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Expose invocation sources to extension tools (#40382)

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## What changed

- Add `ToolCallSource` to extension `ToolCall`s and propagate direct or Code Mode
  invocation metadata, including the runtime cell and nested tool-call IDs.
- Add `ToolCall::response_byte_budget` so extension tools can bound direct-call
  responses by the host truncation policy while allowing Code Mode responses up
  to the tool's own limit.
- Share the skills extension's response-size limit between its `list` and `read`
  tools.

## Testing

- Verify that Code Mode source metadata is preserved when core constructs an
  extension tool call.

GitOrigin-RevId: b10aef01be30d35b67bee3af24a1a4175c9ee112
This commit is contained in:
Tamir Duberstein authored and copyberry committed 2026-08-24 11:02:14 +00:00
1 parent 6771ae7ac3
commit e3609f2d02
14 files changed
+70 -24
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codex-rs/ext/memories/src/tests.rs
+7
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@@ -7,6 +7,7 @@ use codex_extension_api::ExtensionRegistryBuilder;
use codex_extension_api::NoopTurnItemEmitter;
use codex_extension_api::PromptSlot;
use codex_extension_api::ToolCall;
use codex_extension_api::ToolCallSource;
use codex_extension_api::ToolContributor;
use codex_extension_api::ToolExecutor;
use codex_extension_api::ToolName;
@@ -221,6 +222,7 @@ async fn add_ad_hoc_note_tool_creates_note_file() {
model: "gpt-test".to_string(),
codex_turn_metadata: None,
truncation_policy: TruncationPolicy::Bytes(1024),
source: ToolCallSource::Direct,
conversation_history: codex_extension_api::ConversationHistory::default(),
turn_item_emitter: Arc::new(NoopTurnItemEmitter),
environments: Vec::new(),
@@ -266,6 +268,7 @@ async fn add_ad_hoc_note_tool_rejects_paths_as_filenames() {
model: "gpt-test".to_string(),
codex_turn_metadata: None,
truncation_policy: TruncationPolicy::Bytes(1024),
source: ToolCallSource::Direct,
conversation_history: codex_extension_api::ConversationHistory::default(),
turn_item_emitter: Arc::new(NoopTurnItemEmitter),
environments: Vec::new(),
@@ -312,6 +315,7 @@ async fn read_tool_reads_memory_file() {
model: "gpt-test".to_string(),
codex_turn_metadata: None,
truncation_policy: TruncationPolicy::Bytes(1024),
source: ToolCallSource::Direct,
conversation_history: codex_extension_api::ConversationHistory::default(),
turn_item_emitter: Arc::new(NoopTurnItemEmitter),
environments: Vec::new(),
@@ -428,6 +432,7 @@ async fn search_tool_accepts_multiple_queries() {
model: "gpt-test".to_string(),
codex_turn_metadata: None,
truncation_policy: TruncationPolicy::Bytes(1024),
source: ToolCallSource::Direct,
conversation_history: codex_extension_api::ConversationHistory::default(),
turn_item_emitter: Arc::new(NoopTurnItemEmitter),
environments: Vec::new(),
@@ -503,6 +508,7 @@ async fn search_tool_accepts_windowed_all_match_mode() {
model: "gpt-test".to_string(),
codex_turn_metadata: None,
truncation_policy: TruncationPolicy::Bytes(1024),
source: ToolCallSource::Direct,
conversation_history: codex_extension_api::ConversationHistory::default(),
turn_item_emitter: Arc::new(NoopTurnItemEmitter),
environments: Vec::new(),
@@ -558,6 +564,7 @@ async fn search_tool_rejects_legacy_single_query() {
model: "gpt-test".to_string(),
codex_turn_metadata: None,
truncation_policy: TruncationPolicy::Bytes(1024),
source: ToolCallSource::Direct,
conversation_history: codex_extension_api::ConversationHistory::default(),
turn_item_emitter: Arc::new(NoopTurnItemEmitter),
environments: Vec::new(),