diff --git a/backend/internal/service/account_test_service.go b/backend/internal/service/account_test_service.go
index b56861ebb6..4da9668dd8 100644
--- a/backend/internal/service/account_test_service.go
+++ b/backend/internal/service/account_test_service.go
@@ -2103,6 +2103,9 @@ func (s *AccountTestService) testOpenAIChatCompletionsConnection(
 	req.Header.Set("Accept", "text/event-stream")
 	req.Header.Set("Authorization", "Bearer "+authToken)
 
+	// 官方 OpenCode / Command Code 上游收敛为规范客户端 UA，与真实转发路径一致。
+	applyOpenCodeUpstreamUserAgent(account, apiURL, req.Header)
+
 	// 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)
diff --git a/backend/internal/service/account_test_service_cn_adaptive.go b/backend/internal/service/account_test_service_cn_adaptive.go
index a68a691d27..4fe14c380b 100644
--- a/backend/internal/service/account_test_service_cn_adaptive.go
+++ b/backend/internal/service/account_test_service_cn_adaptive.go
@@ -84,6 +84,7 @@ func (s *AccountTestService) testCNProviderAdaptiveAnthropicConnection(c *gin.Co
 	// Ollama Cloud Anthropic 兼容端点按 adaptive 实际选用的 Anthropic
 	// base_url 强制 Bearer，其余保持 extra/default 行为。
 	setAnthropicAPIKeyAuthHeader(req.Header, account, authToken, account.GetCNProtocolBaseURL(APIProtocolAnthropic))
+	applyOpenCodeUpstreamUserAgent(account, apiURL, req.Header)
 	account.ApplyHeaderOverrides(req.Header)
 	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
@@ -178,6 +179,7 @@ func (s *AccountTestService) testCNProviderAdaptiveResponsesConnection(c *gin.Co
 	req.Header.Set("Accept", "text/event-stream")
 	req.Header.Set("Authorization", "Bearer "+authToken)
 	applyOpenAICodexProbeHeaders(req.Header)
+	applyOpenCodeUpstreamUserAgent(account, apiURL, req.Header)
 	account.ApplyHeaderOverrides(req.Header)
 	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
@@ -267,6 +269,7 @@ func (s *AccountTestService) testCNProviderAnthropicConnection(c *gin.Context, a
 	// Ollama Cloud Anthropic 兼容端点按实际 base_url 强制 Bearer，其余保持
 	// extra/default 行为。
 	setAnthropicAPIKeyAuthHeader(req.Header, account, authToken, account.GetAnthropicProtocolBaseURL())
+	applyOpenCodeUpstreamUserAgent(account, apiURL, req.Header)
 	account.ApplyHeaderOverrides(req.Header)
 	applyOpenCodeSessionHeader(c, account, apiURL, req.Header, payloadBytes)
 
diff --git a/backend/internal/service/openai_gateway_cc_pipeline.go b/backend/internal/service/openai_gateway_cc_pipeline.go
index 103423e8aa..0fe504a6f8 100644
--- a/backend/internal/service/openai_gateway_cc_pipeline.go
+++ b/backend/internal/service/openai_gateway_cc_pipeline.go
@@ -225,6 +225,10 @@ func (s *OpenAIGatewayService) sendCCUpstreamRequest(
 		}
 		applyGrokCacheHeaders(upstreamReq.Header, grokCacheIdentity)
 	}
+	// 官方 OpenCode / Command Code 上游收敛为规范客户端 UA：客户端透传的编程库
+	// UA 会命中其前置 Cloudflare bot 拦截（CF 1010/403），并被计入账号 403 strike。
+	applyOpenCodeUpstreamUserAgent(account, targetURL, upstreamReq.Header)
+
 	// 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)
diff --git a/backend/internal/service/openai_gateway_forward.go b/backend/internal/service/openai_gateway_forward.go
index 7f899d2c34..036754037f 100644
--- a/backend/internal/service/openai_gateway_forward.go
+++ b/backend/internal/service/openai_gateway_forward.go
@@ -1510,6 +1510,10 @@ func (s *OpenAIGatewayService) buildUpstreamRequest(ctx context.Context, c *gin.
 		req.Header.Set("content-type", "application/json")
 	}
 
+	// 官方 OpenCode / Command Code 上游收敛为规范客户端 UA：客户端透传的编程库
+	// UA 会命中其前置 Cloudflare bot 拦截（CF 1010/403），并被计入账号 403 strike。
+	applyOpenCodeUpstreamUserAgent(account, targetURL, req.Header)
+
 	// 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, body, openCodeSessionHintBody(promptCacheKey))
diff --git a/backend/internal/service/openai_gateway_messages_anthropic_native.go b/backend/internal/service/openai_gateway_messages_anthropic_native.go
index 263eceba04..1634a556fc 100644
--- a/backend/internal/service/openai_gateway_messages_anthropic_native.go
+++ b/backend/internal/service/openai_gateway_messages_anthropic_native.go
@@ -208,6 +208,10 @@ func (s *OpenAIGatewayService) buildNativeAnthropicUpstreamRequest(
 		setHeaderRaw(req.Header, "anthropic-version", "2023-06-01")
 	}
 
+	// 官方 OpenCode / Command Code 上游收敛为规范客户端 UA：客户端透传的编程库
+	// UA 会命中其前置 Cloudflare bot 拦截（CF 1010/403），并被计入账号 403 strike。
+	applyOpenCodeUpstreamUserAgent(account, targetURL, req.Header)
+
 	// 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...)
diff --git a/backend/internal/service/openai_gateway_passthrough.go b/backend/internal/service/openai_gateway_passthrough.go
index 4ff19f6781..701a431048 100644
--- a/backend/internal/service/openai_gateway_passthrough.go
+++ b/backend/internal/service/openai_gateway_passthrough.go
@@ -719,6 +719,10 @@ func (s *OpenAIGatewayService) buildUpstreamRequestOpenAIPassthrough(
 		req.Header.Set("content-type", "application/json")
 	}
 
+	// 官方 OpenCode / Command Code 上游收敛为规范客户端 UA：客户端透传的编程库
+	// UA 会命中其前置 Cloudflare bot 拦截（CF 1010/403），并被计入账号 403 strike。
+	applyOpenCodeUpstreamUserAgent(account, targetURL, req.Header)
+
 	// 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, body)
diff --git a/backend/internal/service/openai_opencode_session.go b/backend/internal/service/openai_opencode_session.go
index f5aaca641f..3e3f5faea3 100644
--- a/backend/internal/service/openai_opencode_session.go
+++ b/backend/internal/service/openai_opencode_session.go
@@ -14,6 +14,14 @@ import (
 const (
 	openCodeSessionHeader         = "X-OpenCode-Session"
 	openCodeInboundBodyContextKey = "opencode_inbound_body"
+
+	// openCodeUpstreamUserAgent 是发往官方 OpenCode 上游的规范 User-Agent。
+	// opencode.ai 前置 Cloudflare 按客户端 UA 签名做 bot 拦截：Python-urllib 等
+	// 编程库 UA 会被 CF error code 1010 拒绝并返回 403。网关透传白名单放行
+	// user-agent，客户端自报身份原样到达上游会命中 WAF；该 403 再被计入账号
+	// 凭证类 strike，健康账号因此被自动禁用。取值沿用真实 opencode 客户端的
+	// UA 格式（opencode/<version>）。
+	openCodeUpstreamUserAgent = "opencode/1.0.0"
 )
 
 // rememberOpenCodeInboundBody keeps the client request body so protocol
@@ -97,6 +105,46 @@ func isOfficialOpenCodeHost(targetURL string) bool {
 	return strings.EqualFold(parsed.Scheme, "https") && strings.EqualFold(parsed.Hostname(), "opencode.ai")
 }
 
+func isOfficialCommandCodeHost(targetURL string) bool {
+	parsed, err := url.Parse(targetURL)
+	if err != nil {
+		return false
+	}
+	return strings.EqualFold(parsed.Scheme, "https") && strings.EqualFold(parsed.Hostname(), "api.commandcode.ai")
+}
+
+// applyOpenCodeUpstreamUserAgent 将发往官方 OpenCode / Command Code 上游的出站
+// User-Agent 收敛为规范客户端身份，覆盖客户端透传值与平台默认 UA。判定规则与
+// x-opencode-session 同源：opencode 平台账号，或（任意平台账号）目标为官方主机。
+// 必须先于 Account.ApplyHeaderOverrides 调用——账号 header_overrides 中显式
+// 配置的 user-agent 仍拥有最终决定权。
+func applyOpenCodeUpstreamUserAgent(account *Account, targetURL string, headers http.Header) {
+	if headers == nil {
+		return
+	}
+
+	userAgent := ""
+	switch {
+	case isOfficialCommandCodeHost(targetURL):
+		userAgent = CodexCanonicalUserAgent()
+	case account != nil && account.IsOpenCodeGo(), isOfficialOpenCodeHost(targetURL):
+		userAgent = openCodeUpstreamUserAgent
+	default:
+		return
+	}
+	if userAgent == "" {
+		return
+	}
+
+	// 先删任意大小写变体再写入：透传链路与覆写直写 map 可能残留非 canonical 键。
+	for key := range headers {
+		if strings.EqualFold(key, "User-Agent") {
+			delete(headers, key)
+		}
+	}
+	headers.Set("User-Agent", userAgent)
+}
+
 func resolveOpenCodeSessionID(c *gin.Context, headers http.Header, generate bool, bodies ...[]byte) string {
 	if c != nil && c.Request != nil {
 		if sessionID := sanitizeSessionID(c.GetHeader(openCodeSessionHeader)); sessionID != "" {
diff --git a/backend/internal/service/openai_opencode_session_test.go b/backend/internal/service/openai_opencode_session_test.go
index b4e455df7c..53341f8e26 100644
--- a/backend/internal/service/openai_opencode_session_test.go
+++ b/backend/internal/service/openai_opencode_session_test.go
@@ -307,6 +307,188 @@ func (u *openCodeSessionHTTPUpstream) DoWithTLS(req *http.Request, proxyURL stri
 	return u.Do(req, proxyURL, accountID, concurrency)
 }
 
+func TestApplyOpenCodeUpstreamUserAgent(t *testing.T) {
+	tests := []struct {
+		name      string
+		account   *Account
+		targetURL string
+		seed      string
+		want      string
+	}{
+		{
+			name:      "opencode go account canonicalizes passthrough UA",
+			account:   &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey},
+			targetURL: "https://opencode.ai/zen/go/v1/chat/completions",
+			seed:      "Python-urllib/3.13",
+			want:      openCodeUpstreamUserAgent,
+		},
+		{
+			name:      "opencode go account canonicalizes on custom relay too",
+			account:   &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey},
+			targetURL: "https://relay.example.com/v1/chat/completions",
+			seed:      "Python-urllib/3.13",
+			want:      openCodeUpstreamUserAgent,
+		},
+		{
+			name:      "non-opencode account targeting official host",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "https://opencode.ai/zen/go/v1/responses",
+			seed:      "Python-urllib/3.13",
+			want:      openCodeUpstreamUserAgent,
+		},
+		{
+			name:      "official command code host uses canonical Codex UA",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "https://api.commandcode.ai/provider/v1/responses",
+			seed:      "Python-urllib/3.13",
+			want:      CodexCanonicalUserAgent(),
+		},
+		{
+			name:      "command code lookalike host keeps client UA",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "https://api.commandcode.ai.evil.example/provider/v1/responses",
+			seed:      "Python-urllib/3.13",
+			want:      "Python-urllib/3.13",
+		},
+		{
+			name:      "command code subdomain keeps client UA",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "https://proxy.api.commandcode.ai/provider/v1/responses",
+			seed:      "Python-urllib/3.13",
+			want:      "Python-urllib/3.13",
+		},
+		{
+			name:      "insecure command code host keeps client UA",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "http://api.commandcode.ai/provider/v1/responses",
+			seed:      "Python-urllib/3.13",
+			want:      "Python-urllib/3.13",
+		},
+		{
+			name:      "non-official account and host keeps client UA",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "https://api.openai.com/v1/chat/completions",
+			seed:      "Python-urllib/3.13",
+			want:      "Python-urllib/3.13",
+		},
+		{
+			name:      "lookalike host does not count as official",
+			account:   &Account{Platform: PlatformOpenAI, Type: AccountTypeAPIKey},
+			targetURL: "https://opencode.ai.evil.example/v1/chat/completions",
+			seed:      "Python-urllib/3.13",
+			want:      "Python-urllib/3.13",
+		},
+		{
+			name:      "missing UA is filled for opencode account",
+			account:   &Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey},
+			targetURL: "https://opencode.ai/zen/go/v1/messages",
+			want:      openCodeUpstreamUserAgent,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			headers := make(http.Header)
+			if tt.seed != "" {
+				headers.Set("User-Agent", tt.seed)
+			}
+			applyOpenCodeUpstreamUserAgent(tt.account, tt.targetURL, headers)
+			require.Equal(t, tt.want, headers.Get("User-Agent"))
+		})
+	}
+}
+
+func TestApplyOpenCodeUpstreamUserAgentDropsNonCanonicalKeyVariants(t *testing.T) {
+	headers := http.Header{"user-agent": []string{"Python-urllib/3.13"}}
+	applyOpenCodeUpstreamUserAgent(&Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey},
+		"https://opencode.ai/zen/go/v1/chat/completions", headers)
+
+	count := 0
+	for key, values := range headers {
+		if strings.EqualFold(key, "User-Agent") {
+			count += len(values)
+			require.Equal(t, []string{openCodeUpstreamUserAgent}, values)
+		}
+	}
+	require.Equal(t, 1, count)
+}
+
+func TestApplyOpenCodeUpstreamUserAgentNilSafe(t *testing.T) {
+	applyOpenCodeUpstreamUserAgent(&Account{Platform: PlatformOpenCodeGo, Type: AccountTypeAPIKey},
+		"https://opencode.ai/zen/go/v1/chat/completions", nil)
+}
+
+func TestOpenCodeUpstreamUserAgentCanonicalizedAfterPassthrough(t *testing.T) {
+	// 回归：客户端透传的编程库 UA（Python-urllib）会被 opencode.ai 前置
+	// Cloudflare 以 error code 1010 拦截并计入账号 403 strike，导致健康账号
+	// 被自动禁用。出站 UA 必须收敛为规范 opencode 客户端身份。
+	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, "")
+	c.Request.Header.Set("User-Agent", "Python-urllib/3.13")
+
+	req, err := svc.buildUpstreamRequest(
+		context.Background(), c, account,
+		[]byte(`{"model":"glm-5.3","input":"hello"}`), "token", false, "", false,
+	)
+	require.NoError(t, err)
+	require.Equal(t, openCodeUpstreamUserAgent, req.Header.Get("User-Agent"))
+}
+
+func TestCommandCodeUpstreamUserAgentCanonicalizedAfterPassthrough(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	svc := openCodeSessionTestService()
+	account := &Account{
+		ID:       2,
+		Platform: PlatformOpenAI,
+		Type:     AccountTypeAPIKey,
+		Credentials: map[string]any{
+			"base_url": "https://api.commandcode.ai/provider/v1",
+		},
+	}
+	c := newOpenCodeSessionTestContext(t, "")
+	c.Request.Header.Set("User-Agent", "Python-urllib/3.13")
+
+	req, err := svc.buildUpstreamRequest(
+		context.Background(), c, account,
+		[]byte(`{"model":"gpt-5","input":"hello"}`), "token", false, "", false,
+	)
+	require.NoError(t, err)
+	require.Equal(t, CodexCanonicalUserAgent(), req.Header.Get("User-Agent"))
+}
+
+func TestOpenCodeUpstreamUserAgentYieldsToExplicitAccountOverride(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",
+			credKeyHeaderOverrideEnabled: true,
+			credKeyHeaderOverrides:       map[string]any{"user-agent": "custom-relay-agent/2.0"},
+		},
+	}
+	c := newOpenCodeSessionTestContext(t, "")
+	c.Request.Header.Set("User-Agent", "Python-urllib/3.13")
+
+	req, err := svc.buildUpstreamRequest(
+		context.Background(), c, account,
+		[]byte(`{"model":"glm-5.3","input":"hello"}`), "token", false, "", false,
+	)
+	require.NoError(t, err)
+	require.Equal(t, "custom-relay-agent/2.0", req.Header.Get("User-Agent"))
+}
+
 func TestOpenCodeSessionForwardedByRawChatCompletionsAfterAccountOverride(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	upstream := &openCodeSessionHTTPUpstream{}
diff --git a/backend/internal/service/ratelimit_service.go b/backend/internal/service/ratelimit_service.go
index 6fc119f7ba..5c80de5a6f 100644
--- a/backend/internal/service/ratelimit_service.go
+++ b/backend/internal/service/ratelimit_service.go
@@ -1039,6 +1039,15 @@ func (s *RateLimitService) handleOpenAI403(ctx context.Context, account *Account
 		)
 		return false
 	}
+	if isCloudflareBotBlockResponse(responseBody) {
+		slog.Warn(
+			"openai_403_cloudflare_bot_block_skips_account_penalty",
+			"account_id", account.ID,
+			"platform", account.Platform,
+			"upstream_message", upstreamMsg,
+		)
+		return false
+	}
 
 	msg := buildForbiddenErrorMessage(
 		"Access forbidden (403):",
@@ -1084,6 +1093,14 @@ func (s *RateLimitService) handleOpenAI403(ctx context.Context, account *Account
 	return true
 }
 
+// isCloudflareBotBlockResponse reports Cloudflare's WAF bot-signature response
+// (error code 1010). The upstream never reached the account API, so this is a
+// request/edge-level failure and must not consume the account 403 strike budget.
+func isCloudflareBotBlockResponse(body []byte) bool {
+	normalized := strings.ToLower(strings.TrimSpace(string(body)))
+	return strings.Contains(normalized, "error code: 1010")
+}
+
 // handleAntigravity403 处理 Antigravity 平台的 403 错误
 // validation（需要验证）→ 永久 SetError（需人工去 Google 验证后恢复）
 // violation（违规封号）→ 永久 SetError（需人工处理）
diff --git a/backend/internal/service/ratelimit_service_403_html_test.go b/backend/internal/service/ratelimit_service_403_html_test.go
index 5c8f782598..8768b41fea 100644
--- a/backend/internal/service/ratelimit_service_403_html_test.go
+++ b/backend/internal/service/ratelimit_service_403_html_test.go
@@ -68,6 +68,8 @@ func (h *openAI403TestHarness) requireNoAccountPenalty(t *testing.T) {
 const openAI403HTMLBody = "<!DOCTYPE html>\n<html><head><title>403 Forbidden</title></head>" +
 	"<body><h1>403 Forbidden</h1></body></html>"
 
+const openAI403Cloudflare1010Body = "error code: 1010\n"
+
 func TestHandleUpstreamError_OpenAIHTML403DoesNotPenalizeAccount(t *testing.T) {
 	cases := []struct {
 		name string
@@ -102,6 +104,32 @@ func TestHandleUpstreamError_OpenAIHTML403RepeatedNeverEscalates(t *testing.T) {
 	h.requireNoAccountPenalty(t)
 }
 
+func TestHandleUpstreamError_OpenAICloudflare1010DoesNotPenalizeAccount(t *testing.T) {
+	for _, platform := range []string{PlatformOpenAI, PlatformOpenCodeGo} {
+		t.Run(platform, func(t *testing.T) {
+			repo := &rateLimitAccountRepoStub{}
+			counter := &countingOpenAI403CounterCache{
+				openAI403CounterCacheStub: openAI403CounterCacheStub{counts: []int64{openAI403DisableThreshold}},
+			}
+			blocker := &runtimeBlockRecorder{}
+			svc := NewRateLimitService(repo, nil, &config.Config{}, nil, nil)
+			svc.SetOpenAI403CounterCache(counter)
+			svc.SetAccountRuntimeBlocker(blocker)
+			account := &Account{ID: 601, Platform: platform, Type: AccountTypeAPIKey}
+
+			shouldDisable := svc.HandleUpstreamError(
+				context.Background(), account, http.StatusForbidden, http.Header{}, []byte(openAI403Cloudflare1010Body),
+			)
+
+			require.False(t, shouldDisable, "Cloudflare 1010 不得判定账号应下线")
+			require.Equal(t, 0, counter.increments, "Cloudflare 1010 不得递增账号 403 计数")
+			require.Equal(t, 0, repo.setErrorCalls)
+			require.Equal(t, 0, repo.tempCalls)
+			require.Empty(t, blocker.accounts)
+		})
+	}
+}
+
 // 对照不变式：真正的结构化 JSON 403 是账号级证据，处罚链路必须原样保留。
 // 缺了这组断言，上面的跳过逻辑一旦写宽就会把真实的封号 403 也放过去。
 func TestHandleUpstreamError_OpenAIStructured403StillPenalizes(t *testing.T) {