount(405)
+	svc, upstream := adaptiveCNAccountTestService(account, adaptiveCNChatTestResponse())
+	c, recorder := newTestContext()
+
+	err := svc.TestAccountConnection(c, account.ID, "", "hi", AccountTestModeDefault)
+
+	require.NoError(t, err)
+	require.Len(t, upstream.requests, 1)
+	require.Equal(t, "https://opencode.ai/zen/go/v1/chat/completions", upstream.requests[0].URL.String())
+	require.True(t, strings.Contains(recorder.Body.String(), DefaultOpenCodeGoTestModel))
+}

backend/internal/service/admin_account.go

@@ -323,6 +323,9 @@ func (s *adminServiceImpl) DuplicateAccount(ctx context.Context, id int64, actor
 	if err := NormalizeHeaderOverrideCredentials(input.Credentials); err != nil {
 		return nil, err
 	}
+	if err := NormalizeOpenCodeGoProtocolRulesCredentials(input.Credentials); err != nil {
+		return nil, err
+	}
 	duplicate, err := buildAccountForCreate(input, accountExtra)
 	if err != nil {
 		return nil, err
@@ -514,6 +517,9 @@ func (s *adminServiceImpl) CreateAccount(ctx context.Context, input *CreateAccou
 	if err := NormalizeHeaderOverrideCredentials(input.Credentials); err != nil {
 		return nil, err
 	}
+	if err := NormalizeOpenCodeGoProtocolRulesCredentials(input.Credentials); err != nil {
+		return nil, err
+	}
 	// Never persist ephemeral SSO/password secrets after OAuth conversion.
 	input.Credentials = SanitizeStoredCredentials(input.Platform, input.Credentials)
 
@@ -640,6 +646,9 @@ func (s *adminServiceImpl) UpdateAccount(ctx context.Context, id int64, input *U
 		if err := NormalizeHeaderOverrideCredentials(account.Credentials); err != nil {
 			return nil, err
 		}
+		if err := NormalizeOpenCodeGoProtocolRulesCredentials(account.Credentials); err != nil {
+			return nil, err
+		}
 		// Strip SSO/password residue that must never sit next to OAuth tokens.
 		account.Credentials = SanitizeStoredCredentials(account.Platform, account.Credentials)
 	}
@@ -1065,6 +1074,9 @@ func (s *adminServiceImpl) BulkUpdateAccounts(ctx context.Context, input *BulkUp
 	if err := NormalizeHeaderOverrideCredentials(input.Credentials); err != nil {
 		return nil, err
 	}
+	if err := NormalizeOpenCodeGoProtocolRulesCredentials(input.Credentials); err != nil {
+		return nil, err
+	}
 	// Bulk may mix platforms; always drop ephemeral SSO/password keys (cookie
 	// only when platform is known Grok — empty platform still strips password/*).
 	if input.Credentials != nil {

backend/internal/service/admin_group.go

@@ -294,6 +294,8 @@ func defaultModelsListCandidateIDs(platform string) []string {
 		return ids
 	case PlatformGrok:
 		return xai.DefaultModelIDs()
+	case PlatformOpenCodeGo:
+		return DefaultOpenCodeGoModelIDs()
 	case PlatformComposite:
 		return compositeDefaultModelsListCandidateIDs()
 	default:
@@ -314,7 +316,7 @@ func defaultAllowImageGenerationForPlatform(platform string) bool {
 func compositeDefaultModelsListCandidateIDs() []string {
 	seen := make(map[string]struct{})
 	ids := make([]string, 0)
-	for _, platform := range []string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax} {
+	for _, platform := range []string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo} {
 		for _, id := range defaultModelsListCandidateIDs(platform) {
 			if _, ok := seen[id]; ok {
 				continue

backend/internal/service/channel_monitor_quota_fetcher.go

@@ -221,6 +221,8 @@ func (f *ChannelMonitorQuotaFetcher) fetchUncached(ctx context.Context, accountI
 			return f.fetchCNQuota(ctx, account, now)
 		}
 		return f.fetchCNBalance(ctx, account, now)
+	case domain.PlatformOpenCodeGo:
+		return f.fetchCNQuota(ctx, account, now)
 	default:
 		return f.fetchUsage(ctx, account, now)
 	}

backend/internal/service/channel_monitor_validate.go

@@ -215,6 +215,8 @@ func normalizeMonitorPrimaryModel(provider, checkMode, model string) string {
 //   - gemini/grok/antigravity：本地统计/值通道降级，不会永久 error，放行
 func monitorAccountQuotaCapability(account *Account) error {
 	switch account.Platform {
+	case PlatformOpenCodeGo:
+		return nil
 	case PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
 		if account.IsCodingPlan() {
 			if p := account.GetCodingPlanProvider(); p != PlatformKimi && p != PlatformZhipu && p != PlatformMiniMax {

backend/internal/service/channel_service.go

@@ -367,7 +367,7 @@ func isPlatformPricingMatch(groupPlatform, pricingPlatform string) bool {
 // fallback used before a request target has been resolved.
 func matchingPlatforms(groupPlatform string) []string {
 	if groupPlatform == PlatformComposite {
-		return []string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax}
+		return []string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo}
 	}
 	return []string{groupPlatform}
 }

backend/internal/service/channel_service_test.go

@@ -2127,7 +2127,7 @@ func TestMatchingPlatforms(t *testing.T) {
 		{"anthropic returns itself", PlatformAnthropic, []string{PlatformAnthropic}},
 		{"gemini returns itself", PlatformGemini, []string{PlatformGemini}},
 		{"openai returns itself", PlatformOpenAI, []string{PlatformOpenAI}},
-		{"composite returns concrete platforms", PlatformComposite, []string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax}},
+		{"composite returns concrete platforms", PlatformComposite, []string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo}},
 	}
 
 	for _, tt := range tests {

backend/internal/service/cn_provider_quota_service.go

@@ -35,6 +35,8 @@ const (
 	cnExtraSuffix5hReset      = "5h_reset_at"
 	cnExtraSuffixWeeklyUsed   = "weekly_used_percent"
 	cnExtraSuffixWeeklyReset  = "weekly_reset_at"
+	cnExtraSuffixMonthlyUsed  = "monthly_used_percent"
+	cnExtraSuffixMonthlyReset = "monthly_reset_at"
 	cnExtraSuffixUsageUpdated = "usage_updated_at"
 )
 
@@ -43,7 +45,7 @@ func cnExtraKey(provider, suffix string) string { return provider + "_" + suffix
 
 // CNQuotaTier 表示一个滚动用量窗口档位（5h / weekly）。
 type CNQuotaTier struct {
-	Window      string  `json:"window"`             // "5h" | "weekly"
+	Window      string  `json:"window"`             // "5h" | "weekly" | "monthly"
 	UsedPercent float64 `json:"used_percent"`       // 已用百分比（0-100+，不做裁剪）
 	ResetAt     string  `json:"reset_at,omitempty"` // RFC3339，空表示无重置时间
 }
@@ -129,8 +131,8 @@ func (s *CNProviderQuotaService) QueryUsageForAccount(ctx context.Context, accou
 
 func (s *CNProviderQuotaService) queryUsageForAccount(ctx context.Context, account *Account) (*CNProviderQuotaProbeResult, error) {
 	provider := account.GetCodingPlanProvider()
-	if provider != PlatformKimi && provider != PlatformZhipu && provider != PlatformMiniMax {
-		return nil, infraerrors.New(http.StatusBadRequest, "CN_QUOTA_NOT_CODING_PLAN", "account is not a kimi/zhipu/minimax coding plan account")
+	if provider != PlatformKimi && provider != PlatformZhipu && provider != PlatformMiniMax && provider != PlatformOpenCodeGo {
+		return nil, infraerrors.New(http.StatusBadRequest, "CN_QUOTA_NOT_CODING_PLAN", "account is not a kimi/zhipu/minimax coding plan or opencode go account")
 	}
 
 	apiKey := strings.TrimSpace(account.GetCNAPIKey())
@@ -148,6 +150,9 @@ func (s *CNProviderQuotaService) queryUsageForAccount(ctx context.Context, accou
 	case PlatformKimi:
 		targetURL = kimiQuotaURL(baseURL)
 		authHeader = "Bearer " + apiKey
+	case PlatformOpenCodeGo:
+		targetURL = openCodeGoQuotaURL(baseURL)
+		authHeader = "Bearer " + apiKey
 	case PlatformZhipu:
 		targetURL = zhipuQuotaURL(baseURL)
 		authHeader = apiKey // 智谱额度端点鉴权不加 Bearer 前缀
@@ -234,6 +239,9 @@ func (s *CNProviderQuotaService) queryUsageForAccount(ctx context.Context, accou
 	switch provider {
 	case PlatformKimi:
 		tiers = parseKimiUsageTiers(bodyBytes)
+	case PlatformOpenCodeGo:
+		tiers = parseOpenCodeGoUsageTiers(bodyBytes)
+		result.PlanLevel = "OpenCode Go"
 	case PlatformZhipu:
 		tiers = parseZhipuTokenTiers(gjson.GetBytes(bodyBytes, "data"))
 		result.PlanLevel = strings.TrimSpace(gjson.GetBytes(bodyBytes, "data.level").String())
@@ -279,6 +287,12 @@ func validateCodingPlanAccount(account *Account) error {
 	if account == nil {
 		return infraerrors.New(http.StatusNotFound, "CN_QUOTA_ACCOUNT_NOT_FOUND", "account not found")
 	}
+	if account.IsOpenCodeGoPlan() {
+		return nil
+	}
+	if account.IsOpenCodeGo() {
+		return infraerrors.New(http.StatusBadRequest, "CN_QUOTA_NOT_CODING_PLAN", "opencode zen accounts have no subscription quota window")
+	}
 	if !account.IsCNProvider() {
 		return infraerrors.New(http.StatusBadRequest, "CN_QUOTA_INVALID_PLATFORM", "account is not a CN provider account")
 	}
@@ -614,11 +628,61 @@ func cnQuotaExtraUpdates(provider string, tiers []CNQuotaTier, now time.Time) ma
 			if t.ResetAt != "" {
 				updates[cnExtraKey(provider, cnExtraSuffixWeeklyReset)] = t.ResetAt
 			}
+		case "monthly":
+			updates[cnExtraKey(provider, cnExtraSuffixMonthlyUsed)] = t.UsedPercent
+			if t.ResetAt != "" {
+				updates[cnExtraKey(provider, cnExtraSuffixMonthlyReset)] = t.ResetAt
+			}
 		}
 	}
 	return updates
 }
 
+// parseOpenCodeGoUsageTiers 解析 OpenCode Go GET /usage 响应。
+//
+// 结构对齐 cc-switch extractor：
+//
+//	{ "usage": { "rolling": {percent, resetsAt}, "weekly": {...}, "monthly": {...} } }
+//
+// percent 为已用百分比（0-100）；rolling 映射为 5h 窗口。
+func parseOpenCodeGoUsageTiers(body []byte) []CNQuotaTier {
+	usage := gjson.GetBytes(body, "usage")
+	if !usage.Exists() {
+		return nil
+	}
+	var tiers []CNQuotaTier
+	for _, item := range []struct {
+		key    string
+		window string
+	}{
+		{key: "rolling", window: "5h"},
+		{key: "weekly", window: "weekly"},
+		{key: "monthly", window: "monthly"},
+	} {
+		node := usage.Get(item.key)
+		if !node.Exists() {
+			continue
+		}
+		percentNode := node.Get("percent")
+		if !percentNode.Exists() {
+			continue
+		}
+		used, ok := cnParseF64(percentNode.Value())
+		if !ok {
+			continue
+		}
+		if used < 0 {
+			used = 0
+		}
+		tiers = append(tiers, CNQuotaTier{
+			Window:      item.window,
+			UsedPercent: used,
+			ResetAt:     cnNormalizeResetTime(node.Get("resetsAt").Value()),
+		})
+	}
+	return tiers
+}
+
 // cnParseF64 把 JSON 数值或字符串解析为 float64（兼容 "100" 与 100）。
 func cnParseF64(raw any) (float64, bool) {
 	switch v := raw.(type) {

backend/internal/service/cn_providers_test.go

@@ -177,6 +177,34 @@ func TestCNQuotaExtraUpdates(t *testing.T) {
 	require.Equal(t, now.Format(time.RFC3339), updates["kimi_usage_updated_at"])
 }
 
+func TestParseOpenCodeGoUsageTiers(t *testing.T) {
+	t.Parallel()
+	body := []byte(`{
+		"usage": {
+			"rolling": {"percent": 12.5, "resetsAt": "2026-09-07T12:00:00Z"},
+			"weekly": {"percent": 40, "resetsAt": "2026-09-10T00:00:00Z"},
+			"monthly": {"percent": 22.2, "resetsAt": "2026-10-01T00:00:00Z"}
+		}
+	}`)
+	tiers := parseOpenCodeGoUsageTiers(body)
+	require.Len(t, tiers, 3)
+	require.Equal(t, "5h", tiers[0].Window)
+	require.Equal(t, 12.5, tiers[0].UsedPercent)
+	require.Equal(t, "2026-09-07T12:00:00Z", tiers[0].ResetAt)
+	require.Equal(t, "weekly", tiers[1].Window)
+	require.Equal(t, 40.0, tiers[1].UsedPercent)
+	require.Equal(t, "monthly", tiers[2].Window)
+	require.InDelta(t, 22.2, tiers[2].UsedPercent, 0.001)
+
+	updates := cnQuotaExtraUpdates(PlatformOpenCodeGo, tiers, time.Date(2026, 9, 7, 0, 0, 0, 0, time.UTC))
+	require.Equal(t, 12.5, updates["opencode_go_5h_used_percent"])
+	require.Equal(t, 40.0, updates["opencode_go_weekly_used_percent"])
+	require.Equal(t, 22.2, updates["opencode_go_monthly_used_percent"])
+	require.Equal(t, "2026-10-01T00:00:00Z", updates["opencode_go_monthly_reset_at"])
+
+	require.Empty(t, parseOpenCodeGoUsageTiers([]byte(`{"ok":true}`)))
+}
+
 // TestCNProviderResponseIndicatesInsufficientBalance 覆盖中英文余额不足文案与否定用例。
 func TestCNProviderResponseIndicatesInsufficientBalance(t *testing.T) {
 	t.Parallel()
@@ -502,6 +530,7 @@ func TestNormalizeOpenAICompatiblePlatform_SchedulerExactMatch(t *testing.T) {
 	require.Equal(t, PlatformKimi, NormalizeOpenAICompatiblePlatform(PlatformKimi))
 	require.Equal(t, PlatformZhipu, NormalizeOpenAICompatiblePlatform(PlatformZhipu))
 	require.Equal(t, PlatformDeepseek, NormalizeOpenAICompatiblePlatform(PlatformDeepseek))
+	require.Equal(t, PlatformOpenCodeGo, NormalizeOpenAICompatiblePlatform(PlatformOpenCodeGo))
 	// 其他平台（含空、anthropic、未知）一律归一为 openai。
 	require.Equal(t, PlatformOpenAI, NormalizeOpenAICompatiblePlatform(""))
 	require.Equal(t, PlatformOpenAI, NormalizeOpenAICompatiblePlatform(PlatformAnthropic))
@@ -536,6 +565,14 @@ func TestGetOpenAIProtocolAPIKey_CNProviders(t *testing.T) {
 		Credentials: map[string]any{"api_key": "sk-openai"},
 	}
 	require.Equal(t, "sk-openai", openai.GetOpenAIProtocolAPIKey())
+
+	openCodeGo := &Account{
+		Platform:    PlatformOpenCodeGo,
+		Type:        AccountTypeAPIKey,
+		Credentials: map[string]any{"api_key": "sk-opencode-go"},
+	}
+	require.Equal(t, "sk-opencode-go", openCodeGo.GetOpenAIProtocolAPIKey())
+	require.False(t, openCodeGo.IsOpenAIApiKey())
 }
 
 // TestBuildUpstreamModelsRequest_CNProviders 验证“同步上游支持的模型”对国产供应商可用：
@@ -557,6 +594,8 @@ func TestBuildUpstreamModelsRequest_CNProviders(t *testing.T) {
 		{"deepseek", PlatformDeepseek, "", "https://api.deepseek.com/v1/models"},
 		{"minimax default", PlatformMiniMax, "", "https://api.minimaxi.com/v1/models"},
 		{"minimax coding", PlatformMiniMax, AccountModeCoding, "https://api.minimaxi.com/v1/models"},
+		{"opencode go", PlatformOpenCodeGo, AccountModeGo, "https://opencode.ai/zen/go/v1/models"},
+		{"opencode zen", PlatformOpenCodeGo, AccountModeZen, "https://opencode.ai/zen/v1/models"},
 	}
 	for _, tc := range cases {
 		t.Run(tc.name, func(t *testing.T) {
@@ -601,6 +640,8 @@ func TestGetAPIProtocol(t *testing.T) {
 	require.Equal(t, APIProtocolChatCompletions, mk(PlatformZhipu, APIProtocolResponses).GetAPIProtocol(), "zhipu 无 responses 端点")
 	require.Equal(t, APIProtocolChatCompletions, mk(PlatformKimi, "bogus").GetAPIProtocol(), "非法值回退默认")
 	require.Equal(t, APIProtocolChatCompletions, (&Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey}).GetAPIProtocol(), "非 CN 供应商恒为默认")
+	require.Equal(t, APIProtocolAdaptive, mk(PlatformOpenCodeGo, "").GetAPIProtocol(), "opencode go 默认 adaptive")
+	require.Equal(t, APIProtocolResponses, mk(PlatformOpenCodeGo, APIProtocolResponses).GetAPIProtocol())
 }
 
 func TestSupportsNativeCNResponses(t *testing.T) {
@@ -609,6 +650,7 @@ func TestSupportsNativeCNResponses(t *testing.T) {
 	require.True(t, (&Account{Platform: PlatformKimi}).SupportsNativeCNResponses())
 	require.True(t, (&Account{Platform: PlatformKimi, Credentials: map[string]any{"account_mode": AccountModeCoding}}).SupportsNativeCNResponses())
 	require.True(t, (&Account{Platform: PlatformMiniMax}).SupportsNativeCNResponses())
+	require.True(t, (&Account{Platform: PlatformOpenCodeGo}).SupportsNativeCNResponses())
 	require.False(t, (&Account{Platform: PlatformZhipu}).SupportsNativeCNResponses())
 	require.False(t, (&Account{Platform: PlatformOpenAI}).SupportsNativeCNResponses())
 }
@@ -631,6 +673,8 @@ func TestAdaptiveProtocolBaseURLs(t *testing.T) {
 		{"deepseek", PlatformDeepseek, AccountModePayG, DefaultDeepseekBaseURL, DefaultDeepseekAnthropicBaseURL, DefaultDeepseekBaseURL},
 		{"minimax payg", PlatformMiniMax, AccountModePayG, DefaultMiniMaxBaseURL, DefaultMiniMaxAnthropicBaseURL, DefaultMiniMaxBaseURL},
 		{"minimax coding", PlatformMiniMax, AccountModeCoding, DefaultMiniMaxBaseURL, DefaultMiniMaxAnthropicBaseURL, DefaultMiniMaxBaseURL},
+		{"opencode go", PlatformOpenCodeGo, AccountModeGo, DefaultOpenCodeGoBaseURL, DefaultOpenCodeGoAnthropicBaseURL, DefaultOpenCodeGoBaseURL},
+		{"opencode zen", PlatformOpenCodeGo, AccountModeZen, DefaultOpenCodeZenBaseURL, DefaultOpenCodeZenAnthropicBaseURL, DefaultOpenCodeZenBaseURL},
 	}
 
 	for _, tc := range cases {

backend/internal/service/composite_platform.go

@@ -202,7 +202,7 @@ func (s *GatewayService) resolveCompositeRouteDecision(ctx context.Context, grou
 func isConcreteRequestPlatform(platform string) bool {
 	switch platform {
 	case PlatformAnthropic, PlatformOpenAI, PlatformGemini, PlatformAntigravity, PlatformGrok,
-		PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
+		PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo:
 		return true
 	default:
 		return false

backend/internal/service/composite_platform_test.go

@@ -216,13 +216,13 @@ func TestCompositeGroupSchedulerHasAllCanonicalPlatformBuckets(t *testing.T) {
 		platforms = append(platforms, platform)
 	}
 	require.ElementsMatch(t,
-		[]string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax},
+		[]string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo},
 		platforms,
 	)
 }
 
 func TestCompositeConcretePlatformsIncludeCNProviders(t *testing.T) {
-	for _, platform := range []string{PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax} {
+	for _, platform := range []string{PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo} {
 		require.True(t, isConcreteRequestPlatform(platform))
 		require.True(t, canCopyAccountsFromGroupPlatform(PlatformComposite, platform))
 	}

backend/internal/service/domain_constants.go

@@ -44,11 +44,12 @@ const (
 	PlatformAntigravity = domain.PlatformAntigravity
 	PlatformGrok        = domain.PlatformGrok
 	// 国产 OpenAI 兼容供应商（与 grok 一样经 OpenAI 网关转发）。
-	PlatformKimi      = domain.PlatformKimi
-	PlatformZhipu     = domain.PlatformZhipu
-	PlatformDeepseek  = domain.PlatformDeepseek
-	PlatformMiniMax   = domain.PlatformMiniMax
-	PlatformComposite = domain.PlatformComposite
+	PlatformKimi       = domain.PlatformKimi
+	PlatformZhipu      = domain.PlatformZhipu
+	PlatformDeepseek   = domain.PlatformDeepseek
+	PlatformMiniMax    = domain.PlatformMiniMax
+	PlatformOpenCodeGo = domain.PlatformOpenCodeGo
+	PlatformComposite  = domain.PlatformComposite
 	// PlatformKiro is retained for unsupported-platform threshold tests and legacy
 	// account rows. Scheduling-threshold evaluation never pauses kiro accounts.
 	PlatformKiro = "kiro"
@@ -58,6 +59,8 @@ const (
 const (
 	AccountModePayG   = domain.AccountModePayG
 	AccountModeCoding = domain.AccountModeCoding
+	AccountModeZen    = domain.AccountModeZen
+	AccountModeGo     = domain.AccountModeGo
 )
 
 // 上游 API 协议（国产供应商）：决定转发端点与格式，与接入模式正交。
@@ -78,6 +81,10 @@ const (
 	DefaultDeepseekBaseURL    = "https://api.deepseek.com"
 	// MiniMax 按量付费与 Coding/Token Plan 共用推理域名，靠 API Key 区分套餐。
 	DefaultMiniMaxBaseURL = "https://api.minimaxi.com/v1"
+	// OpenCode Go：Chat Completions / Responses / models 共用 /v1 基址。
+	DefaultOpenCodeGoBaseURL = "https://opencode.ai/zen/go/v1"
+	// OpenCode Zen：按量付费网关，模型列表为 /zen/v1/models。
+	DefaultOpenCodeZenBaseURL = "https://opencode.ai/zen/v1"
 )
 
 // 国产供应商 Anthropic 协议端点的默认 base_url（上游路径为 {base}/v1/messages）。
@@ -88,6 +95,9 @@ const (
 	DefaultZhipuAnthropicBaseURL      = "https://open.bigmodel.cn/api/anthropic"
 	DefaultDeepseekAnthropicBaseURL   = "https://api.deepseek.com/anthropic"
 	DefaultMiniMaxAnthropicBaseURL    = "https://api.minimaxi.com/anthropic"
+	// OpenCode Go Anthropic 基址不含 /v1：nativeAnthropicTargetURL 会再拼 /v1/messages。
+	DefaultOpenCodeGoAnthropicBaseURL  = "https://opencode.ai/zen/go"
+	DefaultOpenCodeZenAnthropicBaseURL = "https://opencode.ai/zen"
 )
 
 // IsCNProvider 报告 platform 是否为国产 OpenAI 兼容供应商（kimi/zhipu/deepseek/minimax）。
@@ -100,6 +110,17 @@ func IsCNProvider(platform string) bool {
 	}
 }
 
+// IsOpenCodeGo 报告 platform 是否为 OpenCode Go 订阅网关。
+func IsOpenCodeGo(platform string) bool {
+	return platform == PlatformOpenCodeGo
+}
+
+// IsMultiProtocolAPIKeyProvider 报告 platform 是否为多协议 API Key 网关
+// （国产供应商 + OpenCode）：走 OpenAI 网关、支持 adaptive 协议分流。
+func IsMultiProtocolAPIKeyProvider(platform string) bool {
+	return IsCNProvider(platform) || platform == PlatformOpenCodeGo
+}
+
 // AllowedQuotaPlatforms 是允许设置 user × platform quota 的平台列表（单一权威来源）。
 // ent/schema/user_platform_quota.go 的 Validate 函数独立维护（构建期约束），
 // 若新增平台需同步修改该 schema。
@@ -113,6 +134,7 @@ var AllowedQuotaPlatforms = []string{
 	PlatformZhipu,
 	PlatformDeepseek,
 	PlatformMiniMax,
+	PlatformOpenCodeGo,
 }
 
 // AllowedSchedulingThresholdPlatforms 是允许设置账号自动停调阈值的平台列表。
@@ -125,6 +147,7 @@ var AllowedSchedulingThresholdPlatforms = []string{
 	PlatformKimi,
 	PlatformZhipu,
 	PlatformMiniMax,
+	PlatformOpenCodeGo,
 }
 
 // IsAllowedQuotaPlatform 报告 s 是否为合法的 quota platform 标识。

backend/internal/service/openai_gateway_cc_pipeline.go

@@ -223,7 +223,7 @@ func (s *OpenAIGatewayService) sendCCUpstreamRequest(
 	// 账号级请求头覆写：放在所有内置默认头（含 Grok CLI 身份头）之后应用，
 	// 使配置值获得除共享传输层强制头之外的最高优先级。
 	account.ApplyHeaderOverrides(upstreamReq.Header)
-	applyOpenCodeSessionHeader(c, account, targetURL, upstreamReq.Header)
+	applyOpenCodeSessionHeader(c, account, targetURL, upstreamReq.Header, body)
 
 	proxyURL := ""
 	if account.ProxyID != nil && account.Proxy != nil {

backend/internal/service/openai_gateway_chat_completions.go

@@ -71,6 +71,7 @@ func (s *OpenAIGatewayService) forwardAsChatCompletions(
 	defaultMappedModel string,
 	compatPromptCacheTenantIsolated bool,
 ) (*OpenAIForwardResult, error) {
+	rememberOpenCodeInboundBody(c, body)
 	beginUpstreamResponseModelObservation(c)
 	ClearActualOpenAIUpstreamEndpoint(c)
 	if shouldForwardOpenAIResponsesViaRawChatCompletions(account) {
@@ -113,10 +114,43 @@ func (s *OpenAIGatewayService) forwardAsChatCompletions(
 	// accounts never forward the body unchanged to a Chat Completions endpoint.
 	isResponsesShape := !gjson.GetBytes(body, "messages").Exists() && gjson.GetBytes(body, "input").Exists()
 
+	// OpenCode Go：按模型原生协议分流（与 inbound 协议正交）。
+	// 规则未命中一律兜底 Chat Completions，只有显式 Responses 才走下方转换链。
+	if account.IsOpenCodeGo() {
+		proto := openCodeGoNativeProtocol(account, resolveOpenCodeGoMappedModel(account, body, defaultMappedModel))
+		if proto != APIProtocolResponses {
+			if isResponsesShape {
+				if proto == APIProtocolAnthropic {
+					return s.forwardResponsesViaNativeAnthropic(ctx, c, account, body, "")
+				}
+				var responsesReq apicompat.ResponsesRequest
+				if err := json.Unmarshal(body, &responsesReq); err != nil {
+					return nil, fmt.Errorf("parse responses-shaped chat completions request: %w", err)
+				}
+				chatReq, err := apicompat.ResponsesToChatCompletionsRequestWithOptions(
+					&responsesReq,
+					&apicompat.ResponsesToChatOptions{ReasoningContentByID: s.reasoningContentByID},
+				)
+				if err != nil {
+					return nil, fmt.Errorf("convert responses-shaped chat completions request: %w", err)
+				}
+				chatBody, err := json.Marshal(chatReq)
+				if err != nil {
+					return nil, fmt.Errorf("marshal converted chat completions request: %w", err)
+				}
+				return s.forwardAsRawChatCompletions(ctx, c, account, chatBody, defaultMappedModel)
+			}
+			if proto == APIProtocolAnthropic {
+				return s.forwardChatCompletionsViaNativeAnthropic(ctx, c, account, body, defaultMappedModel)
+			}
+			return s.forwardAsRawChatCompletions(ctx, c, account, body, defaultMappedModel)
+		}
+	}
+
 	// 自适应账号的标准 Chat Completions 入站使用供应商原生 CC 端点。
 	// Responses 形状下，DeepSeek / Kimi 继续走下方原生 Responses 链；GLM
 	// 没有 Responses 端点，先转换成 Chat Completions 再直转。
-	if account.IsAdaptiveAPIProtocol() {
+	if account.IsAdaptiveAPIProtocol() && !account.IsOpenCodeGo() {
 		if !isResponsesShape {
 			return s.forwardAsRawChatCompletions(ctx, c, account, body, defaultMappedModel)
 		}
@@ -154,6 +188,7 @@ func (s *OpenAIGatewayService) forwardAsChatCompletions(
 	if shouldForwardOpenAIResponsesViaRawChatCompletions(account) {
 		return s.forwardAsRawChatCompletions(ctx, c, account, body, defaultMappedModel)
 	}
+	SetActualOpenAIUpstreamEndpoint(c, openAIResponsesUpstreamEndpoint)
 
 	startTime := time.Now()
 
@@ -376,6 +411,7 @@ func (s *OpenAIGatewayService) forwardAsChatCompletions(
 			return s.forwardAsChatCompletions(markAgentIdentityTaskRecoveryTried(ctx), c, account, body, promptCacheKey, defaultMappedModel, compatPromptCacheTenantIsolated)
 		}
 		if account.Type == AccountTypeAPIKey &&
+			!account.IsOpenCodeGo() &&
 			openai_compat.ResolveResponsesSupport(account.Extra) == openai_compat.ResponsesSupportUnknown &&
 			!isResponsesEndpointSupportedByStatus(resp.StatusCode) {
 			logger.L().Info("openai chat_completions: /responses unsupported, falling back to raw chat completions",
@@ -399,6 +435,7 @@ func (s *OpenAIGatewayService) forwardAsChatCompletions(
 	} else {
 		result, handleErr = s.handleChatBufferedStreamingResponse(resp, c, account, originalModel, billingModel, upstreamModel, startTime)
 	}
+	stampOpenAIResponsesUpstreamEndpoint(c, result)
 
 	// cyber_policy：标记已设、error 已按 Chat Completions 格式发给客户端。丢弃 result、
 	// 返回哨兵，使 handler 落入 tokens=0 免费用量行（对齐 /v1/responses），不计费、不 failover。

backend/internal/service/openai_gateway_chat_completions_anthropic_native.go

@@ -111,7 +111,7 @@ func (s *OpenAIGatewayService) forwardChatCompletionsViaNativeAnthropic(
 	}
 
 	upstreamCtx, releaseUpstreamCtx := detachStreamUpstreamContext(ctx, reqStream)
-	upstreamReq, _, err := s.buildNativeAnthropicUpstreamRequest(upstreamCtx, c, account, anthropicBody, apiKey, targetURL)
+	upstreamReq, _, err := s.buildNativeAnthropicUpstreamRequest(upstreamCtx, c, account, anthropicBody, apiKey, targetURL, body)
 	releaseUpstreamCtx()
 	if err != nil {
 		return nil, fmt.Errorf("build upstream request: %w", err)

backend/internal/service/openai_gateway_forward.go

@@ -146,6 +146,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 	}
 
 	originalBody := body
+	rememberOpenCodeInboundBody(c, originalBody)
 	requestView := newOpenAIRequestView(body)
 	reqModel, reqStream, promptCacheKey := requestView.Model, requestView.Stream, requestView.PromptCacheKey
 	originalModel := reqModel
@@ -154,6 +155,18 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 		return s.forwardGrokResponses(ctx, c, account, body, originalModel, reqStream, startTime)
 	}
 
+	if account.IsOpenCodeGo() {
+		mapped := normalizeOpenAIModelForUpstream(account, resolveOpenAIForwardModel(account, originalModel, ""))
+		switch openCodeGoNativeProtocol(account, mapped) {
+		case APIProtocolAnthropic:
+			return s.forwardResponsesViaNativeAnthropic(ctx, c, account, body, reqModel)
+		case APIProtocolResponses:
+			break
+		default:
+			return s.forwardResponsesViaRawChatCompletions(ctx, c, account, body)
+		}
+	}
+
 	// CN 供应商 anthropic 协议账号：/v1/responses 入站是交叉协议组合
 	// （Responses 客户端 × Anthropic 上游），转成 Anthropic 请求走原生端点。
 	// 不能落到下面的 raw-CC 分支——其 URL 构造会把 anthropic base 当 CC base 用。
@@ -181,6 +194,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 	if shouldForwardOpenAIResponsesViaRawChatCompletions(account) {
 		return s.forwardResponsesViaRawChatCompletions(ctx, c, account, body)
 	}
+	SetActualOpenAIUpstreamEndpoint(c, openAIResponsesUpstreamEndpoint)
 	if account.IsOpenAI() && (account.IsOpenAIApiKey() || account.IsOpenAIOAuthLike()) {
 		normalizedReasoningBody, reasoningChanged, reasoningErr := normalizeOpenAIResponsesReasoningContentReplay(body)
 		if reasoningErr != nil {
@@ -1317,6 +1331,7 @@ func (s *OpenAIGatewayService) Forward(ctx context.Context, c *gin.Context, acco
 		if searchCount > 0 && account != nil && account.IsGrok() {
 			forwardResult.SearchCount = searchCount
 		}
+		stampOpenAIResponsesUpstreamEndpoint(c, forwardResult)
 		return forwardResult, nil
 	}
 }
@@ -1325,6 +1340,11 @@ func shouldForwardOpenAIResponsesViaRawChatCompletions(account *Account) bool {
 	if account == nil || account.Type != AccountTypeAPIKey {
 		return false
 	}
+	if account.IsOpenCodeGo() {
+		// Model protocol_rules are the authority. Probe Extra must not collapse
+		// Grok/GPT/Muse into Chat Completions.
+		return false
+	}
 	if account.IsCNProvider() {
 		// CN 的显式协议配置优先于异步探针 Extra；adaptive 仅 DeepSeek / Kimi
 		// 有原生 Responses，GLM 回退 Chat Completions。
@@ -1485,7 +1505,7 @@ func (s *OpenAIGatewayService) buildUpstreamRequest(ctx context.Context, c *gin.
 
 	// 账号级请求头覆写（仅 openai api_key 账号启用时生效；OAuth 路径 no-op）
 	account.ApplyHeaderOverrides(req.Header)
-	applyOpenCodeSessionHeader(c, account, targetURL, req.Header)
+	applyOpenCodeSessionHeader(c, account, targetURL, req.Header, body, openCodeSessionHintBody(promptCacheKey))
 	// x-codex-beta-features：按真实 Codex 的会话级行为补注（在账号级覆写之后，
 	// 保证不被覆盖丢失）。
 	applyOpenAICodexBetaFeatures(c, account, req.Header)

backend/internal/service/openai_gateway_messages.go

@@ -33,6 +33,7 @@ func (s *OpenAIGatewayService) ForwardAsAnthropic(
 	promptCacheKey string,
 	defaultMappedModel string,
 ) (*OpenAIForwardResult, error) {
+	rememberOpenCodeInboundBody(c, body)
 	beginUpstreamResponseModelObservation(c)
 	ClearActualOpenAIUpstreamEndpoint(c)
 	if shouldForwardOpenAIResponsesViaRawChatCompletions(account) {
@@ -43,12 +44,22 @@ func (s *OpenAIGatewayService) ForwardAsAnthropic(
 		return nil, err
 	}
 
-	// 入口分流（国产供应商 Anthropic 协议）：上游为供应商原生 Anthropic 端点时，
-	// /v1/messages 请求零转换直通（仅模型名映射 + 少量 body 清洗），完整保留
-	// thinking / tool_use / cache 语义，适配 Claude Code 等原生客户端。
-	// 必须先于 ShouldUseResponsesAPI 分流：Anthropic 协议账号经 probe 落标
-	// openai_responses_supported=false，会先命中下方的 CC 直转分支。
-	if account.IsAnthropicProtocol() || account.IsAdaptiveAPIProtocol() {
+	// OpenCode Go：按模型原生协议分流。规则未命中兜底 Chat Completions。
+	if account.IsOpenCodeGo() {
+		switch openCodeGoNativeProtocol(account, resolveOpenCodeGoMappedModel(account, body, defaultMappedModel)) {
+		case APIProtocolAnthropic:
+			return s.forwardAnthropicViaNativeAnthropicEndpoint(ctx, c, account, body, defaultMappedModel)
+		case APIProtocolResponses:
+			break
+		default:
+			return s.forwardAnthropicViaRawChatCompletions(ctx, c, account, body, defaultMappedModel)
+		}
+	} else if account.IsAnthropicProtocol() || account.IsAdaptiveAPIProtocol() {
+		// 入口分流（国产供应商 Anthropic 协议）：上游为供应商原生 Anthropic 端点时，
+		// /v1/messages 请求零转换直通（仅模型名映射 + 少量 body 清洗），完整保留
+		// thinking / tool_use / cache 语义，适配 Claude Code 等原生客户端。
+		// 必须先于 ShouldUseResponsesAPI 分流：Anthropic 协议账号经 probe 落标
+		// openai_responses_supported=false，会先命中下方的 CC 直转分支。
 		return s.forwardAnthropicViaNativeAnthropicEndpoint(ctx, c, account, body, defaultMappedModel)
 	}
 
@@ -57,6 +68,7 @@ func (s *OpenAIGatewayService) ForwardAsAnthropic(
 	if shouldForwardOpenAIResponsesViaRawChatCompletions(account) {
 		return s.forwardAnthropicViaRawChatCompletions(ctx, c, account, body, defaultMappedModel)
 	}
+	SetActualOpenAIUpstreamEndpoint(c, openAIResponsesUpstreamEndpoint)
 
 	startTime := time.Now()
 
@@ -530,6 +542,7 @@ func (s *OpenAIGatewayService) ForwardAsAnthropic(
 		notifyOpenAIAutoReset(*account.ParentAccountID)
 	}
 
+	stampOpenAIResponsesUpstreamEndpoint(c, result)
 	return result, handleErr
 }
 

backend/internal/service/openai_gateway_messages_anthropic_native.go

@@ -133,9 +133,19 @@ func (s *OpenAIGatewayService) nativeAnthropicTargetURL(account *Account) (strin
 	if err != nil {
 		return "", fmt.Errorf("invalid base_url: %w", err)
 	}
+	if account.IsOpenCodeGo() {
+		// OpenCode Go 的 Chat Completions base 带 /v1；用版本感知拼接避免 /v1/v1/messages。
+		return buildOpenAIEndpointURL(validatedURL, "/v1/messages"), nil
+	}
 	return strings.TrimRight(validatedURL, "/") + "/v1/messages", nil
 }
 
+func resolveOpenCodeGoMappedModel(account *Account, body []byte, defaultMappedModel string) string {
+	original := strings.TrimSpace(gjson.GetBytes(body, "model").String())
+	billing := resolveOpenAIForwardModel(account, original, defaultMappedModel)
+	return normalizeOpenAIModelForUpstream(account, billing)
+}
+
 func (s *OpenAIGatewayService) buildNativeAnthropicUpstreamRequest(
 	ctx context.Context,
 	c *gin.Context,
@@ -143,6 +153,7 @@ func (s *OpenAIGatewayService) buildNativeAnthropicUpstreamRequest(
 	body []byte,
 	apiKey string,
 	targetURL string,
+	sessionBodies ...[]byte,
 ) (*http.Request, []byte, error) {
 	// 能力维度 body sanitize：与 Anthropic 平台 passthrough 相同，按 beta
 	// header 决定是否保留 body 中的 beta 能力字段，避免客户端"body 带字段但
@@ -199,6 +210,8 @@ func (s *OpenAIGatewayService) buildNativeAnthropicUpstreamRequest(
 
 	// 账号级请求头覆写（最终生效，覆盖上面所有来源的同名头）
 	account.ApplyHeaderOverrides(req.Header)
+	payloads := append([][]byte{body}, sessionBodies...)
+	applyOpenCodeSessionHeader(c, account, targetURL, req.Header, payloads...)
 
 	return req, body, nil
 }

backend/internal/service/openai_gateway_passthrough.go

@@ -721,7 +721,7 @@ func (s *OpenAIGatewayService) buildUpstreamRequestOpenAIPassthrough(
 
 	// 账号级请求头覆写（仅 openai api_key 账号启用时生效；OAuth 路径 no-op）
 	account.ApplyHeaderOverrides(req.Header)
-	applyOpenCodeSessionHeader(c, account, targetURL, req.Header)
+	applyOpenCodeSessionHeader(c, account, targetURL, req.Header, body)
 	// x-codex-beta-features：按真实 Codex 的会话级行为补注（在账号级覆写之后，
 	// 保证不被覆盖丢失）。
 	applyOpenAICodexBetaFeatures(c, account, req.Header)

backend/internal/service/openai_gateway_responses_anthropic_native.go

@@ -116,7 +116,7 @@ func (s *OpenAIGatewayService) forwardResponsesViaNativeAnthropic(
 	}
 
 	upstreamCtx, releaseUpstreamCtx := detachStreamUpstreamContext(ctx, reqStream)
-	upstreamReq, _, err := s.buildNativeAnthropicUpstreamRequest(upstreamCtx, c, account, anthropicBody, apiKey, targetURL)
+	upstreamReq, _, err := s.buildNativeAnthropicUpstreamRequest(upstreamCtx, c, account, anthropicBody, apiKey, targetURL, body)
 	releaseUpstreamCtx()
 	if err != nil {
 		return nil, fmt.Errorf("build upstream request: %w", err)

backend/internal/service/openai_gateway_scheduling.go

@@ -292,7 +292,7 @@ func (s *OpenAIGatewayService) SelectAccountForTokenCount(
 // handler 调度入口仍需导出，保持导出名。）
 func NormalizeOpenAICompatiblePlatform(platform string) string {
 	switch platform {
-	case PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
+	case PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo:
 		return platform
 	default:
 		return PlatformOpenAI

backend/internal/service/openai_gateway_service.go

@@ -314,6 +314,21 @@ func (r *OpenAIForwardResult) SucceededForScheduling() bool {
 	}
 }
 
+const openAIResponsesUpstreamEndpoint = "/v1/responses"
+
+// stampOpenAIResponsesUpstreamEndpoint records that this attempt hit the
+// Responses API. OpenCode Go / CN accounts cannot derive that from inbound
+// path (DeriveUpstreamEndpoint falls back to the client URL).
+func stampOpenAIResponsesUpstreamEndpoint(c *gin.Context, result *OpenAIForwardResult) {
+	SetActualOpenAIUpstreamEndpoint(c, openAIResponsesUpstreamEndpoint)
+	if result == nil {
+		return
+	}
+	if strings.TrimSpace(result.UpstreamEndpoint) == "" {
+		result.UpstreamEndpoint = openAIResponsesUpstreamEndpoint
+	}
+}
+
 // SetActualOpenAIUpstreamEndpoint records the endpoint selected by the current
 // forwarding attempt. It covers error paths where no OpenAIForwardResult is
 // available for usage and operations logging.

backend/internal/service/openai_opencode_session.go

@@ -3,28 +3,61 @@ package service
 import (
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 
 	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/tidwall/gjson"
 )
 
-const openCodeSessionHeader = "X-OpenCode-Session"
+const (
+	openCodeSessionHeader         = "X-OpenCode-Session"
+	openCodeInboundBodyContextKey = "opencode_inbound_body"
+)
 
-// applyOpenCodeSessionHeader forwards the caller-owned conversation identifier
-// only to OpenCode's official API origin. The caller applies this after account
-// header overrides so a per-conversation value cannot be replaced by a fixed
-// account-wide override.
-func applyOpenCodeSessionHeader(c *gin.Context, account *Account, targetURL string, headers http.Header) {
-	if c == nil || c.Request == nil || account == nil || account.Type != AccountTypeAPIKey || headers == nil {
+// rememberOpenCodeInboundBody keeps the client request body so protocol
+// conversion (Responses↔Anthropic↔Chat Completions) can still recover
+// prompt_cache_key / metadata.user_id after those fields are dropped.
+func rememberOpenCodeInboundBody(c *gin.Context, body []byte) {
+	if c == nil || len(body) == 0 {
+		return
+	}
+	c.Set(openCodeInboundBodyContextKey, body)
+}
+
+func openCodeInboundBodies(c *gin.Context) [][]byte {
+	if c == nil {
+		return nil
+	}
+	raw, ok := c.Get(openCodeInboundBodyContextKey)
+	if !ok {
+		return nil
+	}
+	body, ok := raw.([]byte)
+	if !ok || len(body) == 0 {
+		return nil
+	}
+	return [][]byte{body}
+}
+
+// applyOpenCodeSessionHeader sets x-opencode-session on outbound inference
+// requests. OpenCode Go requires a per-conversation value from 2026-09-05
+// (MissingSessionID). Prefer caller headers, then the documented body session
+// fields (OpenAI prompt_cache_key / Anthropic metadata.user_id), then any
+// already applied account override. A generated UUID is last-resort only for
+// probes and clients that omit every stable identifier — a new UUID each turn
+// would miss upstream prompt cache.
+func applyOpenCodeSessionHeader(c *gin.Context, account *Account, targetURL string, headers http.Header, bodies ...[]byte) {
+	if account == nil || account.Type != AccountTypeAPIKey || headers == nil {
+		return
+	}
+	if !shouldSendOpenCodeSessionHeader(account, targetURL) {
 		return
 	}
 
-	parsed, err := url.Parse(targetURL)
-	if err != nil || !strings.EqualFold(parsed.Scheme, "https") || !strings.EqualFold(parsed.Hostname(), "opencode.ai") {
-		return
-	}
-
-	sessionID := strings.TrimSpace(c.GetHeader(openCodeSessionHeader))
+	payloads := append(openCodeInboundBodies(c), bodies...)
+	sessionID := resolveOpenCodeSessionID(c, headers, shouldGenerateOpenCodeSession(account, targetURL), payloads...)
 	if sessionID == "" {
 		return
 	}
@@ -35,3 +68,105 @@ func applyOpenCodeSessionHeader(c *gin.Context, account *Account, targetURL stri
 	}
 	headers.Set(openCodeSessionHeader, sessionID)
 }
+
+func shouldSendOpenCodeSessionHeader(account *Account, targetURL string) bool {
+	if account != nil && account.IsOpenCodeGoPlan() {
+		return true
+	}
+	return isOfficialOpenCodeHost(targetURL)
+}
+
+func shouldGenerateOpenCodeSession(account *Account, targetURL string) bool {
+	if account != nil && account.IsOpenCodeGoPlan() {
+		return true
+	}
+	parsed, err := url.Parse(targetURL)
+	if err != nil {
+		return false
+	}
+	return strings.EqualFold(parsed.Scheme, "https") &&
+		strings.EqualFold(parsed.Hostname(), "opencode.ai") &&
+		strings.Contains(parsed.Path, "/zen/go")
+}
+
+func isOfficialOpenCodeHost(targetURL string) bool {
+	parsed, err := url.Parse(targetURL)
+	if err != nil {
+		return false
+	}
+	return strings.EqualFold(parsed.Scheme, "https") && strings.EqualFold(parsed.Hostname(), "opencode.ai")
+}
+
+func resolveOpenCodeSessionID(c *gin.Context, headers http.Header, generate bool, bodies ...[]byte) string {
+	if c != nil && c.Request != nil {
+		if sessionID := strings.TrimSpace(c.GetHeader(openCodeSessionHeader)); sessionID != "" {
+			return sessionID
+		}
+		if sessionID := explicitOpenAIHeaderSessionID(c); sessionID != "" {
+			return sessionID
+		}
+		if sessionID := ClaudeCodeSessionIDFromHeader(c); sessionID != "" {
+			return sessionID
+		}
+	}
+	for _, body := range bodies {
+		if sessionID := openCodeSessionIDFromPayload(body); sessionID != "" {
+			return sessionID
+		}
+	}
+	if sessionID := strings.TrimSpace(existingOpenCodeSessionHeader(headers)); sessionID != "" {
+		return sessionID
+	}
+	if generate {
+		return uuid.NewString()
+	}
+	return ""
+}
+
+// openCodeSessionIDFromPayload reads the stable conversation id from documented
+// request-body fields. Kimi Code / OpenAI clients send prompt_cache_key on
+// Chat Completions and Responses; Anthropic clients send metadata.user_id on
+// Messages. Neither field changes model behavior.
+func openCodeSessionIDFromPayload(body []byte) string {
+	if len(body) == 0 {
+		return ""
+	}
+	view := openAIRequestPayloadView(body)
+	if sessionID := strings.TrimSpace(view.Get("prompt_cache_key").String()); sessionID != "" {
+		return sessionID
+	}
+	return openCodeSessionIDFromMetadataUserID(view.Get("metadata.user_id").String())
+}
+
+func openCodeSessionIDFromMetadataUserID(userID string) string {
+	userID = strings.TrimSpace(userID)
+	if userID == "" {
+		return ""
+	}
+	if strings.HasPrefix(userID, "{") {
+		if sessionID := strings.TrimSpace(gjson.Get(userID, "session_id").String()); sessionID != "" {
+			return sessionID
+		}
+	}
+	return userID
+}
+
+func openCodeSessionHintBody(promptCacheKey string) []byte {
+	key := strings.TrimSpace(promptCacheKey)
+	if key == "" {
+		return nil
+	}
+	return []byte(`{"prompt_cache_key":` + strconv.Quote(key) + `}`)
+}
+
+func existingOpenCodeSessionHeader(headers http.Header) string {
+	if headers == nil {
+		return ""
+	}
+	for key, values := range headers {
+		if strings.EqualFold(key, openCodeSessionHeader) && len(values) > 0 {
+			return values[0]
+		}
+	}
+	return ""
+}

backend/internal/service/openai_opencode_session_test.go

@@ -92,7 +92,13 @@ func TestApplyOpenCodeSessionHeaderTrustBoundary(t *testing.T) {
 			incoming:  "conversation-123",
 		},
 		{
-			name:      "missing caller value",
+			name:      "missing caller value generates session on go endpoint",
+			account:   openCodeSessionTestAccount("https://opencode.ai/zen/go/v1"),
+			targetURL: "https://opencode.ai/zen/go/v1/responses",
+			want:      "<generated>",
+		},
+		{
+			name:      "zen endpoint does not invent a session",
 			account:   openCodeSessionTestAccount("https://opencode.ai/zen/v1"),
 			targetURL: "https://opencode.ai/zen/v1/responses",
 		},
@@ -108,11 +114,105 @@ func TestApplyOpenCodeSessionHeaderTrustBoundary(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			headers := make(http.Header)
 			applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, tt.incoming), tt.account, tt.targetURL, headers)
-			require.Equal(t, tt.want, headers.Get(openCodeSessionHeader))
+			got := headers.Get(openCodeSessionHeader)
+			if tt.want == "<generated>" {
+				require.NotEmpty(t, got)
+				return
+			}
+			require.Equal(t, tt.want, got)
 		})
 	}
 }
 
+func TestApplyOpenCodeSessionHeaderOpenCodeGoAlwaysSetsSession(t *testing.T) {
+	account := &Account{
+		ID:       4,
+		Platform: PlatformOpenCodeGo,
+		Type:     AccountTypeAPIKey,
+		Credentials: map[string]any{
+			"base_url": "https://relay.example.com/v1",
+		},
+	}
+	headers := make(http.Header)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, ""), account, "https://relay.example.com/v1/chat/completions", headers)
+	require.NotEmpty(t, headers.Get(openCodeSessionHeader))
+}
+
+func TestApplyOpenCodeSessionHeaderMapsCallerSessionID(t *testing.T) {
+	account := &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey}
+	c := newOpenCodeSessionTestContext(t, "")
+	c.Request.Header.Set("session_id", "conv-from-client")
+	headers := make(http.Header)
+	applyOpenCodeSessionHeader(c, account, "https://opencode.ai/zen/go/v1/chat/completions", headers)
+	require.Equal(t, "conv-from-client", headers.Get(openCodeSessionHeader))
+}
+
+func TestApplyOpenCodeSessionHeaderUsesPromptCacheKeyInsteadOfRandomUUID(t *testing.T) {
+	account := &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey}
+	body := []byte(`{"model":"grok-4.6","prompt_cache_key":"kimi-session-42","input":"hello"}`)
+	headers := make(http.Header)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, ""), account, "https://opencode.ai/zen/go/v1/responses", headers, body)
+	require.Equal(t, "kimi-session-42", headers.Get(openCodeSessionHeader))
+
+	headers2 := make(http.Header)
+	laterTurn := []byte(`{"model":"grok-4.6","prompt_cache_key":"kimi-session-42","input":"follow up"}`)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, ""), account, "https://opencode.ai/zen/go/v1/responses", headers2, laterTurn)
+	require.Equal(t, headers.Get(openCodeSessionHeader), headers2.Get(openCodeSessionHeader))
+}
+
+func TestApplyOpenCodeSessionHeaderUsesAnthropicMetadataUserID(t *testing.T) {
+	account := &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey}
+	body := []byte(`{"model":"minimax-m3","metadata":{"user_id":"coding-agent-session"},"messages":[{"role":"user","content":"hi"}]}`)
+	headers := make(http.Header)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, ""), account, "https://opencode.ai/zen/go/v1/messages", headers, body)
+	require.Equal(t, "coding-agent-session", headers.Get(openCodeSessionHeader))
+}
+
+func TestApplyOpenCodeSessionHeaderUnwrapsClaudeCodeMetadataSessionJSON(t *testing.T) {
+	account := &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey}
+	body := []byte(`{"model":"claude-sonnet-4","metadata":{"user_id":"{\"session_id\":\"meta-session-xyz\"}"},"messages":[]}`)
+	headers := make(http.Header)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, ""), account, "https://opencode.ai/zen/go/v1/messages", headers, body)
+	require.Equal(t, "meta-session-xyz", headers.Get(openCodeSessionHeader))
+}
+
+func TestApplyOpenCodeSessionHeaderBodyBeatsGeneratedUUIDAndLosesToCallerHeader(t *testing.T) {
+	account := &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey}
+	body := []byte(`{"prompt_cache_key":"from-body"}`)
+
+	headers := make(http.Header)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, "from-header"), account, "https://opencode.ai/zen/go/v1/responses", headers, body)
+	require.Equal(t, "from-header", headers.Get(openCodeSessionHeader))
+
+	converted := []byte(`{"model":"minimax-m3","messages":[]}`)
+	headers2 := make(http.Header)
+	applyOpenCodeSessionHeader(newOpenCodeSessionTestContext(t, ""), account, "https://opencode.ai/zen/go/v1/messages", headers2, converted, body)
+	require.Equal(t, "from-body", headers2.Get(openCodeSessionHeader))
+}
+
+func TestApplyOpenCodeSessionHeaderUsesRememberedInboundBodyAfterConversion(t *testing.T) {
+	account := &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey}
+
+	c := newOpenCodeSessionTestContext(t, "")
+	rememberOpenCodeInboundBody(c, []byte(`{"model":"gpt-5","prompt_cache_key":"inbound-responses-session","input":"hello"}`))
+	headers := make(http.Header)
+	convertedCC := []byte(`{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"hello"}]}`)
+	applyOpenCodeSessionHeader(c, account, "https://opencode.ai/zen/go/v1/chat/completions", headers, convertedCC)
+	require.Equal(t, "inbound-responses-session", headers.Get(openCodeSessionHeader))
+
+	c2 := newOpenCodeSessionTestContext(t, "")
+	rememberOpenCodeInboundBody(c2, []byte(`{"model":"grok-4.6","metadata":{"user_id":"inbound-messages-session"},"messages":[{"role":"user","content":"hi"}]}`))
+	headers2 := make(http.Header)
+	convertedResponses := []byte(`{"model":"grok-4.6","input":"hi"}`)
+	applyOpenCodeSessionHeader(c2, account, "https://opencode.ai/zen/go/v1/responses", headers2, convertedResponses)
+	require.Equal(t, "inbound-messages-session", headers2.Get(openCodeSessionHeader))
+}
+
+func TestOpenCodeSessionIDFromPayloadIgnoresEmptyBody(t *testing.T) {
+	require.Empty(t, openCodeSessionIDFromPayload(nil))
+	require.Empty(t, openCodeSessionIDFromPayload([]byte(`{"model":"gpt-5"}`)))
+}
+
 func TestOpenCodeSessionForwardedByResponsesBuildersAfterAccountOverride(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	svc := openCodeSessionTestService()
@@ -147,6 +247,24 @@ func TestOpenCodeSessionForwardedByResponsesBuildersAfterAccountOverride(t *test
 	}
 }
 
+func TestOpenCodeSessionForwardedFromPromptCacheKeyWithoutCallerHeader(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	svc := openCodeSessionTestService()
+	account := &Account{
+		ID:       1,
+		Platform: PlatformOpenCodeGo,
+		Type:     AccountTypeAPIKey,
+		Credentials: map[string]any{
+			"base_url": "https://opencode.ai/zen/go/v1",
+		},
+	}
+	c := newOpenCodeSessionTestContext(t, "")
+	body := []byte(`{"model":"gpt-5","prompt_cache_key":"stable-cache-key","input":"hello"}`)
+	req, err := svc.buildUpstreamRequest(context.Background(), c, account, body, "token", false, "", false)
+	require.NoError(t, err)
+	requireSingleOpenCodeSessionHeader(t, req.Header, "stable-cache-key")
+}
+
 func TestOpenCodeSessionMissingCallerValueKeepsExistingOverrideBehavior(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	svc := openCodeSessionTestService()

backend/internal/service/opencode_go.go

@@ -0,0 +1,330 @@
+package service
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
+)
+
+// OpenCode Go 是 OpenCode Zen 的订阅网关：同一 API Key 下按模型分流到
+// Responses / Chat Completions / Anthropic Messages 三种原生端点，
+// 额度窗口为 rolling(5h) / weekly / monthly。
+
+const (
+	openCodeGoUsagePath = "/usage"
+	// DefaultOpenCodeGoTestModel is the admin connection-test fallback when
+	// the UI does not pick a model. glm-5.3 is a Chat Completions catalog ID.
+	DefaultOpenCodeGoTestModel = "glm-5.3"
+
+	openCodeGoProtocolRulesKey         = "protocol_rules"
+	maxOpenCodeGoProtocolRules         = 64
+	maxOpenCodeGoProtocolPatternLength = 128
+)
+
+// DefaultOpenCodeGoModelIDs 是官方文档当前公开的模型 ID 目录，
+// 供 /v1/models 在尚未同步上游列表时回退，以及账号白名单预填。
+func DefaultOpenCodeGoModelIDs() []string {
+	return []string{
+		"grok-4.6",
+		"gpt-5.6-luna",
+		"glm-5.3-flash",
+		"glm-5.3",
+		"glm-5.2",
+		"glm-5.1",
+		"kimi-k3",
+		"kimi-k2.7-code",
+		"kimi-k2.6",
+		"longcat-2.0",
+		"deepseek-v4-pro",
+		"deepseek-v4-flash",
+		"deepseek-v4-flash-vision-exp",
+		"mimo-v2.5",
+		"mimo-v2.5-pro",
+		"minimax-m3",
+		"minimax-m2.7",
+		"minimax-m2.5",
+		"muse-spark-1.3-contributor",
+		"muse-spark-1.2-contributor",
+		"qwen3.8-max",
+		"qwen3.8-flash",
+		"qwen3.7-max",
+		"qwen3.7-plus",
+		"qwen3.6-plus",
+		"hy4-preview",
+		"hy3",
+		"omen-alpha",
+	}
+}
+
+func normalizeOpenCodeGoModelID(model string) string {
+	model = strings.ToLower(strings.TrimSpace(model))
+	for _, prefix := range []string{"opencode-go/", "opencode_go/", "opencode/"} {
+		model = strings.TrimPrefix(model, prefix)
+	}
+	return model
+}
+
+// OpenCodeGoProtocolRule is one model-pattern → native protocol mapping.
+// Pattern is an exact ID or a suffix glob (foo* / *). First match wins.
+type OpenCodeGoProtocolRule struct {
+	Pattern  string `json:"pattern"`
+	Protocol string `json:"protocol"`
+}
+
+// DefaultOpenCodeGoProtocolRules is the built-in adaptive routing table for Go.
+func DefaultOpenCodeGoProtocolRules() []OpenCodeGoProtocolRule {
+	return []OpenCodeGoProtocolRule{
+		{Pattern: "grok-*", Protocol: APIProtocolResponses},
+		{Pattern: "gpt-*", Protocol: APIProtocolResponses},
+		{Pattern: "muse-spark-*", Protocol: APIProtocolResponses},
+		{Pattern: "minimax-*", Protocol: APIProtocolAnthropic},
+		{Pattern: "qwen*", Protocol: APIProtocolAnthropic},
+	}
+}
+
+// DefaultOpenCodeZenProtocolRules 对齐 https://opencode.ai/docs/zen/ 端点表：
+// GPT/Grok/Muse Spark → Responses，Claude/Qwen → Anthropic，其余 Chat Completions。
+func DefaultOpenCodeZenProtocolRules() []OpenCodeGoProtocolRule {
+	return []OpenCodeGoProtocolRule{
+		{Pattern: "grok-*", Protocol: APIProtocolResponses},
+		{Pattern: "gpt-*", Protocol: APIProtocolResponses},
+		{Pattern: "muse-spark-*", Protocol: APIProtocolResponses},
+		{Pattern: "claude-*", Protocol: APIProtocolAnthropic},
+		{Pattern: "qwen*", Protocol: APIProtocolAnthropic},
+	}
+}
+
+func defaultOpenCodeProtocolRules(mode string) []OpenCodeGoProtocolRule {
+	if mode == AccountModeZen {
+		return DefaultOpenCodeZenProtocolRules()
+	}
+	return DefaultOpenCodeGoProtocolRules()
+}
+
+func isNativeOpenCodeGoProtocol(protocol string) bool {
+	switch protocol {
+	case APIProtocolChatCompletions, APIProtocolAnthropic, APIProtocolResponses:
+		return true
+	default:
+		return false
+	}
+}
+
+func openCodeGoPatternMatches(pattern, model string) bool {
+	pattern = strings.ToLower(strings.TrimSpace(pattern))
+	model = normalizeOpenCodeGoModelID(model)
+	if pattern == "" || model == "" {
+		return false
+	}
+	if pattern == "*" {
+		return true
+	}
+	if strings.HasSuffix(pattern, "*") {
+		return strings.HasPrefix(model, strings.TrimSuffix(pattern, "*"))
+	}
+	return model == pattern
+}
+
+func matchOpenCodeGoProtocolRules(model string, rules []OpenCodeGoProtocolRule) string {
+	for _, rule := range rules {
+		if !isNativeOpenCodeGoProtocol(rule.Protocol) {
+			continue
+		}
+		if openCodeGoPatternMatches(rule.Pattern, model) {
+			return rule.Protocol
+		}
+	}
+	return APIProtocolChatCompletions
+}
+
+// OpenCodeGoModelProtocol 返回内置默认表下模型对应的原生上游协议。
+// 未命中时为 Chat Completions。账号自定义 protocol_rules 见
+// ResolveOpenCodeGoUpstreamProtocol。
+func OpenCodeGoModelProtocol(model string) string {
+	return matchOpenCodeGoProtocolRules(model, DefaultOpenCodeGoProtocolRules())
+}
+
+func (a *Account) openCodeGoProtocolRules() ([]OpenCodeGoProtocolRule, bool) {
+	if a == nil || a.Credentials == nil {
+		return nil, false
+	}
+	raw, ok := a.Credentials[openCodeGoProtocolRulesKey]
+	if !ok || raw == nil {
+		return nil, false
+	}
+	rules, err := parseOpenCodeGoProtocolRules(raw)
+	if err != nil {
+		return nil, false
+	}
+	return rules, true
+}
+
+func parseOpenCodeGoProtocolRules(raw any) ([]OpenCodeGoProtocolRule, error) {
+	items, err := openCodeGoProtocolRuleItems(raw)
+	if err != nil {
+		return nil, err
+	}
+	if len(items) > maxOpenCodeGoProtocolRules {
+		return nil, fmt.Errorf("protocol_rules supports at most %d entries", maxOpenCodeGoProtocolRules)
+	}
+	rules := make([]OpenCodeGoProtocolRule, 0, len(items))
+	for i, item := range items {
+		entry, ok := item.(map[string]any)
+		if !ok {
+			return nil, fmt.Errorf("protocol_rules[%d] must be an object", i)
+		}
+		pattern, _ := entry["pattern"].(string)
+		protocol, _ := entry["protocol"].(string)
+		pattern, err := normalizeOpenCodeGoProtocolPattern(pattern)
+		if err != nil {
+			return nil, fmt.Errorf("protocol_rules[%d]: %w", i, err)
+		}
+		protocol = strings.TrimSpace(protocol)
+		if !isNativeOpenCodeGoProtocol(protocol) {
+			return nil, fmt.Errorf("protocol_rules[%d]: protocol must be chat_completions, anthropic, or responses", i)
+		}
+		rules = append(rules, OpenCodeGoProtocolRule{Pattern: pattern, Protocol: protocol})
+	}
+	return rules, nil
+}
+
+func openCodeGoProtocolRuleItems(raw any) ([]any, error) {
+	switch items := raw.(type) {
+	case []any:
+		return items, nil
+	case []map[string]any:
+		out := make([]any, 0, len(items))
+		for _, item := range items {
+			out = append(out, item)
+		}
+		return out, nil
+	default:
+		return nil, fmt.Errorf("protocol_rules must be an array")
+	}
+}
+
+func normalizeOpenCodeGoProtocolPattern(pattern string) (string, error) {
+	pattern = strings.ToLower(strings.TrimSpace(pattern))
+	if pattern == "" {
+		return "", fmt.Errorf("pattern is required")
+	}
+	if len(pattern) > maxOpenCodeGoProtocolPatternLength {
+		return "", fmt.Errorf("pattern is too long")
+	}
+	if strings.ContainsAny(pattern, " \t") {
+		return "", fmt.Errorf("pattern must not contain whitespace")
+	}
+	star := strings.Count(pattern, "*")
+	if star > 1 || (star == 1 && !strings.HasSuffix(pattern, "*")) {
+		return "", fmt.Errorf("pattern may use a single trailing * wildcard")
+	}
+	return pattern, nil
+}
+
+// NormalizeOpenCodeGoProtocolRulesCredentials 校验并原地规范化 credentials.protocol_rules。
+// 未携带该字段时为 no-op，使旧账号继续使用内置默认表。
+func NormalizeOpenCodeGoProtocolRulesCredentials(credentials map[string]any) error {
+	if credentials == nil {
+		return nil
+	}
+	raw, ok := credentials[openCodeGoProtocolRulesKey]
+	if !ok || raw == nil {
+		return nil
+	}
+	rules, err := parseOpenCodeGoProtocolRules(raw)
+	if err != nil {
+		return infraerrors.New(http.StatusBadRequest, "INVALID_OPENCODE_GO_PROTOCOL_RULES", err.Error())
+	}
+	encoded := make([]any, 0, len(rules))
+	for _, rule := range rules {
+		encoded = append(encoded, map[string]any{
+			"pattern":  rule.Pattern,
+			"protocol": rule.Protocol,
+		})
+	}
+	credentials[openCodeGoProtocolRulesKey] = encoded
+	return nil
+}
+
+func (a *Account) IsOpenCodeGo() bool {
+	return a != nil && a.Platform == PlatformOpenCodeGo
+}
+
+// GetOpenCodeAccountMode 返回 OpenCode 账号类型。未设置时按 Go 处理，兼容已有账号。
+func (a *Account) GetOpenCodeAccountMode() string {
+	if a == nil || !a.IsOpenCodeGo() {
+		return ""
+	}
+	if strings.TrimSpace(a.GetCredential("account_mode")) == AccountModeZen {
+		return AccountModeZen
+	}
+	return AccountModeGo
+}
+
+func (a *Account) IsOpenCodeZen() bool {
+	return a.GetOpenCodeAccountMode() == AccountModeZen
+}
+
+func (a *Account) IsOpenCodeGoPlan() bool {
+	return a.GetOpenCodeAccountMode() == AccountModeGo
+}
+
+func (a *Account) openCodeDefaultChatBaseURL() string {
+	if a.IsOpenCodeZen() {
+		return DefaultOpenCodeZenBaseURL
+	}
+	return DefaultOpenCodeGoBaseURL
+}
+
+func (a *Account) openCodeDefaultAnthropicBaseURL() string {
+	if a.IsOpenCodeZen() {
+		return DefaultOpenCodeZenAnthropicBaseURL
+	}
+	return DefaultOpenCodeGoAnthropicBaseURL
+}
+
+func (a *Account) IsMultiProtocolAPIKey() bool {
+	return a != nil && IsMultiProtocolAPIKeyProvider(a.Platform)
+}
+
+// openCodeGoNativeProtocol 返回 OpenCode Go 实际上游协议。
+// 规则未命中、空值或未知协议一律兜底 Chat Completions，避免落入 Responses 转换链。
+func openCodeGoNativeProtocol(account *Account, model string) string {
+	if account == nil {
+		return APIProtocolChatCompletions
+	}
+	switch proto := account.ResolveOpenCodeGoUpstreamProtocol(model); proto {
+	case APIProtocolAnthropic, APIProtocolResponses:
+		return proto
+	default:
+		return APIProtocolChatCompletions
+	}
+}
+
+// ResolveOpenCodeGoUpstreamProtocol 按账号协议配置与模型规则决定上游协议。
+// 显式 pinned 协议优先；adaptive（默认）先走 credentials.protocol_rules，
+// 未配置时回落内置默认表；已配置但未命中则走 Chat Completions。
+func (a *Account) ResolveOpenCodeGoUpstreamProtocol(model string) string {
+	if a == nil || !a.IsOpenCodeGo() {
+		return ""
+	}
+	switch a.GetAPIProtocol() {
+	case APIProtocolChatCompletions, APIProtocolAnthropic, APIProtocolResponses:
+		return a.GetAPIProtocol()
+	default:
+		if rules, present := a.openCodeGoProtocolRules(); present {
+			return matchOpenCodeGoProtocolRules(model, rules)
+		}
+		return matchOpenCodeGoProtocolRules(model, defaultOpenCodeProtocolRules(a.GetOpenCodeAccountMode()))
+	}
+}
+
+func openCodeGoQuotaURL(baseURL string) string {
+	base := strings.TrimRight(strings.TrimSpace(baseURL), "/")
+	if base == "" {
+		base = DefaultOpenCodeGoBaseURL
+	}
+	return base + openCodeGoUsagePath
+}

backend/internal/service/opencode_go_test.go

@@ -0,0 +1,220 @@
+package service
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestOpenCodeGoModelProtocol(t *testing.T) {
+	t.Parallel()
+	cases := []struct {
+		model string
+		want  string
+	}{
+		{"grok-4.6", APIProtocolResponses},
+		{"opencode-go/gpt-5.6-luna", APIProtocolResponses},
+		{"muse-spark-1.3-contributor", APIProtocolResponses},
+		{"minimax-m3", APIProtocolAnthropic},
+		{"qwen3.8-max", APIProtocolAnthropic},
+		{"qwen3.7-plus", APIProtocolAnthropic},
+		{"glm-5.3", APIProtocolChatCompletions},
+		{"kimi-k3", APIProtocolChatCompletions},
+		{"deepseek-v4-pro", APIProtocolChatCompletions},
+		{"mimo-v2.5-pro", APIProtocolChatCompletions},
+		{"hy4-preview", APIProtocolChatCompletions},
+		{"omen-alpha", APIProtocolChatCompletions},
+		{"", APIProtocolChatCompletions},
+		{"unknown-model", APIProtocolChatCompletions},
+	}
+	for _, tc := range cases {
+		require.Equal(t, tc.want, OpenCodeGoModelProtocol(tc.model), "model=%s", tc.model)
+	}
+}
+
+func TestResolveOpenCodeGoUpstreamProtocol(t *testing.T) {
+	t.Parallel()
+	adaptive := &Account{Platform: PlatformOpenCodeGo, Credentials: map[string]any{"api_protocol": APIProtocolAdaptive}}
+	require.Equal(t, APIProtocolAnthropic, adaptive.ResolveOpenCodeGoUpstreamProtocol("minimax-m3"))
+	require.Equal(t, APIProtocolResponses, adaptive.ResolveOpenCodeGoUpstreamProtocol("grok-4.6"))
+	require.Equal(t, APIProtocolChatCompletions, adaptive.ResolveOpenCodeGoUpstreamProtocol("glm-5.3"))
+
+	pinned := &Account{Platform: PlatformOpenCodeGo, Credentials: map[string]any{"api_protocol": APIProtocolChatCompletions}}
+	require.Equal(t, APIProtocolChatCompletions, pinned.ResolveOpenCodeGoUpstreamProtocol("minimax-m3"))
+
+	empty := &Account{Platform: PlatformOpenCodeGo}
+	require.Equal(t, APIProtocolResponses, empty.ResolveOpenCodeGoUpstreamProtocol("gpt-5.6-luna"))
+	require.Equal(t, AccountModeGo, empty.GetOpenCodeAccountMode())
+	require.True(t, empty.IsOpenCodeGoPlan())
+
+	zen := &Account{Platform: PlatformOpenCodeGo, Credentials: map[string]any{"account_mode": AccountModeZen, "api_protocol": APIProtocolAdaptive}}
+	require.Equal(t, APIProtocolChatCompletions, zen.ResolveOpenCodeGoUpstreamProtocol("minimax-m3"))
+	require.Equal(t, APIProtocolAnthropic, zen.ResolveOpenCodeGoUpstreamProtocol("claude-opus-4-6"))
+	require.Equal(t, DefaultOpenCodeZenBaseURL, zen.GetOpenAIBaseURL())
+
+	require.Equal(t, "", (&Account{Platform: PlatformKimi}).ResolveOpenCodeGoUpstreamProtocol("glm-5.3"))
+}
+
+func TestResolveOpenCodeGoUpstreamProtocolUsesAccountRules(t *testing.T) {
+	t.Parallel()
+	account := &Account{
+		Platform: PlatformOpenCodeGo,
+		Credentials: map[string]any{
+			"api_protocol": APIProtocolAdaptive,
+			openCodeGoProtocolRulesKey: []any{
+				map[string]any{"pattern": "grok-*", "protocol": APIProtocolChatCompletions},
+				map[string]any{"pattern": "deepseek-v4-flash", "protocol": APIProtocolResponses},
+				map[string]any{"pattern": "qwen*", "protocol": APIProtocolAnthropic},
+			},
+		},
+	}
+	require.Equal(t, APIProtocolChatCompletions, account.ResolveOpenCodeGoUpstreamProtocol("grok-4.6"))
+	require.Equal(t, APIProtocolResponses, account.ResolveOpenCodeGoUpstreamProtocol("deepseek-v4-flash"))
+	require.Equal(t, APIProtocolAnthropic, account.ResolveOpenCodeGoUpstreamProtocol("qwen3.8-max"))
+	require.Equal(t, APIProtocolChatCompletions, account.ResolveOpenCodeGoUpstreamProtocol("glm-5.3"))
+	require.Equal(t, APIProtocolChatCompletions, account.ResolveOpenCodeGoUpstreamProtocol("minimax-m3"))
+}
+
+func TestResolveOpenCodeGoUpstreamProtocolEmptyRulesAreAllChatCompletions(t *testing.T) {
+	t.Parallel()
+	account := &Account{
+		Platform: PlatformOpenCodeGo,
+		Credentials: map[string]any{
+			openCodeGoProtocolRulesKey: []any{},
+		},
+	}
+	require.Equal(t, APIProtocolChatCompletions, account.ResolveOpenCodeGoUpstreamProtocol("grok-4.6"))
+	require.Equal(t, APIProtocolChatCompletions, account.ResolveOpenCodeGoUpstreamProtocol("minimax-m3"))
+}
+
+func TestResolveOpenCodeGoUpstreamProtocolFirstMatchWins(t *testing.T) {
+	t.Parallel()
+	account := &Account{
+		Platform: PlatformOpenCodeGo,
+		Credentials: map[string]any{
+			openCodeGoProtocolRulesKey: []any{
+				map[string]any{"pattern": "gpt-5.6-luna", "protocol": APIProtocolChatCompletions},
+				map[string]any{"pattern": "gpt-*", "protocol": APIProtocolResponses},
+			},
+		},
+	}
+	require.Equal(t, APIProtocolChatCompletions, account.ResolveOpenCodeGoUpstreamProtocol("gpt-5.6-luna"))
+	require.Equal(t, APIProtocolResponses, account.ResolveOpenCodeGoUpstreamProtocol("gpt-5.4"))
+}
+
+func TestOpenCodeGoNativeProtocolUnmatchedFallsBackToChatCompletions(t *testing.T) {
+	t.Parallel()
+	withRules := &Account{
+		Platform: PlatformOpenCodeGo,
+		Credentials: map[string]any{
+			"api_protocol": APIProtocolAdaptive,
+			openCodeGoProtocolRulesKey: []any{
+				map[string]any{"pattern": "grok-*", "protocol": APIProtocolResponses},
+				map[string]any{"pattern": "gpt-*", "protocol": APIProtocolResponses},
+				map[string]any{"pattern": "qwen*", "protocol": APIProtocolAnthropic},
+			},
+		},
+	}
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(withRules, "deepseek-v4-flash"))
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(withRules, "glm-5.3"))
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(withRules, "omen-alpha"))
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(withRules, "kimi-k3"))
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(withRules, "unknown-model"))
+	require.Equal(t, APIProtocolResponses, openCodeGoNativeProtocol(withRules, "grok-4.6"))
+	require.Equal(t, APIProtocolAnthropic, openCodeGoNativeProtocol(withRules, "qwen3.8-flash"))
+
+	defaults := &Account{Platform: PlatformOpenCodeGo}
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(defaults, "deepseek-v4-flash"))
+	require.Equal(t, APIProtocolChatCompletions, openCodeGoNativeProtocol(nil, "grok-4.6"))
+}
+
+func TestParseOpenCodeGoProtocolRulesAcceptsTypedMaps(t *testing.T) {
+	t.Parallel()
+	rules, err := parseOpenCodeGoProtocolRules([]map[string]any{
+		{"pattern": "grok-*", "protocol": APIProtocolResponses},
+		{"pattern": "qwen*", "protocol": APIProtocolAnthropic},
+	})
+	require.NoError(t, err)
+	require.Equal(t, []OpenCodeGoProtocolRule{
+		{Pattern: "grok-*", Protocol: APIProtocolResponses},
+		{Pattern: "qwen*", Protocol: APIProtocolAnthropic},
+	}, rules)
+}
+
+func TestShouldForwardOpenAIResponsesViaRawChatCompletions_OpenCodeGoIgnoresProbe(t *testing.T) {
+	t.Parallel()
+	account := &Account{
+		Platform: PlatformOpenCodeGo,
+		Type:     AccountTypeAPIKey,
+		Credentials: map[string]any{
+			"api_protocol": APIProtocolAdaptive,
+		},
+		Extra: map[string]any{
+			"openai_responses_supported": false,
+		},
+	}
+	require.False(t, shouldForwardOpenAIResponsesViaRawChatCompletions(account))
+	require.Equal(t, APIProtocolResponses, account.ResolveOpenCodeGoUpstreamProtocol("grok-4.6"))
+	require.Equal(t, APIProtocolResponses, account.ResolveOpenCodeGoUpstreamProtocol("gpt-5.6-luna"))
+	require.Equal(t, APIProtocolAnthropic, account.ResolveOpenCodeGoUpstreamProtocol("qwen3.8-flash"))
+}
+
+func TestStampOpenAIResponsesUpstreamEndpoint(t *testing.T) {
+	t.Parallel()
+	result := &OpenAIForwardResult{}
+	stampOpenAIResponsesUpstreamEndpoint(nil, result)
+	require.Equal(t, "/v1/responses", result.UpstreamEndpoint)
+
+	existing := &OpenAIForwardResult{UpstreamEndpoint: "/v1/messages"}
+	stampOpenAIResponsesUpstreamEndpoint(nil, existing)
+	require.Equal(t, "/v1/messages", existing.UpstreamEndpoint)
+}
+
+func TestNormalizeOpenCodeGoProtocolRulesCredentials(t *testing.T) {
+	t.Parallel()
+	require.NoError(t, NormalizeOpenCodeGoProtocolRulesCredentials(nil))
+	require.NoError(t, NormalizeOpenCodeGoProtocolRulesCredentials(map[string]any{}))
+
+	creds := map[string]any{
+		openCodeGoProtocolRulesKey: []any{
+			map[string]any{"pattern": " Grok-* ", "protocol": APIProtocolResponses},
+		},
+	}
+	require.NoError(t, NormalizeOpenCodeGoProtocolRulesCredentials(creds))
+	rules, ok := creds[openCodeGoProtocolRulesKey].([]any)
+	require.True(t, ok)
+	require.NotEmpty(t, rules)
+	entry, ok := rules[0].(map[string]any)
+	require.True(t, ok)
+	require.Equal(t, "grok-*", entry["pattern"])
+
+	err := NormalizeOpenCodeGoProtocolRulesCredentials(map[string]any{
+		openCodeGoProtocolRulesKey: []any{
+			map[string]any{"pattern": "*grok", "protocol": APIProtocolResponses},
+		},
+	})
+	require.Error(t, err)
+
+	err = NormalizeOpenCodeGoProtocolRulesCredentials(map[string]any{
+		openCodeGoProtocolRulesKey: []any{
+			map[string]any{"pattern": "grok-*", "protocol": "adaptive"},
+		},
+	})
+	require.Error(t, err)
+}
+
+func TestOpenCodeGoQuotaURL(t *testing.T) {
+	t.Parallel()
+	require.Equal(t, "https://opencode.ai/zen/go/v1/usage", openCodeGoQuotaURL(""))
+	require.Equal(t, "https://opencode.ai/zen/go/v1/usage", openCodeGoQuotaURL(DefaultOpenCodeGoBaseURL+"/"))
+	require.Equal(t, "https://custom.example/v1/usage", openCodeGoQuotaURL("https://custom.example/v1"))
+}
+
+func TestDefaultOpenCodeGoModelIDsCoverDocumentedCatalog(t *testing.T) {
+	t.Parallel()
+	ids := DefaultOpenCodeGoModelIDs()
+	require.Contains(t, ids, "grok-4.6")
+	require.Contains(t, ids, "minimax-m3")
+	require.Contains(t, ids, "glm-5.3")
+	require.NotEmpty(t, ids)
+}

backend/internal/service/ratelimit_cn_providers.go

@@ -127,12 +127,19 @@ func (s *RateLimitService) cnBalanceCooldownDuration() time.Duration {
 // 周期额度探测刷新快照后阈值评估会再次停调到正确的时间点。
 // 无快照或均已过期返回 nil。
 func cnProviderQuotaSnapshotReset(account *Account, now time.Time) *time.Time {
-	if account == nil || !account.IsCNProvider() || !account.IsCodingPlan() || len(account.Extra) == 0 {
+	if account == nil || len(account.Extra) == 0 {
+		return nil
+	}
+	if !account.IsOpenCodeGo() && (!account.IsCNProvider() || !account.IsCodingPlan()) {
 		return nil
 	}
 	provider := account.Platform
+	suffixes := []string{cnExtraSuffix5hReset, cnExtraSuffixWeeklyReset}
+	if account.IsOpenCodeGo() {
+		suffixes = append(suffixes, cnExtraSuffixMonthlyReset)
+	}
 	var earliest *time.Time
-	for _, suffix := range []string{cnExtraSuffix5hReset, cnExtraSuffixWeeklyReset} {
+	for _, suffix := range suffixes {
 		t := parseSchedulingResetAt(account.Extra[cnExtraKey(provider, suffix)])
 		if t == nil || !t.After(now) {
 			continue
@@ -152,6 +159,36 @@ func (s *RateLimitService) applyCNProviderReactive429(
 	headers http.Header,
 	responseBody []byte,
 ) bool {
+	if account.IsOpenCodeGo() {
+		if until := cnProviderQuotaSnapshotReset(account, time.Now()); until != nil {
+			s.notifyAccountSchedulingBlocked(account, *until, "429")
+			if err := s.accountRepo.SetRateLimited(ctx, account.ID, *until); err != nil {
+				slog.Warn("rate_limit_set_failed", "account_id", account.ID, "error", err)
+				return true
+			}
+			slog.Info("opencode_go_rate_limited",
+				"account_id", account.ID,
+				"platform", account.Platform,
+				"reset_at", *until,
+			)
+			return true
+		}
+		if resetAt := parseOpenAIRateLimitResetTime(responseBody); resetAt != nil {
+			resetTime := time.Unix(*resetAt, 0)
+			s.notifyAccountSchedulingBlocked(account, resetTime, "429")
+			if err := s.accountRepo.SetRateLimited(ctx, account.ID, resetTime); err != nil {
+				slog.Warn("rate_limit_set_failed", "account_id", account.ID, "error", err)
+				return true
+			}
+			slog.Info("opencode_go_rate_limited",
+				"account_id", account.ID,
+				"platform", account.Platform,
+				"reset_at", resetTime,
+			)
+			return true
+		}
+		return false
+	}
 	if !account.IsCNProvider() {
 		return false
 	}

backend/internal/service/ratelimit_service.go

@@ -990,7 +990,7 @@ func (s *RateLimitService) handle403(ctx context.Context, account *Account, upst
 	// 国产供应商与 openai 同口径:HTML 403(CDN/代理拦截页)不构成账号失效证据,
 	// 且 403 在 failover 状态集里会被逐账号重放——直接 SetError 会让一个坏请求/
 	// 一层坏代理连环永久禁用整组账号。走 HTML 豁免 + N 次累计 + 临时冷却。
-	if account.Platform == PlatformOpenAI || IsCNProvider(account.Platform) {
+	if account.Platform == PlatformOpenAI || IsCNProvider(account.Platform) || account.IsOpenCodeGo() {
 		return s.handleOpenAI403(ctx, account, upstreamMsg, responseBody)
 	}
 	// 非 Antigravity 平台：保持原有行为
@@ -1154,7 +1154,7 @@ func (s *RateLimitService) handle429(ctx context.Context, account *Account, head
 	}
 	// 国产供应商（kimi/zhipu/deepseek）的 429 走专用可恢复路径：余额不足 → 临时停调，
 	// Coding Plan 窗口耗尽 → 冷却到快照重置点。未命中则继续默认 429 逻辑。
-	if account.IsCNProvider() {
+	if account.IsCNProvider() || account.IsOpenCodeGo() {
 		if s.applyCNProviderReactive429(ctx, account, headers, responseBody) {
 			return
 		}

backend/internal/service/scheduler_snapshot_bulk_event_test.go

@@ -115,7 +115,7 @@ func TestSchedulerBulkAccountEventScopesOpenAIRebuildToFreshPlatform(t *testing.
 }
 
 func TestSchedulerBulkAccountEventScopesCNRebuildToFreshPlatform(t *testing.T) {
-	for _, platform := range []string{PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax} {
+	for _, platform := range []string{PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo} {
 		t.Run(platform, func(t *testing.T) {
 			cache := newBulkEventSnapshotCache()
 			repo := newBulkEventAccountRepo(&Account{ID: 1, Platform: platform, GroupIDs: []int64{12}})

backend/internal/service/scheduler_snapshot_service.go

@@ -609,7 +609,7 @@ func (s *SchedulerSnapshotService) handleBulkAccountEvent(ctx context.Context, p
 		}
 		accountGroupIDs := s.normalizeGroupIDs(account.GroupIDs)
 		switch account.Platform {
-		case PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
+		case PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo:
 			addPlatformGroups(account.Platform, accountGroupIDs)
 		case PlatformAntigravity:
 			// 批量更新可能刚关闭 mixed_scheduling，仍需清理两个兼容平台的旧快照。
@@ -824,8 +824,8 @@ func (s *SchedulerSnapshotService) rebuildByAccount(ctx context.Context, account
 	return s.rebuildBuckets(ctx, buckets, reason)
 }
 
-func schedulerSnapshotPlatforms() [9]string {
-	return [9]string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax}
+func schedulerSnapshotPlatforms() [10]string {
+	return [10]string{PlatformAnthropic, PlatformGemini, PlatformOpenAI, PlatformAntigravity, PlatformGrok, PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo}
 }
 
 // 生命周期辅助函数有意排除 group0；full rebuild 构造 group0 canonical 集时必须显式调用 canonical helper。

backend/internal/service/upstream_billing_probe.go

@@ -1013,7 +1013,7 @@ func IsUpstreamBillingProbeIdentity(platform, accountType string) bool {
 	}
 	switch platform {
 	case PlatformOpenAI, PlatformAnthropic, PlatformGemini, PlatformAntigravity, PlatformGrok,
-		PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax:
+		PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo:
 		return true
 	default:
 		return false
@@ -1051,6 +1051,7 @@ var upstreamBillingProbeOfficialAPIDomains = []string{
 	"kimi.com",
 	"bigmodel.cn",
 	"deepseek.com",
+	"opencode.ai",
 }
 
 func upstreamBillingProbeTargetIsOfficialAPI(baseURL string) bool {

backend/internal/service/upstream_billing_probe_multiplatform_test.go

@@ -16,7 +16,7 @@ import (
 func TestUpstreamBillingProbeIdentityCoversAllAPIKeyPlatforms(t *testing.T) {
 	for _, platform := range []string{
 		PlatformOpenAI, PlatformGrok, PlatformAnthropic, PlatformGemini, PlatformAntigravity,
-		PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax,
+		PlatformKimi, PlatformZhipu, PlatformDeepseek, PlatformMiniMax, PlatformOpenCodeGo,
 	} {
 		require.True(t, IsUpstreamBillingProbeIdentity(platform, AccountTypeAPIKey), platform)
 		require.True(t, isUpstreamBillingProbeAccount(&Account{Platform: platform, Type: AccountTypeAPIKey}), platform)
@@ -172,6 +172,8 @@ func TestUpstreamBillingProbeOfficialAPIBaseURLIsUnsupportedWithoutRequest(t *te
 		{PlatformZhipu, "https://open.bigmodel.cn/api/anthropic"},
 		{PlatformDeepseek, "https://api.deepseek.com"},
 		{PlatformDeepseek, "https://api.deepseek.com/anthropic"},
+		{PlatformOpenCodeGo, "https://opencode.ai/zen/go/v1"},
+		{PlatformOpenCodeGo, "https://opencode.ai/zen/go"},
 	}
 	for i, tc := range cases {
 		account := &Account{
@@ -213,6 +215,8 @@ func TestUpstreamBillingProbeOfficialAPIHostMatchingIsNormalized(t *testing.T) {
 	require.True(t, upstreamBillingProbeTargetIsOfficialAPI("https://api.kimi.com/coding/v1"))
 	require.True(t, upstreamBillingProbeTargetIsOfficialAPI("https://open.bigmodel.cn/api/anthropic"))
 	require.True(t, upstreamBillingProbeTargetIsOfficialAPI("https://api.deepseek.com/anthropic"))
+	require.True(t, upstreamBillingProbeTargetIsOfficialAPI("https://opencode.ai/zen/go/v1"))
+	require.True(t, upstreamBillingProbeTargetIsOfficialAPI("https://opencode.ai/zen/go"))
 	// 相似但不同的注册域不拦：中转完全可能叫 *-x.ai 之外的任何名字。
 	require.False(t, upstreamBillingProbeTargetIsOfficialAPI("https://relay.example/v1"))
 	require.False(t, upstreamBillingProbeTargetIsOfficialAPI("https://notx.ai"))

backend/internal/service/upstream_models.go

@@ -617,7 +617,7 @@ func upstreamModelRegistryBaseURL(account *Account) string {
 		return ""
 	}
 	switch {
-	case account.IsOpenAI() || account.IsCNProvider():
+	case account.IsOpenAI() || account.IsCNProvider() || account.IsOpenCodeGo():
 		return account.GetOpenAIFormatBaseURL()
 	case account.IsGrok():
 		return account.GetGrokBaseURL()
@@ -677,6 +677,8 @@ func matchModelsDevProviderByKnownHost(registry map[string]modelsDevProvider, ac
 	switch host {
 	case "api.openai.com", "chatgpt.com":
 		providerID = "openai"
+	case "opencode.ai":
+		providerID = "opencode-go"
 	default:
 		return modelsDevProvider{}, false
 	}
@@ -782,8 +784,9 @@ func (s *AccountTestService) buildUpstreamModelsRequest(ctx context.Context, acc
 		return s.buildAntigravityAPIKeyModelsRequest(ctx, account)
 	case account.IsGrok():
 		return s.buildGrokUpstreamModelsRequest(ctx, account)
-	case account.IsOpenAI() || account.IsCNProvider():
-		// 国产 OpenAI 兼容供应商（kimi/zhipu/deepseek）复用 OpenAI /v1/models 探测。
+	case account.IsOpenAI() || account.IsCNProvider() || account.IsOpenCodeGo():
+		// 国产 OpenAI 兼容供应商（kimi/zhipu/deepseek）与 OpenCode Go
+		// 复用 OpenAI /v1/models 探测。
 		return s.buildOpenAIUpstreamModelsRequest(ctx, account)
 	case account.IsGemini():
 		return s.buildGeminiUpstreamModelsRequest(ctx, account)

backend/internal/setup/setup_test.go

@@ -270,7 +270,7 @@ func TestDatabaseConnectionUsesConfiguredTargetBeforeBootstrapDatabase(t *testin
 	if err != nil {
 		t.Fatalf("sqlmock.New() error = %v", err)
 	}
-	defer targetDB.Close()
+	defer func() { _ = targetDB.Close() }()
 
 	var opened []string
 	openDatabase := func(_ *DatabaseConfig, dbName string) (*sql.DB, error) {
@@ -292,12 +292,12 @@ func TestDatabaseConnectionUsesLegacyBootstrapOnlyForMissingTarget(t *testing.T)
 	if err != nil {
 		t.Fatalf("sqlmock.New() bootstrap error = %v", err)
 	}
-	defer bootstrapDB.Close()
+	defer func() { _ = bootstrapDB.Close() }()
 	targetDB, _, err := sqlmock.New()
 	if err != nil {
 		t.Fatalf("sqlmock.New() target error = %v", err)
 	}
-	defer targetDB.Close()
+	defer func() { _ = targetDB.Close() }()
 
 	bootstrapMock.ExpectQuery(`SELECT EXISTS\(SELECT 1 FROM pg_database WHERE datname = \$1\)`).
 		WithArgs(cfg.DBName).

backend/migrations/238_opencode_go_platform.sql

@@ -0,0 +1,62 @@
+-- Add OpenCode as a first-class platform (account types Zen / GO).
+--
+-- 1. user_platform_quotas.platform CHECK
+-- 2. composite_model_routes.target_platform CHECK
+-- 3. channel_monitors / channel_monitor_request_templates provider CHECK
+--
+-- Runs after 237_add_minimax_platform.sql. DROP ... IF EXISTS + 幂等守卫保证可重入；
+-- 新约束是 237 的超集，必须同时保留 MiniMax。
+
+ALTER TABLE user_platform_quotas
+    DROP CONSTRAINT IF EXISTS user_platform_quotas_platform_check;
+
+ALTER TABLE user_platform_quotas
+    ADD CONSTRAINT user_platform_quotas_platform_check
+    CHECK (platform IN ('anthropic', 'openai', 'gemini', 'antigravity', 'grok',
+                        'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'));
+
+ALTER TABLE composite_model_routes
+    DROP CONSTRAINT IF EXISTS composite_model_routes_target_platform_check;
+
+ALTER TABLE composite_model_routes
+    ADD CONSTRAINT composite_model_routes_target_platform_check
+    CHECK (target_platform IN ('anthropic', 'openai', 'gemini', 'antigravity', 'grok',
+                               'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'));
+
+DO $$
+DECLARE
+    monitor_constraint_def TEXT;
+    template_constraint_def TEXT;
+BEGIN
+    SELECT pg_get_constraintdef(c.oid)
+      INTO monitor_constraint_def
+      FROM pg_constraint c
+      JOIN pg_class t ON t.oid = c.conrelid
+     WHERE t.relname = 'channel_monitors'
+       AND c.conname = 'channel_monitors_provider_check';
+
+    IF monitor_constraint_def IS NULL OR position('opencode_go' IN monitor_constraint_def) = 0 THEN
+        ALTER TABLE channel_monitors
+            DROP CONSTRAINT IF EXISTS channel_monitors_provider_check;
+        ALTER TABLE channel_monitors
+            ADD CONSTRAINT channel_monitors_provider_check
+            CHECK (provider IN ('openai', 'anthropic', 'gemini', 'grok',
+                                'antigravity', 'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'));
+    END IF;
+
+    SELECT pg_get_constraintdef(c.oid)
+      INTO template_constraint_def
+      FROM pg_constraint c
+      JOIN pg_class t ON t.oid = c.conrelid
+     WHERE t.relname = 'channel_monitor_request_templates'
+       AND c.conname = 'channel_monitor_request_templates_provider_check';
+
+    IF template_constraint_def IS NULL OR position('opencode_go' IN template_constraint_def) = 0 THEN
+        ALTER TABLE channel_monitor_request_templates
+            DROP CONSTRAINT IF EXISTS channel_monitor_request_templates_provider_check;
+        ALTER TABLE channel_monitor_request_templates
+            ADD CONSTRAINT channel_monitor_request_templates_provider_check
+            CHECK (provider IN ('openai', 'anthropic', 'gemini', 'grok',
+                                'antigravity', 'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'));
+    END IF;
+END $$;

backend/migrations/opencode_go_platform_migration_test.go

@@ -0,0 +1,29 @@
+package migrations
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestOpenCodeGoPlatformMigration(t *testing.T) {
+	content, err := FS.ReadFile("238_opencode_go_platform.sql")
+	require.NoError(t, err)
+
+	sql := strings.Join(strings.Fields(string(content)), " ")
+	require.Contains(t, sql, "user_platform_quotas_platform_check")
+	require.Contains(t, sql, "composite_model_routes_target_platform_check")
+	require.Contains(t, sql, "channel_monitors_provider_check")
+	require.Contains(t, sql, "channel_monitor_request_templates_provider_check")
+	require.Contains(t, sql, "'opencode_go'")
+	require.Contains(t, sql, "'minimax'")
+	require.Contains(t, sql, "position('opencode_go' IN monitor_constraint_def) = 0")
+	require.Contains(t, sql, "position('opencode_go' IN template_constraint_def) = 0")
+	require.Contains(t, sql,
+		"CHECK (platform IN ('anthropic', 'openai', 'gemini', 'antigravity', 'grok', 'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'))")
+	require.Contains(t, sql,
+		"CHECK (target_platform IN ('anthropic', 'openai', 'gemini', 'antigravity', 'grok', 'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'))")
+	require.Contains(t, sql,
+		"CHECK (provider IN ('openai', 'anthropic', 'gemini', 'grok', 'antigravity', 'kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go'))")
+}

deploy/config.example.yaml

@@ -147,6 +147,7 @@ security:
       - "api.moonshot.cn"
       - "open.bigmodel.cn"
       - "api.minimaxi.com"
+      - "opencode.ai"
       - "generativelanguage.googleapis.com"
       - "cloudcode-pa.googleapis.com"
       - "*.openai.azure.com"

frontend/src/api/admin/channelMonitor.ts

@@ -15,6 +15,7 @@ export type Provider =
   | 'zhipu'
   | 'deepseek'
   | 'minimax'
+  | 'opencode_go'
 export type MonitorStatus = 'operational' | 'degraded' | 'failed' | 'error'
 export type BodyOverrideMode = 'off' | 'merge' | 'replace'
 export type APIMode = 'chat_completions' | 'responses'

frontend/src/api/admin/cnProviders.ts

@@ -7,7 +7,7 @@ import { apiClient } from '../client'
 
 /** 滚动用量窗口档（5 小时 / 每周），对齐后端 service.CNQuotaTier。 */
 export interface CNQuotaTier {
-  window: '5h' | 'weekly'
+  window: '5h' | 'weekly' | 'monthly'
   used_percent: number
   reset_at?: string
 }

frontend/src/api/admin/settings.ts

@@ -39,11 +39,12 @@ export type SchedulingThresholdPlatformType =
   | "kimi"
   | "zhipu"
   | "minimax"
+  | "opencode_go"
 
 export type AccountSchedulingThresholdsMap = Record<SchedulingThresholdPlatformType, number>
 
 // 与后端 AllowedSchedulingThresholdPlatforms 保持一致（deepseek 为余额型，
-// 走余额检测而非用量阈值；minimax Coding/Token Plan 有 5h/weekly 窗口）。
+// 走余额检测而非用量阈值；minimax Coding/Token Plan 与 OpenCode GO 有滚动窗口）。
 export const SCHEDULING_THRESHOLD_PLATFORMS: SchedulingThresholdPlatformType[] = [
   "openai",
   "anthropic",
@@ -51,6 +52,7 @@ export const SCHEDULING_THRESHOLD_PLATFORMS: SchedulingThresholdPlatformType[] =
   "kimi",
   "zhipu",
   "minimax",
+  "opencode_go",
 ]
 
 export function normalizeAccountSchedulingThresholdsMap(

frontend/src/components/account/AccountUsageCell.vue

@@ -431,7 +431,7 @@
     </template>
 
     <!-- CN providers (Kimi / Zhipu / DeepSeek): coding-plan quota or payg balance -->
-    <template v-else-if="account.platform === 'kimi' || account.platform === 'zhipu' || account.platform === 'deepseek' || account.platform === 'minimax'">
+    <template v-else-if="account.platform === 'kimi' || account.platform === 'zhipu' || account.platform === 'deepseek' || account.platform === 'minimax' || account.platform === 'opencode_go'">
       <!-- 挂在 CN 平台下的 Ollama Cloud 账号（资格由后端下发 eligible）：用量由
            Ollama 用量窗口负责。这类账号不是国产厂商订阅，CN 的额度/余额探测端点由
            base_url 衍生，对 ollama.com 会被后端出站 URL 白名单拒绝，渲染出来只会
@@ -729,7 +729,8 @@ const showUsageWindows = computed(() => {
     props.account.platform === 'kimi' ||
     props.account.platform === 'zhipu' ||
     props.account.platform === 'deepseek' ||
-    props.account.platform === 'minimax'
+    props.account.platform === 'minimax' ||
+    props.account.platform === 'opencode_go'
   ) {
     return true
   }

frontend/src/components/account/CNProviderQuotaCell.vue

@@ -108,7 +108,8 @@ const snapshotData = computed<CNProviderQuotaProbeResult | null>(() => {
   const platform = props.account.platform
   const used5h = readExtraNumber(`${platform}_5h_used_percent`)
   const usedWeekly = readExtraNumber(`${platform}_weekly_used_percent`)
-  if (used5h == null && usedWeekly == null) return null
+  const usedMonthly = readExtraNumber(`${platform}_monthly_used_percent`)
+  if (used5h == null && usedWeekly == null && usedMonthly == null) return null
   const tiers: CNProviderQuotaProbeResult['tiers'] = []
   if (used5h != null) {
     tiers.push({ window: '5h', used_percent: used5h, reset_at: readExtraString(`${platform}_5h_reset_at`) || undefined })
@@ -116,6 +117,9 @@ const snapshotData = computed<CNProviderQuotaProbeResult | null>(() => {
   if (usedWeekly != null) {
     tiers.push({ window: 'weekly', used_percent: usedWeekly, reset_at: readExtraString(`${platform}_weekly_reset_at`) || undefined })
   }
+  if (usedMonthly != null) {
+    tiers.push({ window: 'monthly', used_percent: usedMonthly, reset_at: readExtraString(`${platform}_monthly_reset_at`) || undefined })
+  }
   return { success: true, tiers } as CNProviderQuotaProbeResult
 })
 
@@ -161,10 +165,11 @@ const truncatedError = computed(() => {
   return error.value.length > 80 ? `${error.value.slice(0, 80)}...` : error.value
 })
 
-const windowLabel = (window: string) =>
-  window === 'weekly'
-    ? t('admin.accounts.cnProviders.windowWeekly')
-    : t('admin.accounts.cnProviders.window5h')
+const windowLabel = (window: string) => {
+  if (window === 'weekly') return t('admin.accounts.cnProviders.windowWeekly')
+  if (window === 'monthly') return t('admin.accounts.cnProviders.windowMonthly')
+  return t('admin.accounts.cnProviders.window5h')
+}
 
 const handleProbe = async () => {
   if (loading.value) return

frontend/src/components/account/CreateAccountModal.vue

@@ -161,13 +161,13 @@
             Grok
           </button>
         </div>
-        <!-- CN providers row: Kimi / Zhipu GLM / DeepSeek -->
+        <!-- Multi-protocol API-key providers: Kimi / Zhipu GLM / DeepSeek / OpenCode -->
         <div class="mt-2 flex flex-wrap rounded-lg bg-gray-100 p-1 dark:bg-dark-700">
           <button
             type="button"
             @click="selectCNPlatform('kimi')"
             :class="[
-              'flex flex-1 items-center justify-center gap-2 rounded-md px-4 py-2.5 text-sm font-medium transition-all',
+              'flex flex-1 items-center justify-center gap-2 rounded-md px-3 py-2.5 text-sm font-medium transition-all',
               form.platform === 'kimi'
                 ? 'bg-white text-pink-600 shadow-sm dark:bg-dark-600 dark:text-pink-400'
                 : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
@@ -180,7 +180,7 @@
             type="button"
             @click="selectCNPlatform('zhipu')"
             :class="[
-              'flex flex-1 items-center justify-center gap-2 rounded-md px-4 py-2.5 text-sm font-medium transition-all',
+              'flex flex-1 items-center justify-center gap-2 rounded-md px-3 py-2.5 text-sm font-medium transition-all',
               form.platform === 'zhipu'
                 ? 'bg-white text-indigo-600 shadow-sm dark:bg-dark-600 dark:text-indigo-400'
                 : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
@@ -193,7 +193,7 @@
             type="button"
             @click="selectCNPlatform('deepseek')"
             :class="[
-              'flex flex-1 items-center justify-center gap-2 rounded-md px-4 py-2.5 text-sm font-medium transition-all',
+              'flex flex-1 items-center justify-center gap-2 rounded-md px-3 py-2.5 text-sm font-medium transition-all',
               form.platform === 'deepseek'
                 ? 'bg-white text-teal-600 shadow-sm dark:bg-dark-600 dark:text-teal-400'
                 : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
@@ -206,7 +206,7 @@
             type="button"
             @click="selectCNPlatform('minimax')"
             :class="[
-              'flex flex-1 items-center justify-center gap-2 rounded-md px-4 py-2.5 text-sm font-medium transition-all',
+              'flex flex-1 items-center justify-center gap-2 rounded-md px-3 py-2.5 text-sm font-medium transition-all',
               form.platform === 'minimax'
                 ? 'bg-white text-rose-600 shadow-sm dark:bg-dark-600 dark:text-rose-400'
                 : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
@@ -215,6 +215,19 @@
             <PlatformIcon platform="minimax" size="sm" />
             MiniMax
           </button>
+          <button
+            type="button"
+            @click="selectOpenCodeGoPlatform()"
+            :class="[
+              'flex flex-1 items-center justify-center gap-2 rounded-md px-3 py-2.5 text-sm font-medium transition-all',
+              form.platform === 'opencode_go'
+                ? 'bg-white text-amber-700 shadow-sm dark:bg-dark-600 dark:text-amber-300'
+                : 'text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-200'
+            ]"
+          >
+            <PlatformIcon platform="opencode_go" size="sm" />
+            OpenCode
+          </button>
         </div>
       </div>
 
@@ -466,8 +479,61 @@
         </div>
       </div>
 
+      <!-- OpenCode Zen vs Go -->
+      <div v-if="isOpenCodeGoPlatform">
+        <label class="input-label">{{ t('admin.accounts.cnProviders.accountMode.title') }}</label>
+        <div class="mt-2 grid grid-cols-1 gap-3 sm:grid-cols-2">
+          <button
+            type="button"
+            @click="openCodeAccountMode = 'zen'"
+            :class="[
+              'flex items-center gap-3 rounded-lg border-2 p-3 text-left transition-all',
+              openCodeAccountMode === 'zen'
+                ? cnAccentActiveClass
+                : 'border-gray-200 hover:border-gray-400 dark:border-dark-600 dark:hover:border-gray-600'
+            ]"
+          >
+            <div
+              :class="[
+                'flex h-8 w-8 shrink-0 items-center justify-center rounded-lg',
+                openCodeAccountMode === 'zen' ? cnAccentIconClass : 'bg-gray-100 text-gray-500 dark:bg-dark-600 dark:text-gray-400'
+              ]"
+            >
+              <Icon name="creditCard" size="sm" />
+            </div>
+            <div>
+              <span class="block text-sm font-medium text-gray-900 dark:text-white">{{ t('admin.accounts.opencodeGo.accountMode.zen') }}</span>
+              <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.accounts.opencodeGo.accountMode.zenDesc') }}</span>
+            </div>
+          </button>
+          <button
+            type="button"
+            @click="openCodeAccountMode = 'go'"
+            :class="[
+              'flex items-center gap-3 rounded-lg border-2 p-3 text-left transition-all',
+              openCodeAccountMode === 'go'
+                ? cnAccentActiveClass
+                : 'border-gray-200 hover:border-gray-400 dark:border-dark-600 dark:hover:border-gray-600'
+            ]"
+          >
+            <div
+              :class="[
+                'flex h-8 w-8 shrink-0 items-center justify-center rounded-lg',
+                openCodeAccountMode === 'go' ? cnAccentIconClass : 'bg-gray-100 text-gray-500 dark:bg-dark-600 dark:text-gray-400'
+              ]"
+            >
+              <Icon name="bolt" size="sm" />
+            </div>
+            <div>
+              <span class="block text-sm font-medium text-gray-900 dark:text-white">{{ t('admin.accounts.opencodeGo.accountMode.go') }}</span>
+              <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.accounts.opencodeGo.accountMode.goDesc') }}</span>
+            </div>
+          </button>
+        </div>
+      </div>
+
       <!-- Account Mode Selection (Kimi / Zhipu / DeepSeek) -->
-      <div v-if="isCNPlatform">
+      <div v-if="isCNPlatform && !isOpenCodeGoPlatform">
         <label class="input-label">{{ t('admin.accounts.cnProviders.accountMode.title') }}</label>
         <div class="mt-2 grid grid-cols-1 gap-3 sm:grid-cols-2" data-tour="account-form-mode">
           <!-- Pay-as-you-go (token balance) -->
@@ -526,8 +592,8 @@
         </div>
       </div>
 
-      <!-- API Protocol Selection (Kimi / Zhipu / DeepSeek) -->
-      <div v-if="isCNPlatform" class="mt-4">
+      <!-- API Protocol Selection (Kimi / Zhipu / DeepSeek / OpenCode) -->
+      <div v-if="isMultiProtocolPlatform" class="mt-4">
         <label class="input-label">{{ t('admin.accounts.cnProviders.apiProtocol.title') }}</label>
         <div class="mt-2 grid grid-cols-1 gap-3 sm:grid-cols-3">
           <button
@@ -1293,7 +1359,7 @@
 
       <!-- API Key input (only for apikey type, excluding Antigravity which has its own fields) -->
       <div v-if="form.type === 'apikey' && form.platform !== 'antigravity'" class="space-y-4">
-        <div v-if="!isCNPlatform || apiProtocol !== 'adaptive'">
+        <div v-if="!isMultiProtocolPlatform || apiProtocol !== 'adaptive'">
           <label class="input-label">{{ t('admin.accounts.baseUrl') }}</label>
           <input
             v-model="apiKeyBaseUrl"
@@ -1308,7 +1374,7 @@
             @select="apiKeyBaseUrl = $event"
           />
           <CnBaseUrlPresets
-            v-if="isCNPlatform"
+            v-if="isCNPlatform && !isOpenCodeGoPlatform"
             class="mt-2"
             :platform="cnPresetPlatform"
             :mode="accountMode"
@@ -1336,6 +1402,11 @@
             {{ t('admin.accounts.cnProviders.apiProtocol.responsesFallbackDesc') }}
           </p>
         </div>
+        <OpenCodeGoProtocolRulesEditor
+          v-if="isOpenCodeGoPlatform && apiProtocol === 'adaptive'"
+          v-model:rows="openCodeGoProtocolRules"
+          :plan="openCodeAccountMode"
+        />
         <div>
           <label class="input-label">{{ t('admin.accounts.apiKeyRequired') }}</label>
           <input
@@ -3866,15 +3937,19 @@ import QuotaLimitCard from '@/components/account/QuotaLimitCard.vue'
 import Toggle from '@/components/common/Toggle.vue'
 import GrokBaseUrlPresets from '@/components/account/GrokBaseUrlPresets.vue'
 import CnBaseUrlPresets from '@/components/account/CnBaseUrlPresets.vue'
+import OpenCodeGoProtocolRulesEditor from '@/components/account/OpenCodeGoProtocolRulesEditor.vue'
 import HeaderOverrideEditor from '@/components/account/HeaderOverrideEditor.vue'
 import { allSelectedGroupsEnableLongContextPricing } from '@/components/account/longContextBilling'
 import {
   applyAntigravityProjectID,
   applyHeaderOverride,
   applyInterceptWarmup,
+  applyOpenCodeGoProtocolRules,
+  cloneOpenCodeGoProtocolRules,
   cnSupportsNativeResponses,
   defaultCNAdaptiveBaseUrls,
   defaultCNBaseUrl,
+  defaultOpenCodeProtocolRules,
   isCNProviderPlatform,
   isHeaderOverrideCapable,
   validateHeaderOverrideRows,
@@ -3882,7 +3957,9 @@ import {
   type CnApiProtocol,
   type CnNativeApiProtocol,
   type CnProviderPlatform,
-  type HeaderOverrideRow
+  type HeaderOverrideRow,
+  type OpenCodeAccountMode,
+  type OpenCodeGoProtocolRule
 } from '@/components/account/credentialsBuilder'
 import {
   formatDateTimeLocalInput,
@@ -3955,8 +4032,9 @@ const apiKeyHint = computed(() => {
 
 // Base URL / API Key 占位符：国产供应商随账号类型变化。
 const apiKeyBaseUrlPlaceholder = computed(() => {
-  if (isCNPlatform.value) {
-    return defaultCNBaseUrl(form.platform, accountMode.value, apiProtocol.value) || 'https://api.example.com'
+  if (isMultiProtocolPlatform.value) {
+    const mode = form.platform === 'opencode_go' ? openCodeAccountMode.value : accountMode.value
+    return defaultCNBaseUrl(form.platform, mode, apiProtocol.value) || 'https://api.example.com'
   }
   switch (form.platform) {
     case 'openai':
@@ -3985,6 +4063,7 @@ const apiKeyValuePlaceholder = computed(() => {
     case 'deepseek':
       return 'sk-...'
     case 'minimax':
+    case 'opencode_go':
       return 'sk-...'
     default:
       return 'sk-ant-...'
@@ -4076,9 +4155,13 @@ const upstreamBillingAutoProbeEnabled = ref(true)
 
 // ── 国产供应商（Kimi / Zhipu / DeepSeek）账号类型、API 协议与端点 ──
 const accountMode = ref<CnAccountMode>('payg')
+const openCodeAccountMode = ref<OpenCodeAccountMode>('zen')
 // API 协议决定转发端点与格式：cc=现有转换链，anthropic=原生直通（Claude Code），
 // responses=deepseek / kimi 原生 Responses 端点（Codex）。与账号类型正交。
 const apiProtocol = ref<CnApiProtocol>('adaptive')
+const openCodeGoProtocolRules = ref<OpenCodeGoProtocolRule[]>(
+  cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules('zen'))
+)
 // 智谱团队版 Coding Plan：组织/项目 ID，写入 credentials 供额度探测切换团队端点
 const zhipuOrganization = ref('')
 const zhipuProject = ref('')
@@ -4088,6 +4171,11 @@ const adaptiveBaseUrls = ref<Record<CnNativeApiProtocol, string>>({
   responses: ''
 })
 const isCNPlatform = computed(() => isCNProviderPlatform(form.platform))
+const isOpenCodeGoPlatform = computed(() => form.platform === 'opencode_go')
+const isMultiProtocolPlatform = computed(() => isCNPlatform.value || isOpenCodeGoPlatform.value)
+function currentOpenCodeOrCNMode(): CnAccountMode | OpenCodeAccountMode {
+  return isOpenCodeGoPlatform.value ? openCodeAccountMode.value : accountMode.value
+}
 // CnBaseUrlPresets 的 platform prop 是平台字面量联合类型，模板里不能写
 // `as` 断言（其中的 `|` 会被 eslint 误判为 Vue2 filter 语法），经此 computed 传递。
 const cnPresetPlatform = computed<CnProviderPlatform>(() => {
@@ -4096,6 +4184,10 @@ const cnPresetPlatform = computed<CnProviderPlatform>(() => {
   }
   return 'kimi'
 })
+const adaptivePresetPlatform = computed<CnProviderPlatform | 'opencode_go'>(() => {
+  if (form.platform === 'opencode_go') return 'opencode_go'
+  return cnPresetPlatform.value
+})
 // 当前平台可选的协议档（responses 仅 deepseek / kimi）。
 const cnProtocolOptions = computed<Array<{ value: CnApiProtocol; labelKey: string }>>(() => {
   const opts: Array<{ value: CnApiProtocol; labelKey: string }> = [
@@ -4117,7 +4209,10 @@ const cnAdaptiveProtocolOptions = computed<Array<{ value: CnNativeApiProtocol; l
   return opts
 })
 
-function resetAdaptiveBaseUrls(platform: CnProviderPlatform, mode: CnAccountMode) {
+function resetAdaptiveBaseUrls(
+  platform: CnProviderPlatform | 'opencode_go',
+  mode: CnAccountMode | OpenCodeAccountMode
+) {
   adaptiveBaseUrls.value = defaultCNAdaptiveBaseUrls(platform, mode)
 }
 // 当前选中平台的品牌色（选中卡片描边 / 图标底色），与 platformColors 取色一致。
@@ -4131,6 +4226,8 @@ const cnAccentActiveClass = computed(() => {
       return 'border-teal-500 bg-teal-50 dark:bg-teal-900/20'
     case 'minimax':
       return 'border-rose-500 bg-rose-50 dark:bg-rose-900/20'
+    case 'opencode_go':
+      return 'border-amber-500 bg-amber-50 dark:bg-amber-900/20'
     default:
       return 'border-primary-500 bg-primary-50 dark:bg-primary-900/20'
   }
@@ -4145,6 +4242,8 @@ const cnAccentIconClass = computed(() => {
       return 'bg-teal-500 text-white'
     case 'minimax':
       return 'bg-rose-500 text-white'
+    case 'opencode_go':
+      return 'bg-amber-500 text-white'
     default:
       return 'bg-primary-500 text-white'
   }
@@ -4162,12 +4261,41 @@ function selectCNPlatform(platform: CnProviderPlatform) {
   apiKeyBaseUrl.value = defaultCNBaseUrl(platform, accountMode.value, apiProtocol.value)
   resetAdaptiveBaseUrls(platform, accountMode.value)
 }
+function selectOpenCodeGoPlatform() {
+  form.platform = 'opencode_go'
+  form.type = 'apikey'
+  accountCategory.value = 'apikey'
+  apiProtocol.value = 'adaptive'
+  openCodeAccountMode.value = 'zen'
+  apiKeyBaseUrl.value = defaultCNBaseUrl('opencode_go', openCodeAccountMode.value, 'adaptive')
+  resetAdaptiveBaseUrls('opencode_go', openCodeAccountMode.value)
+  openCodeGoProtocolRules.value = cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules(openCodeAccountMode.value))
+}
 // 账号类型 / 协议变更时同步默认 base url。
-watch(accountMode, (mode, previousMode) => {
-  if (!isCNPlatform.value) return
+watch(openCodeAccountMode, (mode, previousMode) => {
+  if (!isOpenCodeGoPlatform.value) return
   if (apiProtocol.value === 'adaptive') {
-    const previousDefaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, previousMode)
-    const nextDefaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, mode)
+    const previousDefaults = defaultCNAdaptiveBaseUrls('opencode_go', previousMode)
+    const nextDefaults = defaultCNAdaptiveBaseUrls('opencode_go', mode)
+    for (const item of cnAdaptiveProtocolOptions.value) {
+      if (!adaptiveBaseUrls.value[item.value] || adaptiveBaseUrls.value[item.value] === previousDefaults[item.value]) {
+        adaptiveBaseUrls.value[item.value] = nextDefaults[item.value]
+      }
+    }
+    apiKeyBaseUrl.value = adaptiveBaseUrls.value.chat_completions
+  } else {
+    apiKeyBaseUrl.value = defaultCNBaseUrl('opencode_go', mode, apiProtocol.value)
+  }
+  const previousRules = JSON.stringify(defaultOpenCodeProtocolRules(previousMode))
+  if (JSON.stringify(openCodeGoProtocolRules.value) === previousRules) {
+    openCodeGoProtocolRules.value = cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules(mode))
+  }
+})
+watch(accountMode, (mode, previousMode) => {
+  if (!isMultiProtocolPlatform.value || isOpenCodeGoPlatform.value) return
+  if (apiProtocol.value === 'adaptive') {
+    const previousDefaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, previousMode)
+    const nextDefaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, mode)
     for (const item of cnAdaptiveProtocolOptions.value) {
       if (!adaptiveBaseUrls.value[item.value] || adaptiveBaseUrls.value[item.value] === previousDefaults[item.value]) {
         adaptiveBaseUrls.value[item.value] = nextDefaults[item.value]
@@ -4179,16 +4307,16 @@ watch(accountMode, (mode, previousMode) => {
   apiKeyBaseUrl.value = defaultCNBaseUrl(form.platform, mode, apiProtocol.value)
 })
 watch(apiProtocol, (protocol) => {
-  if (!isCNPlatform.value) return
+  if (!isMultiProtocolPlatform.value) return
   if (protocol === 'adaptive') {
-    const defaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, accountMode.value)
+    const defaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, currentOpenCodeOrCNMode())
     for (const item of cnAdaptiveProtocolOptions.value) {
       if (!adaptiveBaseUrls.value[item.value]) adaptiveBaseUrls.value[item.value] = defaults[item.value]
     }
     apiKeyBaseUrl.value = adaptiveBaseUrls.value.chat_completions
     return
   }
-  apiKeyBaseUrl.value = defaultCNBaseUrl(form.platform, accountMode.value, protocol)
+  apiKeyBaseUrl.value = defaultCNBaseUrl(form.platform, currentOpenCodeOrCNMode(), protocol)
 })
 // 点击预设端点：同时回填 base url、账号类型与协议。
 function onCnPresetSelect(preset: { mode: CnAccountMode; protocol: CnApiProtocol; url: string }) {
@@ -4199,7 +4327,7 @@ function onCnPresetSelect(preset: { mode: CnAccountMode; protocol: CnApiProtocol
 
 const syncPreviewCredentials = computed(() => {
   if (!apiKeyValue.value) return undefined
-  const baseUrl = isCNPlatform.value && apiProtocol.value === 'adaptive'
+  const baseUrl = isMultiProtocolPlatform.value && apiProtocol.value === 'adaptive'
     ? adaptiveBaseUrls.value.chat_completions.trim() || apiKeyBaseUrl.value.trim()
     : apiKeyBaseUrl.value.trim()
   const modelMapping = buildModelMappingObject(
@@ -4704,8 +4832,9 @@ watch(
   () => form.platform,
   (newPlatform) => {
     // Reset base URL based on platform
-    if (isCNProviderPlatform(newPlatform)) {
-      apiKeyBaseUrl.value = defaultCNBaseUrl(newPlatform, accountMode.value, apiProtocol.value)
+    if (isCNProviderPlatform(newPlatform) || newPlatform === 'opencode_go') {
+      const mode = newPlatform === 'opencode_go' ? openCodeAccountMode.value : accountMode.value
+      apiKeyBaseUrl.value = defaultCNBaseUrl(newPlatform, mode, apiProtocol.value)
     } else {
       apiKeyBaseUrl.value =
         (newPlatform === 'openai')
@@ -5179,7 +5308,9 @@ const resetForm = () => {
   accountCategory.value = 'oauth-based'
   addMethod.value = 'oauth'
   accountMode.value = 'payg'
+  openCodeAccountMode.value = 'zen'
   apiProtocol.value = 'adaptive'
+  openCodeGoProtocolRules.value = cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules('zen'))
   adaptiveBaseUrls.value = { chat_completions: '', anthropic: '', responses: '' }
   apiKeyBaseUrl.value = 'https://api.anthropic.com'
   apiKeyValue.value = ''
@@ -5654,11 +5785,14 @@ const handleSubmit = async () => {
   // 国产供应商：账号模式 + 协议 + 对应端点写入凭据；后端按 account_mode 路由
   // 额度/余额探测，按 api_protocol 路由转发端点与格式。注意 CN apikey 走本函数
   // 的通用路径（直接 doCreateAccount），不经过 createAccountAndFinish。
-  if (isCNProviderPlatform(form.platform)) {
-    credentials.account_mode = accountMode.value
+  if (isCNProviderPlatform(form.platform) || form.platform === 'opencode_go') {
+    credentials.account_mode = form.platform === 'opencode_go' ? openCodeAccountMode.value : accountMode.value
     credentials.api_protocol = apiProtocol.value
     if (apiProtocol.value === 'adaptive') {
-      const defaults = defaultCNAdaptiveBaseUrls(form.platform, accountMode.value)
+      const defaults = defaultCNAdaptiveBaseUrls(
+        form.platform,
+        form.platform === 'opencode_go' ? openCodeAccountMode.value : accountMode.value
+      )
       const protocolBaseUrls: Record<string, string> = {}
       for (const item of cnAdaptiveProtocolOptions.value) {
         protocolBaseUrls[item.value] = (adaptiveBaseUrls.value[item.value] || defaults[item.value]).trim()
@@ -5667,7 +5801,7 @@ const handleSubmit = async () => {
       credentials.base_url = protocolBaseUrls.chat_completions
     }
     const resolvedCNBase = (
-      apiKeyBaseUrl.value.trim() || defaultCNBaseUrl(form.platform, accountMode.value, apiProtocol.value)
+      apiKeyBaseUrl.value.trim() || defaultCNBaseUrl(form.platform, currentOpenCodeOrCNMode(), apiProtocol.value)
     ).trim()
     if (apiProtocol.value !== 'adaptive' && resolvedCNBase) {
       credentials.base_url = resolvedCNBase
@@ -5677,6 +5811,9 @@ const handleSubmit = async () => {
       if (zhipuOrganization.value.trim()) credentials.zhipu_organization = zhipuOrganization.value.trim()
       if (zhipuProject.value.trim()) credentials.zhipu_project = zhipuProject.value.trim()
     }
+    if (form.platform === 'opencode_go') {
+      applyOpenCodeGoProtocolRules(credentials, openCodeGoProtocolRules.value, 'create')
+    }
   }
 
   // Add model mapping if configured（OpenAI 开启自动透传时不应用）

frontend/src/components/account/EditAccountModal.vue

@@ -53,7 +53,7 @@
             @select="editBaseUrl = $event"
           />
           <CnBaseUrlPresets
-            v-if="isCNApiKeyAccount"
+            v-if="isCNApiKeyAccount && account.platform !== 'opencode_go'"
             class="mt-2"
             :platform="cnPresetPlatform"
             :mode="editAccountMode"
@@ -76,8 +76,60 @@
             {{ t('admin.accounts.cnProviders.apiProtocol.responsesFallbackDesc') }}
           </p>
         </div>
+        <!-- OpenCode Zen vs GO -->
+        <div v-if="isCNApiKeyAccount && account.platform === 'opencode_go'">
+          <label class="input-label">{{ t('admin.accounts.cnProviders.accountMode.title') }}</label>
+          <div class="mt-2 grid grid-cols-1 gap-3 sm:grid-cols-2">
+            <button
+              type="button"
+              @click="editOpenCodeAccountMode = 'zen'"
+              :class="[
+                'flex items-center gap-3 rounded-lg border-2 p-3 text-left transition-all',
+                editOpenCodeAccountMode === 'zen'
+                  ? 'border-amber-500 bg-amber-50 dark:bg-amber-900/20'
+                  : 'border-gray-200 hover:border-gray-400 dark:border-dark-600 dark:hover:border-gray-600'
+              ]"
+            >
+              <div
+                :class="[
+                  'flex h-8 w-8 shrink-0 items-center justify-center rounded-lg',
+                  editOpenCodeAccountMode === 'zen' ? 'bg-amber-500 text-white' : 'bg-gray-100 text-gray-500 dark:bg-dark-600 dark:text-gray-400'
+                ]"
+              >
+                <Icon name="creditCard" size="sm" />
+              </div>
+              <div>
+                <span class="block text-sm font-medium text-gray-900 dark:text-white">{{ t('admin.accounts.opencodeGo.accountMode.zen') }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.accounts.opencodeGo.accountMode.zenDesc') }}</span>
+              </div>
+            </button>
+            <button
+              type="button"
+              @click="editOpenCodeAccountMode = 'go'"
+              :class="[
+                'flex items-center gap-3 rounded-lg border-2 p-3 text-left transition-all',
+                editOpenCodeAccountMode === 'go'
+                  ? 'border-amber-500 bg-amber-50 dark:bg-amber-900/20'
+                  : 'border-gray-200 hover:border-gray-400 dark:border-dark-600 dark:hover:border-gray-600'
+              ]"
+            >
+              <div
+                :class="[
+                  'flex h-8 w-8 shrink-0 items-center justify-center rounded-lg',
+                  editOpenCodeAccountMode === 'go' ? 'bg-amber-500 text-white' : 'bg-gray-100 text-gray-500 dark:bg-dark-600 dark:text-gray-400'
+                ]"
+              >
+                <Icon name="bolt" size="sm" />
+              </div>
+              <div>
+                <span class="block text-sm font-medium text-gray-900 dark:text-white">{{ t('admin.accounts.opencodeGo.accountMode.go') }}</span>
+                <span class="text-xs text-gray-500 dark:text-gray-400">{{ t('admin.accounts.opencodeGo.accountMode.goDesc') }}</span>
+              </div>
+            </button>
+          </div>
+        </div>
         <!-- Account Mode Selection (CN providers) -->
-        <div v-if="isCNApiKeyAccount">
+        <div v-if="isCNApiKeyAccount && account.platform !== 'opencode_go'">
           <label class="input-label">{{ t('admin.accounts.cnProviders.accountMode.title') }}</label>
           <div class="mt-2 flex flex-wrap gap-2">
             <button
@@ -97,7 +149,7 @@
           </div>
           <p class="input-hint">{{ t(`admin.accounts.cnProviders.accountMode.${editAccountMode}Desc`) }}</p>
         </div>
-        <!-- API Protocol Selection (CN providers) -->
+        <!-- API Protocol Selection (CN providers / OpenCode) -->
         <div v-if="isCNApiKeyAccount">
           <label class="input-label">{{ t('admin.accounts.cnProviders.apiProtocol.title') }}</label>
           <div class="mt-2 flex flex-wrap gap-2">
@@ -118,6 +170,11 @@
           </div>
           <p class="input-hint">{{ t(`admin.accounts.cnProviders.apiProtocol.${cnProtocolDescKey}Desc`) }}</p>
         </div>
+        <OpenCodeGoProtocolRulesEditor
+          v-if="account.platform === 'opencode_go' && editApiProtocol === 'adaptive'"
+          v-model:rows="editOpenCodeGoProtocolRules"
+          :plan="editOpenCodeAccountMode"
+        />
         <!-- Zhipu 团队版 Coding Plan：组织/项目 ID（可选，填写后用量查询走团队版端点） -->
         <div v-if="account.platform === 'zhipu' && editAccountMode === 'coding'">
           <div class="flex items-center">
@@ -2995,15 +3052,21 @@ import ModelWhitelistSelector from '@/components/account/ModelWhitelistSelector.
 import QuotaLimitCard from '@/components/account/QuotaLimitCard.vue'
 import GrokBaseUrlPresets from '@/components/account/GrokBaseUrlPresets.vue'
 import CnBaseUrlPresets from '@/components/account/CnBaseUrlPresets.vue'
+import OpenCodeGoProtocolRulesEditor from '@/components/account/OpenCodeGoProtocolRulesEditor.vue'
 import HeaderOverrideEditor from '@/components/account/HeaderOverrideEditor.vue'
 import OllamaCloudUsageSettings from '@/components/account/OllamaCloudUsageSettings.vue'
 import {
   applyAntigravityProjectID,
   applyHeaderOverride,
   applyInterceptWarmup,
+  applyOpenCodeGoProtocolRules,
   applyPlanType,
   buildPlanTypeOptions,
+  cloneOpenCodeGoProtocolRules,
+  defaultOpenCodeProtocolRules,
+  parseOpenCodeGoProtocolRules,
   readPlanType,
+  resolveOpenCodeAccountMode,
   isCustomGrokBaseUrl,
   isHeaderOverrideCapable,
   splitHeaderOverridesObject,
@@ -3018,7 +3081,9 @@ import {
   type CnApiProtocol,
   type CnNativeApiProtocol,
   type CnProviderPlatform,
-  type HeaderOverrideRow
+  type HeaderOverrideRow,
+  type OpenCodeAccountMode,
+  type OpenCodeGoProtocolRule
 } from '@/components/account/credentialsBuilder'
 import {
   formatDateTime,
@@ -3122,7 +3187,9 @@ const editApiKey = ref('')
 // account_mode 决定额度/余额监控路径，api_protocol 决定转发端点与格式；
 // 二者均可修正（早期创建的账号可能存错默认值），切换时重置 base_url 预置。
 const isCNApiKeyAccount = computed(
-  () => props.account?.type === 'apikey' && isCNProviderPlatform(props.account.platform)
+  () =>
+    props.account?.type === 'apikey' &&
+    (isCNProviderPlatform(props.account.platform) || props.account.platform === 'opencode_go')
 )
 // CnBaseUrlPresets 的 platform prop 是平台字面量联合类型，模板里不能写
 // `as` 断言（其中的 `|` 会被 eslint 误判为 Vue2 filter 语法），经此 computed 传递。
@@ -3133,8 +3200,17 @@ const cnPresetPlatform = computed<CnProviderPlatform>(() => {
   }
   return 'kimi'
 })
+const adaptivePresetPlatform = computed<CnProviderPlatform | 'opencode_go'>(() => {
+  if (props.account?.platform === 'opencode_go') return 'opencode_go'
+  return cnPresetPlatform.value
+})
 const editApiProtocol = ref<CnApiProtocol>('adaptive')
+const editOpenCodeGoProtocolRules = ref<OpenCodeGoProtocolRule[]>(cloneOpenCodeGoProtocolRules())
 const editAccountMode = ref<CnAccountMode>('payg')
+const editOpenCodeAccountMode = ref<OpenCodeAccountMode>('go')
+function currentOpenCodeOrCNMode(): CnAccountMode | OpenCodeAccountMode {
+  return props.account?.platform === 'opencode_go' ? editOpenCodeAccountMode.value : editAccountMode.value
+}
 // 智谱团队版 Coding Plan：组织/项目 ID，写入 credentials 供额度探测切换团队端点
 const editZhipuOrganization = ref('')
 const editZhipuProject = ref('')
@@ -3182,7 +3258,7 @@ const editAdaptiveProtocolOptions = computed<Array<{ value: CnNativeApiProtocol;
 watch(editApiProtocol, (protocol, previousProtocol) => {
   if (!isCNApiKeyAccount.value || syncingForm.value) return
   if (protocol === 'adaptive') {
-    const defaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, editAccountMode.value)
+    const defaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, currentOpenCodeOrCNMode())
     for (const item of editAdaptiveProtocolOptions.value) {
       if (!editAdaptiveBaseUrls.value[item.value]) editAdaptiveBaseUrls.value[item.value] = defaults[item.value]
     }
@@ -3194,13 +3270,14 @@ watch(editApiProtocol, (protocol, previousProtocol) => {
   }
   if (previousProtocol === 'adaptive') {
     editBaseUrl.value = editAdaptiveBaseUrls.value[protocol] ||
-      defaultCNBaseUrl(props.account!.platform, editAccountMode.value, protocol)
+      defaultCNBaseUrl(props.account!.platform, currentOpenCodeOrCNMode(), protocol)
     return
   }
-  editBaseUrl.value = defaultCNBaseUrl(props.account!.platform, editAccountMode.value, protocol)
+  editBaseUrl.value = defaultCNBaseUrl(props.account!.platform, currentOpenCodeOrCNMode(), protocol)
 })
 watch(editAccountMode, (mode, previousMode) => {
   if (!isCNApiKeyAccount.value || syncingForm.value) return
+  if (props.account?.platform === 'opencode_go') return
   // deepseek 无 coding 套餐：防御性回退（UI 已隐藏该选项）。
   const effectiveMode = props.account!.platform === 'deepseek' && mode === 'coding' ? 'payg' : mode
   if (effectiveMode !== mode) {
@@ -3208,8 +3285,8 @@ watch(editAccountMode, (mode, previousMode) => {
     return
   }
   if (editApiProtocol.value === 'adaptive') {
-    const previousDefaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, previousMode)
-    const nextDefaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, mode)
+    const previousDefaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, previousMode)
+    const nextDefaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, mode)
     for (const item of editAdaptiveProtocolOptions.value) {
       if (!editAdaptiveBaseUrls.value[item.value] || editAdaptiveBaseUrls.value[item.value] === previousDefaults[item.value]) {
         editAdaptiveBaseUrls.value[item.value] = nextDefaults[item.value]
@@ -3220,6 +3297,25 @@ watch(editAccountMode, (mode, previousMode) => {
   }
   editBaseUrl.value = defaultCNBaseUrl(props.account!.platform, mode, editApiProtocol.value)
 })
+watch(editOpenCodeAccountMode, (mode, previousMode) => {
+  if (!isCNApiKeyAccount.value || props.account?.platform !== 'opencode_go' || syncingForm.value) return
+  if (editApiProtocol.value === 'adaptive') {
+    const previousDefaults = defaultCNAdaptiveBaseUrls('opencode_go', previousMode)
+    const nextDefaults = defaultCNAdaptiveBaseUrls('opencode_go', mode)
+    for (const item of editAdaptiveProtocolOptions.value) {
+      if (!editAdaptiveBaseUrls.value[item.value] || editAdaptiveBaseUrls.value[item.value] === previousDefaults[item.value]) {
+        editAdaptiveBaseUrls.value[item.value] = nextDefaults[item.value]
+      }
+    }
+    editBaseUrl.value = editAdaptiveBaseUrls.value.chat_completions
+  } else {
+    editBaseUrl.value = defaultCNBaseUrl('opencode_go', mode, editApiProtocol.value)
+  }
+  const previousRules = JSON.stringify(defaultOpenCodeProtocolRules(previousMode))
+  if (JSON.stringify(editOpenCodeGoProtocolRules.value) === previousRules) {
+    editOpenCodeGoProtocolRules.value = cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules(mode))
+  }
+})
 const cnProtocolDescKey = computed(
   () => cnProtocolOptions.value.find(o => o.value === editApiProtocol.value)?.labelKey ?? 'chatCompletions'
 )
@@ -3728,9 +3824,10 @@ const defaultBaseUrl = computed(() => {
   if (
     props.account?.platform === 'kimi' ||
     props.account?.platform === 'zhipu' ||
-    props.account?.platform === 'deepseek'
+    props.account?.platform === 'deepseek' ||
+    props.account?.platform === 'opencode_go'
   ) {
-    return defaultCNBaseUrl(props.account.platform, editAccountMode.value, editApiProtocol.value)
+    return defaultCNBaseUrl(props.account.platform, currentOpenCodeOrCNMode(), editApiProtocol.value)
   }
   return 'https://api.anthropic.com'
 })
@@ -4105,8 +4202,12 @@ const syncFormFromAccount = (newAccount: Account | null) => {
     const credentials = newAccount.credentials as Record<string, unknown>
     // 国产供应商：读取 account_mode 与 api_protocol 作为可编辑初始值
     // （编辑弹窗允许修正两者，用于修复早期存错默认值的账号）。
-    if (isCNProviderPlatform(newAccount.platform)) {
-      editAccountMode.value = credentials.account_mode === 'coding' ? 'coding' : 'payg'
+    if (isCNProviderPlatform(newAccount.platform) || newAccount.platform === 'opencode_go') {
+      if (newAccount.platform === 'opencode_go') {
+        editOpenCodeAccountMode.value = resolveOpenCodeAccountMode(credentials.account_mode)
+      } else {
+        editAccountMode.value = credentials.account_mode === 'coding' ? 'coding' : 'payg'
+      }
       const storedProtocol = credentials.api_protocol
       editApiProtocol.value =
         storedProtocol === 'adaptive' ||
@@ -4118,7 +4219,7 @@ const syncFormFromAccount = (newAccount: Account | null) => {
       if (!cnSupportsNativeResponses(newAccount.platform) && editApiProtocol.value === 'responses') {
         editApiProtocol.value = 'chat_completions'
       }
-      const adaptiveDefaults = defaultCNAdaptiveBaseUrls(newAccount.platform, editAccountMode.value)
+      const adaptiveDefaults = defaultCNAdaptiveBaseUrls(newAccount.platform, currentOpenCodeOrCNMode())
       const storedBaseUrls = (credentials.api_base_urls as Record<string, unknown> | undefined) || {}
       const legacyBaseUrl = typeof credentials.base_url === 'string' ? credentials.base_url.trim() : ''
       const storedChatBaseUrl = typeof storedBaseUrls.chat_completions === 'string'
@@ -4154,6 +4255,11 @@ const syncFormFromAccount = (newAccount: Account | null) => {
         editZhipuOrganization.value = typeof credentials.zhipu_organization === 'string' ? credentials.zhipu_organization : ''
         editZhipuProject.value = typeof credentials.zhipu_project === 'string' ? credentials.zhipu_project : ''
       }
+      if (newAccount.platform === 'opencode_go') {
+        editOpenCodeGoProtocolRules.value =
+          parseOpenCodeGoProtocolRules(credentials.protocol_rules) ??
+          cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules(editOpenCodeAccountMode.value))
+      }
     }
     const platformDefaultUrl =
       newAccount.platform === 'openai'
@@ -4164,8 +4270,9 @@ const syncFormFromAccount = (newAccount: Account | null) => {
             ? 'https://api.x.ai/v1'
             : newAccount.platform === 'kimi' ||
                 newAccount.platform === 'zhipu' ||
-                newAccount.platform === 'deepseek'
-              ? defaultCNBaseUrl(newAccount.platform, editAccountMode.value, editApiProtocol.value)
+                newAccount.platform === 'deepseek' ||
+                newAccount.platform === 'opencode_go'
+              ? defaultCNBaseUrl(newAccount.platform, currentOpenCodeOrCNMode(), editApiProtocol.value)
               : 'https://api.anthropic.com'
     editBaseUrl.value = isCNApiKeyAccount.value && editApiProtocol.value === 'adaptive'
       ? editAdaptiveBaseUrls.value.chat_completions
@@ -4898,10 +5005,10 @@ const handleSubmit = async () => {
 
       // 国产供应商：模式与协议写入凭据（决定额度/余额探测与转发端点/格式）。
       if (isCNApiKeyAccount.value) {
-        newCredentials.account_mode = editAccountMode.value
+        newCredentials.account_mode = currentOpenCodeOrCNMode()
         newCredentials.api_protocol = editApiProtocol.value
         if (editApiProtocol.value === 'adaptive') {
-          const defaults = defaultCNAdaptiveBaseUrls(cnPresetPlatform.value, editAccountMode.value)
+          const defaults = defaultCNAdaptiveBaseUrls(adaptivePresetPlatform.value, currentOpenCodeOrCNMode())
           const protocolBaseUrls: Record<string, string> = {}
           for (const item of editAdaptiveProtocolOptions.value) {
             protocolBaseUrls[item.value] = (editAdaptiveBaseUrls.value[item.value] || defaults[item.value]).trim()
@@ -4911,6 +5018,9 @@ const handleSubmit = async () => {
         } else {
           delete newCredentials.api_base_urls
         }
+        if (props.account.platform === 'opencode_go') {
+          applyOpenCodeGoProtocolRules(newCredentials, editOpenCodeGoProtocolRules.value, 'edit')
+        }
         // 智谱团队版 Coding Plan：组织/项目 ID 写入凭据（非空才写，清空即移除回落个人版路径）
         if (props.account.platform === 'zhipu') {
           const org = editZhipuOrganization.value.trim()

frontend/src/components/account/ModelWhitelistSelector.vue

@@ -209,7 +209,8 @@ const upstreamSyncPlatforms = new Set([
   'kimi',
   'zhipu',
   'deepseek',
-  'minimax'
+  'minimax',
+  'opencode_go'
 ])
 const canSyncUpstream = computed(() => {
   if (props.accountId) {

frontend/src/components/account/OpenCodeGoProtocolRulesEditor.vue

@@ -0,0 +1,106 @@
+<template>
+  <div>
+    <div class="mb-2 flex items-center justify-between gap-2">
+      <label class="input-label mb-0">{{ t('admin.accounts.opencodeGo.protocolRules.title') }}</label>
+      <button
+        type="button"
+        class="text-xs text-primary-600 hover:text-primary-700 dark:text-primary-400"
+        @click="restoreDefaults"
+      >
+        {{ t('admin.accounts.opencodeGo.protocolRules.restoreDefaults') }}
+      </button>
+    </div>
+    <p class="input-hint mb-2">{{ t('admin.accounts.opencodeGo.protocolRules.hint') }}</p>
+    <div v-if="rows.length > 0" class="mb-2 space-y-2">
+      <div
+        v-for="(row, index) in rows"
+        :key="getRowKey(row)"
+        class="flex items-center gap-2"
+      >
+        <input
+          v-model="row.pattern"
+          type="text"
+          class="input flex-1 font-mono text-sm"
+          :placeholder="t('admin.accounts.opencodeGo.protocolRules.patternPlaceholder')"
+          :data-testid="`opencode-go-protocol-pattern-${index}`"
+        />
+        <select
+          v-model="row.protocol"
+          class="input w-44 shrink-0"
+          :data-testid="`opencode-go-protocol-select-${index}`"
+        >
+          <option value="chat_completions">
+            {{ t('admin.accounts.cnProviders.apiProtocol.chatCompletions') }}
+          </option>
+          <option value="responses">
+            {{ t('admin.accounts.cnProviders.apiProtocol.responses') }}
+          </option>
+          <option value="anthropic">
+            {{ t('admin.accounts.cnProviders.apiProtocol.anthropic') }}
+          </option>
+        </select>
+        <button
+          type="button"
+          class="rounded-lg p-2 text-red-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20"
+          :aria-label="t('admin.accounts.opencodeGo.protocolRules.remove')"
+          @click="removeRow(index)"
+        >
+          <Icon name="trash" size="sm" />
+        </button>
+      </div>
+    </div>
+    <div
+      class="mb-2 flex items-center gap-2 rounded-lg border border-dashed border-gray-200 bg-gray-50 px-3 py-2 text-xs text-gray-500 dark:border-dark-600 dark:bg-dark-800/60 dark:text-gray-400"
+      data-testid="opencode-go-protocol-fallback"
+    >
+      <span class="flex-1 font-mono">*</span>
+      <span>{{ t('admin.accounts.opencodeGo.protocolRules.fallback') }}</span>
+    </div>
+    <button
+      type="button"
+      class="w-full rounded-lg border-2 border-dashed border-gray-300 px-4 py-2 text-gray-600 transition-colors hover:border-gray-400 hover:text-gray-700 dark:border-dark-500 dark:text-gray-400 dark:hover:border-dark-400 dark:hover:text-gray-300"
+      data-testid="opencode-go-protocol-add-rule"
+      @click="addRow"
+    >
+      {{ t('admin.accounts.opencodeGo.protocolRules.add') }}
+    </button>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useI18n } from 'vue-i18n'
+import Icon from '@/components/icons/Icon.vue'
+import { createStableObjectKeyResolver } from '@/utils/stableObjectKey'
+import {
+  cloneOpenCodeGoProtocolRules,
+  defaultOpenCodeProtocolRules,
+  type OpenCodeAccountMode,
+  type OpenCodeGoProtocolRule
+} from '@/components/account/credentialsBuilder'
+
+const props = withDefaults(defineProps<{
+  rows: OpenCodeGoProtocolRule[]
+  plan?: OpenCodeAccountMode
+}>(), {
+  plan: 'go'
+})
+
+const emit = defineEmits<{
+  (e: 'update:rows', rows: OpenCodeGoProtocolRule[]): void
+}>()
+
+const { t } = useI18n()
+const getRowKey = createStableObjectKeyResolver<OpenCodeGoProtocolRule>('opencode-go-protocol-rule')
+
+const addRow = () => {
+  emit('update:rows', [...props.rows, { pattern: '', protocol: 'chat_completions' }])
+}
+
+const removeRow = (index: number) => {
+  emit('update:rows', props.rows.filter((_, i) => i !== index))
+}
+
+const restoreDefaults = () => {
+  emit('update:rows', cloneOpenCodeGoProtocolRules(defaultOpenCodeProtocolRules(props.plan)))
+}
+</script>

frontend/src/components/account/__tests__/CreateAccountModal.spec.ts

@@ -445,6 +445,65 @@ describe('CreateAccountModal OpenAI long-context billing', () => {
     expect(probeUpstreamBillingMock).not.toHaveBeenCalled()
   })
 
+  it('submits OpenCode Zen default protocol rules with adaptive endpoints', async () => {
+    const wrapper = mountModal()
+    await selectButtonByText(wrapper, 'OpenCode')
+    await wrapper.get('form#create-account-form input[type="text"]').setValue('oc')
+    await wrapper.get('form#create-account-form input[type="password"]').setValue('sk-opencode-zen')
+
+    await wrapper.get('form#create-account-form').trigger('submit.prevent')
+    await flushPromises()
+
+    expect(createAccountMock).toHaveBeenCalledTimes(1)
+    expect(createAccountMock.mock.calls[0]?.[0]?.credentials).toMatchObject({
+      account_mode: 'zen',
+      api_protocol: 'adaptive',
+      base_url: 'https://opencode.ai/zen/v1',
+      api_base_urls: {
+        chat_completions: 'https://opencode.ai/zen/v1',
+        anthropic: 'https://opencode.ai/zen',
+        responses: 'https://opencode.ai/zen/v1'
+      },
+      protocol_rules: [
+        { pattern: 'grok-*', protocol: 'responses' },
+        { pattern: 'gpt-*', protocol: 'responses' },
+        { pattern: 'muse-spark-*', protocol: 'responses' },
+        { pattern: 'claude-*', protocol: 'anthropic' },
+        { pattern: 'qwen*', protocol: 'anthropic' }
+      ]
+    })
+  })
+
+  it('submits OpenCode GO endpoints after switching account type', async () => {
+    const wrapper = mountModal()
+    await selectButtonByText(wrapper, 'OpenCode')
+    await selectButtonByText(wrapper, 'admin.accounts.opencodeGo.accountMode.go')
+    await wrapper.get('form#create-account-form input[type="text"]').setValue('oc-go')
+    await wrapper.get('form#create-account-form input[type="password"]').setValue('sk-opencode-go')
+
+    await wrapper.get('form#create-account-form').trigger('submit.prevent')
+    await flushPromises()
+
+    expect(createAccountMock).toHaveBeenCalledTimes(1)
+    expect(createAccountMock.mock.calls[0]?.[0]?.credentials).toMatchObject({
+      account_mode: 'go',
+      api_protocol: 'adaptive',
+      base_url: 'https://opencode.ai/zen/go/v1',
+      api_base_urls: {
+        chat_completions: 'https://opencode.ai/zen/go/v1',
+        anthropic: 'https://opencode.ai/zen/go',
+        responses: 'https://opencode.ai/zen/go/v1'
+      },
+      protocol_rules: [
+        { pattern: 'grok-*', protocol: 'responses' },
+        { pattern: 'gpt-*', protocol: 'responses' },
+        { pattern: 'muse-spark-*', protocol: 'responses' },
+        { pattern: 'minimax-*', protocol: 'anthropic' },
+        { pattern: 'qwen*', protocol: 'anthropic' }
+      ]
+    })
+  })
+
   it('submits adaptive Kimi protocol endpoints', async () => {
     const wrapper = mountModal()
     await selectButtonByText(wrapper, 'Kimi')

frontend/src/components/account/__tests__/EditAccountModal.spec.ts

@@ -445,6 +445,80 @@ describe('EditAccountModal', () => {
     })
   })
 
+  it('preserves OpenCode Zen account type and endpoints on submit', async () => {
+    const account = buildAccount()
+    account.platform = 'opencode_go'
+    account.credentials = {
+      api_key: 'sk-opencode',
+      account_mode: 'zen',
+      api_protocol: 'adaptive',
+      base_url: 'https://opencode.ai/zen/v1',
+      api_base_urls: {
+        chat_completions: 'https://opencode.ai/zen/v1',
+        anthropic: 'https://opencode.ai/zen',
+        responses: 'https://opencode.ai/zen/v1'
+      },
+      protocol_rules: [
+        { pattern: 'grok-*', protocol: 'responses' },
+        { pattern: 'gpt-*', protocol: 'responses' },
+        { pattern: 'muse-spark-*', protocol: 'responses' },
+        { pattern: 'claude-*', protocol: 'anthropic' },
+        { pattern: 'qwen*', protocol: 'anthropic' }
+      ]
+    }
+    updateAccountMock.mockReset().mockResolvedValue(account)
+    checkMixedChannelRiskMock.mockReset().mockResolvedValue({ has_risk: false })
+
+    const wrapper = mountModal(account)
+    await wrapper.get('form#edit-account-form').trigger('submit.prevent')
+
+    expect(updateAccountMock).toHaveBeenCalledTimes(1)
+    expect(updateAccountMock.mock.calls[0]?.[1]?.credentials).toMatchObject({
+      account_mode: 'zen',
+      api_protocol: 'adaptive',
+      base_url: 'https://opencode.ai/zen/v1',
+      api_base_urls: {
+        chat_completions: 'https://opencode.ai/zen/v1',
+        anthropic: 'https://opencode.ai/zen',
+        responses: 'https://opencode.ai/zen/v1'
+      },
+      protocol_rules: [
+        { pattern: 'grok-*', protocol: 'responses' },
+        { pattern: 'gpt-*', protocol: 'responses' },
+        { pattern: 'muse-spark-*', protocol: 'responses' },
+        { pattern: 'claude-*', protocol: 'anthropic' },
+        { pattern: 'qwen*', protocol: 'anthropic' }
+      ]
+    })
+  })
+
+  it('treats a legacy OpenCode account without account_mode as GO', async () => {
+    const account = buildAccount()
+    account.platform = 'opencode_go'
+    account.credentials = {
+      api_key: 'sk-opencode',
+      api_protocol: 'adaptive',
+      base_url: 'https://opencode.ai/zen/go/v1',
+      api_base_urls: {
+        chat_completions: 'https://opencode.ai/zen/go/v1',
+        anthropic: 'https://opencode.ai/zen/go',
+        responses: 'https://opencode.ai/zen/go/v1'
+      }
+    }
+    updateAccountMock.mockReset().mockResolvedValue(account)
+    checkMixedChannelRiskMock.mockReset().mockResolvedValue({ has_risk: false })
+
+    const wrapper = mountModal(account)
+    await wrapper.get('form#edit-account-form').trigger('submit.prevent')
+
+    expect(updateAccountMock).toHaveBeenCalledTimes(1)
+    expect(updateAccountMock.mock.calls[0]?.[1]?.credentials).toMatchObject({
+      account_mode: 'go',
+      api_protocol: 'adaptive',
+      base_url: 'https://opencode.ai/zen/go/v1'
+    })
+  })
+
   it('preserves adaptive Kimi Responses endpoint on submit', async () => {
     const account = buildAccount()
     account.platform = 'kimi'

frontend/src/components/account/__tests__/ModelWhitelistSelector.spec.ts

@@ -219,4 +219,22 @@ describe('ModelWhitelistSelector', () => {
     expect(wrapper.emitted('upstream-synced')).toEqual([[]])
     expect(wrapper.emitted('update:modelValue')).toEqual([[['x-preview-f-free']]])
   })
+
+  it('shows the upstream sync button for OpenCode Go create-account credentials', () => {
+    const wrapper = mountSelector({
+      platform: 'opencode_go',
+      syncCredentials: {
+        platform: 'opencode_go',
+        type: 'apikey',
+        base_url: 'https://opencode.ai/zen/go/v1',
+        api_key: 'sk-test',
+      },
+    })
+    const syncButton = wrapper
+      .findAll('button')
+      .find(button => button.text() === 'admin.accounts.syncUpstreamModels')
+
+    expect(syncButton).toBeDefined()
+    expect(syncButton?.exists()).toBe(true)
+  })
 })

frontend/src/components/account/__tests__/credentialsBuilder.spec.ts

@@ -3,16 +3,24 @@ import {
   ANTIGRAVITY_PROJECT_ID_CREDENTIAL_KEY,
   HEADER_OVERRIDE_ENABLED_CREDENTIAL_KEY,
   HEADER_OVERRIDES_CREDENTIAL_KEY,
+  OPENCODE_GO_PROTOCOL_RULES_KEY,
   applyAntigravityProjectID,
   applyHeaderOverride,
   applyInterceptWarmup,
+  applyOpenCodeGoProtocolRules,
   applyPlanType,
   buildHeaderOverridesObject,
   buildPlanTypeOptions,
+  cloneOpenCodeGoProtocolRules,
+  cnQuotaCellVisible,
+  defaultCNBaseUrl,
+  defaultOpenCodeProtocolRules,
   isCustomGrokBaseUrl,
+  resolveOpenCodeAccountMode,
   isHeaderOverrideCapable,
   GROK_BASE_URL_PRESETS,
   parseHeaderOverridesJson,
+  parseOpenCodeGoProtocolRules,
   planTypeDisplayLabel,
   readPlanType,
   serializeHeaderOverrideRows,
@@ -98,6 +106,53 @@ describe('applyAntigravityProjectID', () => {
   })
 })
 
+describe('openCodeGo protocol rules', () => {
+  it('resolves missing OpenCode account_mode as GO and zen as Zen', () => {
+    expect(resolveOpenCodeAccountMode(undefined)).toBe('go')
+    expect(resolveOpenCodeAccountMode('coding')).toBe('go')
+    expect(resolveOpenCodeAccountMode('zen')).toBe('zen')
+    expect(resolveOpenCodeAccountMode('go')).toBe('go')
+  })
+
+  it('uses Zen vs GO default endpoints and protocol rules', () => {
+    expect(defaultCNBaseUrl('opencode_go', 'zen', 'adaptive')).toBe('https://opencode.ai/zen/v1')
+    expect(defaultCNBaseUrl('opencode_go', 'zen', 'anthropic')).toBe('https://opencode.ai/zen')
+    expect(defaultCNBaseUrl('opencode_go', 'go', 'adaptive')).toBe('https://opencode.ai/zen/go/v1')
+    expect(defaultCNBaseUrl('opencode_go', 'go', 'anthropic')).toBe('https://opencode.ai/zen/go')
+    expect(defaultOpenCodeProtocolRules('zen').some(rule => rule.pattern === 'claude-*')).toBe(true)
+    expect(defaultOpenCodeProtocolRules('go').some(rule => rule.pattern === 'minimax-*')).toBe(true)
+    expect(cnQuotaCellVisible('opencode_go', 'zen')).toBe(false)
+    expect(cnQuotaCellVisible('opencode_go', 'go')).toBe(true)
+    expect(cnQuotaCellVisible('opencode_go', '')).toBe(true)
+  })
+
+  it('parses stored rules and skips invalid entries', () => {
+    expect(parseOpenCodeGoProtocolRules(null)).toBeNull()
+    expect(parseOpenCodeGoProtocolRules([])).toEqual([])
+    expect(
+      parseOpenCodeGoProtocolRules([
+        { pattern: 'grok-*', protocol: 'responses' },
+        { pattern: '', protocol: 'anthropic' },
+        { pattern: 'qwen*', protocol: 'adaptive' },
+        { pattern: 'minimax-*', protocol: 'anthropic' }
+      ])
+    ).toEqual([
+      { pattern: 'grok-*', protocol: 'responses' },
+      { pattern: 'minimax-*', protocol: 'anthropic' }
+    ])
+  })
+
+  it('writes lowercase patterns on create and keeps an empty list on edit', () => {
+    const created: Record<string, unknown> = {}
+    applyOpenCodeGoProtocolRules(created, cloneOpenCodeGoProtocolRules(), 'create')
+    expect(created[OPENCODE_GO_PROTOCOL_RULES_KEY]).toEqual(cloneOpenCodeGoProtocolRules())
+
+    const edited: Record<string, unknown> = { api_key: 'sk' }
+    applyOpenCodeGoProtocolRules(edited, [], 'edit')
+    expect(edited[OPENCODE_GO_PROTOCOL_RULES_KEY]).toEqual([])
+  })
+})
+
 describe('isHeaderOverrideCapable', () => {
   it('anthropic/openai only support apikey accounts', () => {
     expect(isHeaderOverrideCapable('anthropic', 'apikey')).toBe(true)
@@ -107,7 +162,7 @@ describe('isHeaderOverrideCapable', () => {
   })
 
   it('kimi/zhipu/deepseek only support apikey accounts', () => {
-    for (const platform of ['kimi', 'zhipu', 'deepseek', 'minimax']) {
+    for (const platform of ['kimi', 'zhipu', 'deepseek', 'minimax', 'opencode_go']) {
       expect(isHeaderOverrideCapable(platform, 'apikey')).toBe(true)
       expect(isHeaderOverrideCapable(platform, 'oauth')).toBe(false)
     }

frontend/src/components/account/credentialsBuilder.ts

@@ -43,7 +43,8 @@ export function isHeaderOverrideCapable(platform: string, type: string): boolean
     platform === 'kimi' ||
     platform === 'zhipu' ||
     platform === 'deepseek' ||
-    platform === 'minimax'
+    platform === 'minimax' ||
+    platform === 'opencode_go'
   ) {
     return type === 'apikey'
   }
@@ -256,6 +257,7 @@ export const GROK_BASE_URL_PRESETS: GrokBaseUrlPreset[] = [
 // 两者正交。同协议请求零转换直通，跨协议组合才走转换链。
 
 export type CnAccountMode = 'payg' | 'coding'
+export type OpenCodeAccountMode = 'zen' | 'go'
 export type CnProviderPlatform = 'kimi' | 'zhipu' | 'deepseek' | 'minimax'
 
 /** deepseek / kimi / minimax 支持原生 responses；adaptive 会按入站协议选择原生端点。 */
@@ -268,7 +270,93 @@ export function isCNProviderPlatform(platform: string): platform is CnProviderPl
 
 /** DeepSeek、Kimi 与 MiniMax 提供原生 Responses 端点。 */
 export function cnSupportsNativeResponses(platform: string): boolean {
-  return platform === 'deepseek' || platform === 'kimi' || platform === 'minimax'
+  return platform === 'deepseek' || platform === 'kimi' || platform === 'minimax' || platform === 'opencode_go'
+}
+
+export const OPENCODE_GO_BASE_URL = 'https://opencode.ai/zen/go/v1'
+export const OPENCODE_GO_ANTHROPIC_BASE_URL = 'https://opencode.ai/zen/go'
+export const OPENCODE_ZEN_BASE_URL = 'https://opencode.ai/zen/v1'
+export const OPENCODE_ZEN_ANTHROPIC_BASE_URL = 'https://opencode.ai/zen'
+
+export function isOpenCodeGoPlatform(platform: string): boolean {
+  return platform === 'opencode_go'
+}
+
+export const OPENCODE_GO_PROTOCOL_RULES_KEY = 'protocol_rules'
+
+export interface OpenCodeGoProtocolRule {
+  pattern: string
+  protocol: CnNativeApiProtocol
+}
+
+export const DEFAULT_OPENCODE_GO_PROTOCOL_RULES: OpenCodeGoProtocolRule[] = [
+  { pattern: 'grok-*', protocol: 'responses' },
+  { pattern: 'gpt-*', protocol: 'responses' },
+  { pattern: 'muse-spark-*', protocol: 'responses' },
+  { pattern: 'minimax-*', protocol: 'anthropic' },
+  { pattern: 'qwen*', protocol: 'anthropic' }
+]
+
+export const DEFAULT_OPENCODE_ZEN_PROTOCOL_RULES: OpenCodeGoProtocolRule[] = [
+  { pattern: 'grok-*', protocol: 'responses' },
+  { pattern: 'gpt-*', protocol: 'responses' },
+  { pattern: 'muse-spark-*', protocol: 'responses' },
+  { pattern: 'claude-*', protocol: 'anthropic' },
+  { pattern: 'qwen*', protocol: 'anthropic' }
+]
+
+export function resolveOpenCodeAccountMode(value: unknown): OpenCodeAccountMode {
+  return value === 'zen' ? 'zen' : 'go'
+}
+
+export function defaultOpenCodeProtocolRules(mode: OpenCodeAccountMode = 'go'): OpenCodeGoProtocolRule[] {
+  return mode === 'zen' ? DEFAULT_OPENCODE_ZEN_PROTOCOL_RULES : DEFAULT_OPENCODE_GO_PROTOCOL_RULES
+}
+
+export function cloneOpenCodeGoProtocolRules(
+  rules: OpenCodeGoProtocolRule[] = DEFAULT_OPENCODE_GO_PROTOCOL_RULES
+): OpenCodeGoProtocolRule[] {
+  return rules.map(rule => ({ pattern: rule.pattern, protocol: rule.protocol }))
+}
+
+function isNativeOpenCodeGoProtocol(value: unknown): value is CnNativeApiProtocol {
+  return value === 'chat_completions' || value === 'anthropic' || value === 'responses'
+}
+
+export function parseOpenCodeGoProtocolRules(raw: unknown): OpenCodeGoProtocolRule[] | null {
+  if (raw == null) return null
+  if (!Array.isArray(raw)) return cloneOpenCodeGoProtocolRules()
+  const rules: OpenCodeGoProtocolRule[] = []
+  for (const item of raw) {
+    if (!item || typeof item !== 'object') continue
+    const pattern = typeof (item as { pattern?: unknown }).pattern === 'string'
+      ? (item as { pattern: string }).pattern.trim()
+      : ''
+    const protocol = (item as { protocol?: unknown }).protocol
+    if (!pattern || !isNativeOpenCodeGoProtocol(protocol)) continue
+    rules.push({ pattern, protocol })
+  }
+  return rules
+}
+
+export function applyOpenCodeGoProtocolRules(
+  credentials: Record<string, unknown>,
+  rules: OpenCodeGoProtocolRule[],
+  mode: 'create' | 'edit'
+): void {
+  const serialized = rules
+    .map(rule => ({
+      pattern: rule.pattern.trim().toLowerCase(),
+      protocol: rule.protocol
+    }))
+    .filter(rule => rule.pattern.length > 0 && isNativeOpenCodeGoProtocol(rule.protocol))
+  if (serialized.length > 0 || mode === 'edit') {
+    credentials[OPENCODE_GO_PROTOCOL_RULES_KEY] = serialized
+  }
+}
+
+export function isMultiProtocolApiKeyPlatform(platform: string): boolean {
+  return platform === 'kimi' || platform === 'zhipu' || platform === 'deepseek' || platform === 'minimax' || platform === 'opencode_go'
 }
 
 export interface CnBaseUrlPreset {
@@ -319,7 +407,7 @@ export const CN_BASE_URL_PRESETS: Record<CnProviderPlatform, CnBaseUrlPreset[]>
 /** 返回指定供应商 + 账号类型 + API 协议的默认 base url。 */
 export function defaultCNBaseUrl(
   platform: string,
-  mode: CnAccountMode,
+  mode: CnAccountMode | OpenCodeAccountMode,
   protocol: CnApiProtocol = 'chat_completions'
 ): string {
   if (protocol === 'anthropic') {
@@ -332,6 +420,8 @@ export function defaultCNBaseUrl(
         return 'https://api.deepseek.com/anthropic'
       case 'minimax':
         return 'https://api.minimaxi.com/anthropic'
+      case 'opencode_go':
+        return mode === 'zen' ? OPENCODE_ZEN_ANTHROPIC_BASE_URL : OPENCODE_GO_ANTHROPIC_BASE_URL
       default:
         return ''
     }
@@ -348,6 +438,8 @@ export function defaultCNBaseUrl(
       return 'https://api.deepseek.com'
     case 'minimax':
       return 'https://api.minimaxi.com/v1'
+    case 'opencode_go':
+      return mode === 'zen' ? OPENCODE_ZEN_BASE_URL : OPENCODE_GO_BASE_URL
     default:
       return ''
   }
@@ -355,8 +447,8 @@ export function defaultCNBaseUrl(
 
 /** 返回自适应模式下需要配置的原生协议及其默认端点。 */
 export function defaultCNAdaptiveBaseUrls(
-  platform: CnProviderPlatform,
-  mode: CnAccountMode
+  platform: CnProviderPlatform | 'opencode_go',
+  mode: CnAccountMode | OpenCodeAccountMode
 ): Record<CnNativeApiProtocol, string> {
   return {
     chat_completions: defaultCNBaseUrl(platform, mode, 'chat_completions'),
@@ -370,6 +462,7 @@ export function defaultCNAdaptiveBaseUrls(
 // 共用，避免多处复制条件后一处改另一处漏改。
 
 export function cnQuotaCellVisible(platform: string, accountMode: string): boolean {
+  if (platform === 'opencode_go') return accountMode !== 'zen'
   return (platform === 'kimi' || platform === 'zhipu' || platform === 'minimax') && accountMode === 'coding'
 }
 

frontend/src/components/admin/monitor/MonitorFiltersBar.vue

@@ -76,6 +76,7 @@ import {
   PROVIDER_ZHIPU,
   PROVIDER_DEEPSEEK,
   PROVIDER_MINIMAX,
+  PROVIDER_OPENCODE_GO,
 } from '@/constants/channelMonitor'
 
 defineProps<{
@@ -106,6 +107,7 @@ const providerFilterOptions = computed(() => [
   { value: PROVIDER_ZHIPU, label: t('monitorCommon.providers.zhipu') },
   { value: PROVIDER_DEEPSEEK, label: t('monitorCommon.providers.deepseek') },
   { value: PROVIDER_MINIMAX, label: t('monitorCommon.providers.minimax') },
+  { value: PROVIDER_OPENCODE_GO, label: t('monitorCommon.providers.opencode_go') },
 ])
 
 const enabledFilterOptions = computed(() => [

frontend/src/components/admin/monitor/MonitorFormDialog.vue

@@ -270,6 +270,7 @@ import {
   PROVIDER_ZHIPU,
   PROVIDER_DEEPSEEK,
   PROVIDER_MINIMAX,
+  PROVIDER_OPENCODE_GO,
   API_MODE_CHAT_COMPLETIONS,
   API_MODE_RESPONSES,
   CHECK_MODE_PROBE,
@@ -281,6 +282,7 @@ import {
   DEFAULT_ZHIPU_ENDPOINT,
   DEFAULT_DEEPSEEK_ENDPOINT,
   DEFAULT_MINIMAX_ENDPOINT,
+  DEFAULT_OPENCODE_GO_ENDPOINT,
   DEFAULT_INTERVAL_SECONDS,
 } from '@/constants/channelMonitor'
 
@@ -476,6 +478,7 @@ const providerOptions = computed<ProviderOption[]>(() => [
   { value: PROVIDER_ZHIPU, label: t('monitorCommon.providers.zhipu') },
   { value: PROVIDER_DEEPSEEK, label: t('monitorCommon.providers.deepseek') },
   { value: PROVIDER_MINIMAX, label: t('monitorCommon.providers.minimax') },
+  { value: PROVIDER_OPENCODE_GO, label: t('monitorCommon.providers.opencode_go') },
 ])
 
 // 国产 provider 预填的官方 endpoint（仅探活侧；配额模式 endpoint 可留空）。
@@ -484,6 +487,7 @@ const PROVIDER_DEFAULT_ENDPOINTS: Partial<Record<Provider, string>> = {
   [PROVIDER_ZHIPU]: DEFAULT_ZHIPU_ENDPOINT,
   [PROVIDER_DEEPSEEK]: DEFAULT_DEEPSEEK_ENDPOINT,
   [PROVIDER_MINIMAX]: DEFAULT_MINIMAX_ENDPOINT,
+  [PROVIDER_OPENCODE_GO]: DEFAULT_OPENCODE_GO_ENDPOINT,
 }
 
 interface CheckModeOption {

frontend/src/components/admin/monitor/MonitorTemplateManagerDialog.vue

@@ -254,6 +254,7 @@ import {
   PROVIDER_ZHIPU,
   PROVIDER_DEEPSEEK,
   PROVIDER_MINIMAX,
+  PROVIDER_OPENCODE_GO,
   PROVIDERS,
   API_MODE_CHAT_COMPLETIONS,
   API_MODE_RESPONSES,
@@ -280,6 +281,7 @@ const providerTabs = computed<{ value: Provider; label: string }[]>(() => [
   { value: PROVIDER_ZHIPU, label: t('monitorCommon.providers.zhipu') },
   { value: PROVIDER_DEEPSEEK, label: t('monitorCommon.providers.deepseek') },
   { value: PROVIDER_MINIMAX, label: t('monitorCommon.providers.minimax') },
+  { value: PROVIDER_OPENCODE_GO, label: t('monitorCommon.providers.opencode_go') },
 ])
 
 const activeProvider = ref<Provider>(PROVIDER_ANTHROPIC)

frontend/src/components/common/PlatformIcon.vue

@@ -44,6 +44,10 @@
       d="M16.278 2c1.156 0 2.093.927 2.093 2.07v12.501a.74.74 0 00.744.709.74.74 0 00.743-.709V9.099a2.06 2.06 0 012.071-2.049A2.06 2.06 0 0124 9.1v6.561a.649.649 0 01-.652.645.649.649 0 01-.653-.645V9.1a.762.762 0 00-.766-.758.762.762 0 00-.766.758v7.472a2.037 2.037 0 01-2.048 2.026 2.037 2.037 0 01-2.048-2.026v-12.5a.785.785 0 00-.788-.753.785.785 0 00-.789.752l-.001 15.904A2.037 2.037 0 0113.441 22a2.037 2.037 0 01-2.048-2.026V18.04c0-.356.292-.645.652-.645.36 0 .652.289.652.645v1.934c0 .263.142.506.372.638.23.131.514.131.744 0a.734.734 0 00.372-.638V4.07c0-1.143.937-2.07 2.093-2.07zm-5.674 0c1.156 0 2.093.927 2.093 2.07v11.523a.648.648 0 01-.652.645.648.648 0 01-.652-.645V4.07a.785.785 0 00-.789-.78.785.785 0 00-.789.78v14.013a2.06 2.06 0 01-2.07 2.048 2.06 2.06 0 01-2.071-2.048V9.1a.762.762 0 00-.766-.758.762.762 0 00-.766.758v3.8a2.06 2.06 0 01-2.071 2.049A2.06 2.06 0 010 12.9v-1.378c0-.357.292-.646.652-.646.36 0 .653.29.653.646V12.9c0 .418.343.757.766.757s.766-.339.766-.757V9.099a2.06 2.06 0 012.07-2.048 2.06 2.06 0 012.071 2.048v8.984c0 .419.343.758.767.758.423 0 .766-.339.766-.758V4.07c0-1.143.937-2.07 2.093-2.07z"
     />
   </svg>
+  <!-- OpenCode official mark -->
+  <svg v-else-if="platform === 'opencode_go'" :class="sizeClass" viewBox="0 0 24 24" fill="currentColor" fill-rule="evenodd">
+    <path d="M16 6H8v12h8V6zm4 16H4V2h16v20z" />
+  </svg>
   <!-- DeepSeek official logo mark (whale) -->
   <svg v-else-if="platform === 'deepseek'" :class="sizeClass" viewBox="0 0 24 24" fill="currentColor">
     <path

frontend/src/components/keys/UseKeyModal.vue

@@ -1236,6 +1236,7 @@ function generateRoutedCodexFiles(
     zhipu: 'glm-4.7',
     deepseek: 'deepseek-v4-pro',
     minimax: 'MiniMax-M3',
+    opencode_go: 'glm-5.3',
     composite: 'gpt-5.5'
   }
   const preferredModel = preferredModels[platform] || ''
@@ -1250,6 +1251,7 @@ function generateRoutedCodexFiles(
     zhipu: 'Zhipu',
     deepseek: 'DeepSeek',
     minimax: 'MiniMax',
+    opencode_go: 'OpenCode',
     composite: 'Composite'
   }
   const label = labels[platform]

frontend/src/components/user/monitor/MonitorCard.vue

@@ -101,6 +101,7 @@ const PROVIDER_TINT: Record<string, string> = {
   kimi: 'text-pink-600 dark:text-pink-300',
   zhipu: 'text-indigo-600 dark:text-indigo-300',
   deepseek: 'text-teal-600 dark:text-teal-300',
+  opencode_go: 'text-amber-700 dark:text-amber-300',
 }
 
 const props = defineProps<{

frontend/src/components/user/monitor/ProviderIcon.vue

@@ -83,6 +83,11 @@ const PROVIDER_ICONS: Record<Provider, IconData> = {
       'M16.278 2c1.156 0 2.093.927 2.093 2.07v12.501a.74.74 0 00.744.709.74.74 0 00.743-.709V9.099a2.06 2.06 0 012.071-2.049A2.06 2.06 0 0124 9.1v6.561a.649.649 0 01-.652.645.649.649 0 01-.653-.645V9.1a.762.762 0 00-.766-.758.762.762 0 00-.766.758v7.472a2.037 2.037 0 01-2.048 2.026 2.037 2.037 0 01-2.048-2.026v-12.5a.785.785 0 00-.788-.753.785.785 0 00-.789.752l-.001 15.904A2.037 2.037 0 0113.441 22a2.037 2.037 0 01-2.048-2.026V18.04c0-.356.292-.645.652-.645.36 0 .652.289.652.645v1.934c0 .263.142.506.372.638.23.131.514.131.744 0a.734.734 0 00.372-.638V4.07c0-1.143.937-2.07 2.093-2.07zm-5.674 0c1.156 0 2.093.927 2.093 2.07v11.523a.648.648 0 01-.652.645.648.648 0 01-.652-.645V4.07a.785.785 0 00-.789-.78.785.785 0 00-.789.78v14.013a2.06 2.06 0 01-2.07 2.048 2.06 2.06 0 01-2.071-2.048V9.1a.762.762 0 00-.766-.758.762.762 0 00-.766.758v3.8a2.06 2.06 0 01-2.071 2.049A2.06 2.06 0 010 12.9v-1.378c0-.357.292-.646.652-.646.36 0 .653.29.653.646V12.9c0 .418.343.757.766.757s.766-.339.766-.757V9.099a2.06 2.06 0 012.07-2.048 2.06 2.06 0 012.071 2.048v8.984c0 .419.343.758.767.758.423 0 .766-.339.766-.758V4.07c0-1.143.937-2.07 2.093-2.07z',
     ],
   },
+  opencode_go: {
+    paths: [
+      'M16 6H8v12h8V6zm4 16H4V2h16v20z',
+    ],
+  },
 }
 
 const props = withDefaults(defineProps<{

frontend/src/composables/useChannelMonitorFormat.ts

@@ -22,6 +22,7 @@ import {
   PROVIDER_ZHIPU,
   PROVIDER_DEEPSEEK,
   PROVIDER_MINIMAX,
+  PROVIDER_OPENCODE_GO,
   PROVIDERS,
   STATUS_OPERATIONAL,
   STATUS_DEGRADED,
@@ -117,6 +118,8 @@ export function useChannelMonitorFormat() {
         return 'bg-teal-100 text-teal-700 dark:bg-teal-500/15 dark:text-teal-300'
       case PROVIDER_MINIMAX:
         return 'bg-rose-100 text-rose-700 dark:bg-rose-500/15 dark:text-rose-300'
+      case PROVIDER_OPENCODE_GO:
+        return 'bg-amber-100 text-amber-800 dark:bg-amber-500/15 dark:text-amber-300'
       default:
         return NEUTRAL_BADGE
     }
@@ -181,6 +184,10 @@ export function useChannelMonitorFormat() {
         return active
           ? 'border-rose-500 bg-rose-50 text-rose-700 dark:bg-rose-500/15 dark:text-rose-300 dark:border-rose-400'
           : 'border-gray-200 bg-white text-gray-600 hover:border-rose-300 hover:text-rose-700 dark:border-dark-700 dark:bg-dark-800 dark:text-gray-400 dark:hover:border-rose-500/50'
+      case PROVIDER_OPENCODE_GO:
+        return active
+          ? 'border-amber-500 bg-amber-50 text-amber-800 dark:bg-amber-500/15 dark:text-amber-300 dark:border-amber-400'
+          : 'border-gray-200 bg-white text-gray-600 hover:border-amber-300 hover:text-amber-700 dark:border-dark-700 dark:bg-dark-800 dark:text-gray-400 dark:hover:border-amber-500/50'
       default:
         return active
           ? 'border-gray-400 bg-gray-50 text-gray-700 dark:border-dark-500 dark:bg-dark-700 dark:text-gray-200'
@@ -267,6 +274,8 @@ export function providerGradient(provider: string): string {
       return 'bg-gradient-to-br from-teal-50 to-teal-100 dark:from-teal-500/10 dark:to-teal-500/20'
     case PROVIDER_MINIMAX:
       return 'bg-gradient-to-br from-rose-50 to-rose-100 dark:from-rose-500/10 dark:to-rose-500/20'
+    case PROVIDER_OPENCODE_GO:
+      return 'bg-gradient-to-br from-amber-50 to-amber-100 dark:from-amber-500/10 dark:to-amber-500/20'
     default:
       return 'bg-gradient-to-br from-gray-100 to-gray-200 dark:from-dark-700 dark:to-dark-600'
   }

frontend/src/composables/useModelWhitelist.ts

@@ -453,6 +453,18 @@ export function getModelsByPlatform(platform: string): string[] {
     case 'yi': return yiModels
     case 'moonshot':
     case 'kimi': return moonshotModels
+    case 'opencode_go': return [
+      'grok-4.6', 'gpt-5.6-luna',
+      'glm-5.3-flash', 'glm-5.3', 'glm-5.2', 'glm-5.1',
+      'kimi-k3', 'kimi-k2.7-code', 'kimi-k2.6',
+      'longcat-2.0',
+      'deepseek-v4-pro', 'deepseek-v4-flash', 'deepseek-v4-flash-vision-exp',
+      'mimo-v2.5', 'mimo-v2.5-pro',
+      'minimax-m3', 'minimax-m2.7', 'minimax-m2.5',
+      'muse-spark-1.3-contributor', 'muse-spark-1.2-contributor',
+      'qwen3.8-max', 'qwen3.8-flash', 'qwen3.7-max', 'qwen3.7-plus', 'qwen3.6-plus',
+      'hy4-preview', 'hy3', 'omen-alpha'
+    ]
     case 'doubao': return doubaoModels
     case 'minimax': return minimaxModels
     case 'baidu': return baiduModels

frontend/src/constants/__tests__/platforms.spec.ts

@@ -10,7 +10,8 @@ const concretePlatforms = [
   'kimi',
   'zhipu',
   'deepseek',
-  'minimax'
+  'minimax',
+  'opencode_go'
 ]
 
 describe('platform option catalogs', () => {

frontend/src/constants/channelMonitor.ts

@@ -18,6 +18,7 @@ export const PROVIDER_KIMI: Provider = 'kimi'
 export const PROVIDER_ZHIPU: Provider = 'zhipu'
 export const PROVIDER_DEEPSEEK: Provider = 'deepseek'
 export const PROVIDER_MINIMAX: Provider = 'minimax'
+export const PROVIDER_OPENCODE_GO: Provider = 'opencode_go'
 
 export const DEFAULT_GROK_ENDPOINT = 'https://api.x.ai'
 export const DEFAULT_GROK_MODEL = 'grok-4.5'
@@ -27,6 +28,7 @@ export const DEFAULT_KIMI_ENDPOINT = 'https://api.moonshot.cn'
 export const DEFAULT_ZHIPU_ENDPOINT = 'https://open.bigmodel.cn'
 export const DEFAULT_DEEPSEEK_ENDPOINT = 'https://api.deepseek.com'
 export const DEFAULT_MINIMAX_ENDPOINT = 'https://api.minimaxi.com'
+export const DEFAULT_OPENCODE_GO_ENDPOINT = 'https://opencode.ai/zen/go/v1'
 
 export const CHECK_MODE_PROBE: CheckMode = 'probe'
 export const CHECK_MODE_QUOTA: CheckMode = 'quota'
@@ -45,6 +47,7 @@ export const PROVIDERS: readonly Provider[] = [
   PROVIDER_ZHIPU,
   PROVIDER_DEEPSEEK,
   PROVIDER_MINIMAX,
+  PROVIDER_OPENCODE_GO,
 ]
 
 /** 仅支持配额模式（无探活 adapter）的 provider。 */

frontend/src/constants/platforms.ts

@@ -19,7 +19,8 @@ export const CONCRETE_PLATFORM_OPTIONS = [
   { value: 'kimi', label: 'Kimi' },
   { value: 'zhipu', label: 'Zhipu GLM' },
   { value: 'deepseek', label: 'DeepSeek' },
-  { value: 'minimax', label: 'MiniMax' }
+  { value: 'minimax', label: 'MiniMax' },
+  { value: 'opencode_go', label: 'OpenCode' }
 ] as const satisfies readonly PlatformOption<AccountPlatform>[]
 
 /** Platforms that can own a group. */

frontend/src/i18n/locales/en/admin/accounts.ts

@@ -108,6 +108,7 @@ export default {
         zhipu: 'Zhipu GLM',
         deepseek: 'DeepSeek',
         minimax: 'MiniMax',
+        opencode_go: 'OpenCode',
       },
       cnProviders: {
         accountMode: {
@@ -149,12 +150,30 @@ export default {
         balance: 'Balance --',
         window5h: '5h',
         windowWeekly: '7d',
+        windowMonthly: '30d',
         probe: 'Query',
         probeTooltip: 'Query the provider quota endpoint for 5-hour / weekly rolling window usage',
         balanceProbeTooltip: 'Query the provider balance endpoint for the account balance',
         balanceLow: 'Insufficient balance',
         noBalanceEndpoint: 'This platform has no balance query endpoint',
       },
+      opencodeGo: {
+        accountMode: {
+          zen: 'Zen',
+          zenDesc: 'Pay-as-you-go gateway. Consumes account credits, billed per token.',
+          go: 'GO',
+          goDesc: 'Subscription gateway, rate-limited by 5-hour / weekly / monthly usage windows.',
+        },
+        protocolRules: {
+          title: 'Model protocol routing',
+          hint: 'In adaptive mode, each model is sent to a native upstream protocol. Use an exact ID or a trailing * glob (e.g. grok-*, qwen*). The first matching rule wins; unmatched models use Chat Completions.',
+          patternPlaceholder: 'grok-* or deepseek-v4-flash',
+          add: 'Add rule',
+          remove: 'Remove rule',
+          restoreDefaults: 'Restore defaults',
+          fallback: 'Unmatched models → Chat Completions (/v1/chat/completions)',
+        },
+      },
       types: {
         oauth: 'OAuth',
         chatgptOauth: 'ChatGPT OAuth',

frontend/src/i18n/locales/en/admin/overview.ts

@@ -982,6 +982,7 @@ export default {
         zhipu: 'Zhipu GLM',
         deepseek: 'DeepSeek',
         minimax: 'MiniMax',
+        opencode_go: 'OpenCode',
         composite: 'Composite',
       },
       deleteConfirm:

frontend/src/i18n/locales/en/dashboard.ts

@@ -473,7 +473,8 @@ export default {
       kimi: 'Kimi',
       zhipu: 'Zhipu GLM',
       deepseek: 'DeepSeek',
-      minimax: 'MiniMax'
+      minimax: 'MiniMax',
+      opencode_go: 'OpenCode'
     },
     // Check modes (how a monitor performs its checks)
     checkMode: {
@@ -490,6 +491,7 @@ export default {
         '7dSonnet': '7d Sonnet',
         '7dFable': '7d Fable',
         weekly: 'Weekly',
+        monthly: 'Monthly',
         daily: 'Daily',
         '30d': '30d',
         total: 'Total'

frontend/src/i18n/locales/zh/admin/accounts.ts

@@ -311,6 +311,7 @@ export default {
         zhipu: 'Zhipu GLM',
         deepseek: 'DeepSeek',
         minimax: 'MiniMax',
+        opencode_go: 'OpenCode',
       },
       cnProviders: {
         accountMode: {
@@ -352,12 +353,30 @@ export default {
         balance: '余额 --',
         window5h: '5h',
         windowWeekly: '7d',
+        windowMonthly: '月',
         probe: '查询',
         probeTooltip: '请求供应商额度端点，查询 5 小时 / 每周滚动窗口用量',
         balanceProbeTooltip: '请求供应商余额端点，查询账户余额',
         balanceLow: '余额不足',
         noBalanceEndpoint: '该平台暂无余额查询接口',
       },
+      opencodeGo: {
+        accountMode: {
+          zen: 'Zen',
+          zenDesc: '按量付费网关，消耗账户余额，按 Token 计费。',
+          go: 'GO',
+          goDesc: '订阅制网关，按 5 小时 / 周 / 月滚动用量窗口限流。',
+        },
+        protocolRules: {
+          title: '模型协议分流',
+          hint: '自适应模式下按模型匹配上游协议。支持精确 ID 或末尾 * 通配（如 grok-*、qwen*）；自上而下第一条命中生效；未命中走 Chat Completions。',
+          patternPlaceholder: 'grok-* 或 deepseek-v4-flash',
+          add: '添加规则',
+          remove: '删除规则',
+          restoreDefaults: '恢复默认',
+          fallback: '未命中以上规则 → Chat Completions（/v1/chat/completions）',
+        },
+      },
       types: {
         oauth: 'OAuth',
         chatgptOauth: 'ChatGPT OAuth',

frontend/src/i18n/locales/zh/admin/overview.ts

@@ -915,6 +915,7 @@ export default {
         zhipu: 'Zhipu GLM',
         deepseek: 'DeepSeek',
         minimax: 'MiniMax',
+        opencode_go: 'OpenCode',
         composite: 'Composite',
       },
       saving: '保存中...',

frontend/src/i18n/locales/zh/dashboard.ts

@@ -478,7 +478,8 @@ export default {
       kimi: 'Kimi',
       zhipu: '智谱 GLM',
       deepseek: 'DeepSeek',
-      minimax: 'MiniMax'
+      minimax: 'MiniMax',
+      opencode_go: 'OpenCode'
     },
     // 检查模式（监控条目的工作方式）
     checkMode: {
@@ -495,6 +496,7 @@ export default {
         '7dSonnet': '7 天 Sonnet',
         '7dFable': '7 天 Fable',
         weekly: '周',
+        monthly: '月',
         daily: '日',
         '30d': '30 天',
         total: '总量'

frontend/src/types/index.ts

@@ -534,7 +534,7 @@ export interface PaginationConfig {
 
 // ==================== API Key & Group Types ====================
 
-export type GroupPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'kimi' | 'zhipu' | 'deepseek' | 'minimax' | 'composite'
+export type GroupPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'kimi' | 'zhipu' | 'deepseek' | 'minimax' | 'opencode_go' | 'composite'
 
 export type VideoModelPrices = Record<string, Record<string, number>>
 
@@ -914,7 +914,7 @@ export interface UpdateGroupRequest {
 
 // ==================== Account & Proxy Types ====================
 
-export type AccountPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'kimi' | 'zhipu' | 'deepseek' | 'minimax'
+export type AccountPlatform = 'anthropic' | 'openai' | 'gemini' | 'antigravity' | 'grok' | 'kimi' | 'zhipu' | 'deepseek' | 'minimax' | 'opencode_go'
 export type AccountType = 'oauth' | 'setup-token' | 'apikey' | 'upstream' | 'bedrock' | 'service_account'
 export type OAuthAddMethod = 'oauth' | 'setup-token'
 export type ProxyProtocol = 'http' | 'https' | 'socks5' | 'socks5h'

frontend/src/utils/platformColors.ts

@@ -15,6 +15,7 @@ export type Platform =
   | 'zhipu'
   | 'deepseek'
   | 'minimax'
+  | 'opencode_go'
   | 'composite'
 
 // ── Badge (bg + text + border, for inline badges with border) ───────
@@ -28,6 +29,7 @@ const BADGE: Record<Platform, string> = {
   zhipu: 'bg-indigo-500/10 text-indigo-600 border-indigo-500/30 dark:text-indigo-400',
   deepseek: 'bg-teal-500/10 text-teal-600 border-teal-500/30 dark:text-teal-400',
   minimax: 'bg-rose-500/10 text-rose-600 border-rose-500/30 dark:text-rose-400',
+  opencode_go: 'bg-amber-500/10 text-amber-700 border-amber-500/30 dark:text-amber-300',
   composite: 'bg-cyan-500/10 text-cyan-700 border-cyan-500/30 dark:text-cyan-300',
 }
 const BADGE_DEFAULT = 'bg-slate-500/10 text-slate-600 border-slate-500/30 dark:text-slate-400'
@@ -43,6 +45,7 @@ const BADGE_LIGHT: Record<Platform, string> = {
   zhipu: 'bg-indigo-500/10 text-indigo-600 dark:bg-indigo-500/10 dark:text-indigo-300',
   deepseek: 'bg-teal-500/10 text-teal-600 dark:bg-teal-500/10 dark:text-teal-300',
   minimax: 'bg-rose-500/10 text-rose-600 dark:bg-rose-500/10 dark:text-rose-300',
+  opencode_go: 'bg-amber-500/10 text-amber-700 dark:bg-amber-500/10 dark:text-amber-300',
   composite: 'bg-cyan-500/10 text-cyan-700 dark:bg-cyan-500/10 dark:text-cyan-300',
 }
 
@@ -57,6 +60,7 @@ const BORDER: Record<Platform, string> = {
   zhipu: 'border-indigo-500/20 dark:border-indigo-500/20',
   deepseek: 'border-teal-500/20 dark:border-teal-500/20',
   minimax: 'border-rose-500/20 dark:border-rose-500/20',
+  opencode_go: 'border-amber-500/20 dark:border-amber-500/20',
   composite: 'border-cyan-500/20 dark:border-cyan-500/20',
 }
 const BORDER_DEFAULT = 'border-gray-200 dark:border-dark-700'
@@ -72,6 +76,7 @@ const BORDER_STRONG: Record<Platform, string> = {
   zhipu: 'border-indigo-500/35 dark:border-indigo-500/30',
   deepseek: 'border-teal-500/35 dark:border-teal-500/30',
   minimax: 'border-rose-500/35 dark:border-rose-500/30',
+  opencode_go: 'border-amber-500/35 dark:border-amber-500/30',
   composite: 'border-cyan-500/35 dark:border-cyan-500/30',
 }
 const BORDER_STRONG_DEFAULT = 'border-gray-300 dark:border-dark-600'
@@ -88,6 +93,7 @@ const ACCENT: Record<Platform, string> = {
   zhipu: '#6366f1', // indigo-500
   deepseek: '#14b8a6', // teal-500
   minimax: '#f43f5e', // rose-500
+  opencode_go: '#f59e0b', // amber-500
   composite: '#06b6d4', // cyan-500
 }
 const ACCENT_DEFAULT = '#14b8a6' // primary-500 (teal)
@@ -103,6 +109,7 @@ const ACCENT_BAR: Record<Platform, string> = {
   zhipu: 'bg-gradient-to-r from-indigo-400 to-indigo-500',
   deepseek: 'bg-gradient-to-r from-teal-400 to-teal-500',
   minimax: 'bg-gradient-to-r from-rose-400 to-rose-500',
+  opencode_go: 'bg-gradient-to-r from-amber-400 to-amber-500',
   composite: 'bg-gradient-to-r from-slate-500 to-cyan-500',
 }
 const ACCENT_BAR_DEFAULT = 'bg-gradient-to-r from-primary-400 to-primary-500'
@@ -118,6 +125,7 @@ const TEXT: Record<Platform, string> = {
   zhipu: 'text-indigo-600 dark:text-indigo-400',
   deepseek: 'text-teal-600 dark:text-teal-400',
   minimax: 'text-rose-600 dark:text-rose-400',
+  opencode_go: 'text-amber-700 dark:text-amber-300',
   composite: 'text-cyan-700 dark:text-cyan-300',
 }
 const TEXT_DEFAULT = 'text-primary-600 dark:text-primary-400'
@@ -133,6 +141,7 @@ const ICON: Record<Platform, string> = {
   zhipu: 'text-indigo-500 dark:text-indigo-400',
   deepseek: 'text-teal-500 dark:text-teal-400',
   minimax: 'text-rose-500 dark:text-rose-400',
+  opencode_go: 'text-amber-500 dark:text-amber-300',
   composite: 'text-cyan-600 dark:text-cyan-300',
 }
 const ICON_DEFAULT = 'text-primary-500 dark:text-primary-400'
@@ -148,6 +157,7 @@ const BUTTON: Record<Platform, string> = {
   zhipu: 'bg-indigo-500 text-white hover:bg-indigo-600 active:bg-indigo-700 dark:bg-indigo-500/80 dark:hover:bg-indigo-500',
   deepseek: 'bg-teal-500 text-white hover:bg-teal-600 active:bg-teal-700 dark:bg-teal-500/80 dark:hover:bg-teal-500',
   minimax: 'bg-rose-500 text-white hover:bg-rose-600 active:bg-rose-700 dark:bg-rose-500/80 dark:hover:bg-rose-500',
+  opencode_go: 'bg-amber-500 text-white hover:bg-amber-600 active:bg-amber-700 dark:bg-amber-500/80 dark:hover:bg-amber-500',
   composite: 'bg-cyan-700 text-white hover:bg-cyan-800 active:bg-cyan-900 dark:bg-cyan-600 dark:hover:bg-cyan-500',
 }
 const BUTTON_DEFAULT = 'bg-primary-500 text-white hover:bg-primary-600 dark:bg-primary-600 dark:hover:bg-primary-500'
@@ -163,6 +173,7 @@ const DISCOUNT: Record<Platform, string> = {
   zhipu: 'bg-indigo-100 text-indigo-700 dark:bg-indigo-900/40 dark:text-indigo-300',
   deepseek: 'bg-teal-100 text-teal-700 dark:bg-teal-900/40 dark:text-teal-300',
   minimax: 'bg-rose-100 text-rose-700 dark:bg-rose-900/40 dark:text-rose-300',
+  opencode_go: 'bg-amber-100 text-amber-800 dark:bg-amber-900/40 dark:text-amber-300',
   composite: 'bg-cyan-100 text-cyan-800 dark:bg-cyan-900/40 dark:text-cyan-300',
 }
 const DISCOUNT_DEFAULT = 'bg-red-100 text-red-700 dark:bg-red-900/40 dark:text-red-300'
@@ -178,6 +189,7 @@ const GRADIENT: Record<Platform, string> = {
   zhipu: 'from-indigo-500 to-indigo-600',
   deepseek: 'from-teal-500 to-teal-600',
   minimax: 'from-rose-500 to-rose-600',
+  opencode_go: 'from-amber-500 to-amber-600',
   composite: 'from-slate-600 to-cyan-600',
 }
 const GRADIENT_DEFAULT = 'from-primary-500 to-primary-600'
@@ -193,6 +205,7 @@ const GRADIENT_TEXT: Record<Platform, string> = {
   zhipu: 'text-indigo-100',
   deepseek: 'text-teal-100',
   minimax: 'text-rose-100',
+  opencode_go: 'text-amber-100',
   composite: 'text-cyan-100',
 }
 const GRADIENT_TEXT_DEFAULT = 'text-primary-100'
@@ -207,6 +220,7 @@ const GRADIENT_SUBTEXT: Record<Platform, string> = {
   zhipu: 'text-indigo-200',
   deepseek: 'text-teal-200',
   minimax: 'text-rose-200',
+  opencode_go: 'text-amber-200',
   composite: 'text-cyan-200',
 }
 const GRADIENT_SUBTEXT_DEFAULT = 'text-primary-200'
@@ -224,6 +238,7 @@ function isPlatform(p: string): p is Platform {
     p === 'zhipu' ||
     p === 'deepseek' ||
     p === 'minimax' ||
+    p === 'opencode_go' ||
     p === 'composite'
   )
 }
@@ -291,6 +306,7 @@ export function platformLabel(p: string): string {
     case 'zhipu': return 'Zhipu GLM'
     case 'deepseek': return 'DeepSeek'
     case 'minimax': return 'MiniMax'
+    case 'opencode_go': return 'OpenCode'
     case 'composite': return 'Composite'
     default: return p || 'API'
   }