tongzhou wang e974aad3b1 Support model-specific function description prefixes (#51930) ...

## What changed

Add `functions_namespace_functions_description_prefixes` to model tool messages, keyed by unqualified tool name. Prepend this guidance to descriptions in the `functions` namespace across direct declarations, Code Mode documentation, and tool-search results, including custom tools.

Trim prefixes, ignore empty values and unavailable functions, and enforce a combined 256-byte UTF-8 limit including separators for reachable tools. Keep overrides local to each step, preserve search ranking text, and retain runtime caches for unaffected tools.

## Testing

Extend coverage for direct and indirect descriptions, clearing prefixes when switching models, namespace scoping for deferred dynamic tools, and tool-search cache reuse and reset.

GitOrigin-RevId: f434e37cec010764fe3e09fb12c339e933b3c21c

2026-10-08 03:20:54 +00:00

..

agent

Load persisted sender context for Guardian reviews (#51734)

2026-10-07 15:47:21 +00:00

apps

…

config

Keep global app-server config independent of the launch directory (#51872)

2026-10-07 23:19:26 +00:00

context

Record metrics for incremental tool updates (#51893)

2026-10-08 00:56:11 +00:00

context_manager

Remove obsolete fields from persisted turn context (#51492)

2026-10-06 22:39:06 +00:00

exec_policy

Apply remote platform semantics to exec safety checks (#42113)

2026-09-01 18:24:56 +00:00

guardian

Roll back stale Guardian reviews before reusing reviewer history (#51683)

2026-10-07 13:05:06 +00:00

mcp_tool_call

Add opt-in conversation history retrieval to Guardian reviews (#49036)

2026-09-28 17:29:52 +00:00

plugins

Attribute command and plugin analytics to the invoking model (#45445)

2026-09-14 15:30:22 +00:00

realtime_conversation

Expose and persist turn lineage across the app server (#51415)

2026-10-06 16:56:39 +00:00

realtime_history

Record realtime conversation history in Core (#41924)

2026-08-31 22:38:23 +00:00

sandboxing

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

session

Record metrics for incremental tool updates (#51893)

2026-10-08 00:56:11 +00:00

state

Add experimental prediction forks that inherit parent context (#51884)

2026-10-08 00:09:03 +00:00

tasks

Preserve tool declaration mode across resumed context windows (#51480)

2026-10-06 21:28:13 +00:00

thread_manager

Expose detailed agent tree shutdown failure reports (#51515)

2026-10-06 23:28:55 +00:00

tools

Support model-specific function description prefixes (#51930)

2026-10-08 03:20:54 +00:00

unified_exec

Support model-specific function description prefixes (#51930)

2026-10-08 03:20:54 +00:00

utils

Count serialized JSON bytes without allocating strings (#40604)

2026-08-25 13:10:24 +00:00

agent_communication.rs

Preserve queued agent mail across session eviction (#50087)

2026-10-01 20:17:34 +00:00

agent_message_board.rs

Deliver remote message board notifications to active turns (#49686)

2026-09-30 17:33:59 +00:00

agents_md_manager.rs

Roll back stale Guardian reviews before reusing reviewer history (#51683)

2026-10-07 13:05:06 +00:00

agents_md_tests.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

agents_md.rs

Reject paths in project documentation fallback filenames (#45865)

2026-09-16 04:59:23 +00:00

apply_patch_tests.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

apply_patch.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

attestation.rs

…

client_common_tests.rs

Send base instructions as Responses input messages (#51156)

2026-10-05 18:52:51 +00:00

client_common.rs

Send incremental tool catalog updates in Responses Lite (#50540)

2026-10-03 05:59:07 +00:00

client_tests.rs

Report specific reasons for WebSocket continuation failures (#51895)

2026-10-08 01:02:21 +00:00

client_tool_metadata_tests.rs

Send base instructions as Responses input messages (#51156)

2026-10-05 18:52:51 +00:00

client_tool_metadata.rs

Bound tool-call observations to the outgoing Responses message budget (#47957)

2026-09-24 22:54:29 +00:00

client.rs

Report specific reasons for WebSocket continuation failures (#51895)

2026-10-08 01:02:21 +00:00

codex_delegate_tests.rs

Expose and persist turn lineage across the app server (#51415)

2026-10-06 16:56:39 +00:00

codex_delegate.rs

Separate environment requests from runtime selections (#51221)

2026-10-06 01:39:50 +00:00

codex_thread.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

command_canonicalization_tests.rs

…

command_canonicalization.rs

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compact_model_fallback.rs

Install full context in compaction replacement history (#51117)

2026-10-05 16:10:27 +00:00

compact_remote_history_tests.rs

Remove the unused legacy remote compaction implementation (#44273)

2026-09-09 18:40:53 +00:00

compact_remote_history.rs

Remove the unused legacy remote compaction implementation (#44273)

2026-09-09 18:40:53 +00:00

compact_remote_v2_attempt.rs

Preserve tool declaration mode across resumed context windows (#51480)

2026-10-06 21:28:13 +00:00

compact_remote_v2_image_budget_tests.rs

Account for file images in context budgets and Guardian reviews (#46072)

2026-09-17 01:38:13 +00:00

compact_remote_v2_images.rs

Deduplicate retained instructions across Guardian reviews (#48060)

2026-09-25 10:49:50 +00:00

compact_remote_v2.rs

Record base instructions in incremental tool history (#51188)

2026-10-05 22:20:38 +00:00

compact_tests.rs

Preserve tool declaration mode across resumed context windows (#51480)

2026-10-06 21:28:13 +00:00

compact_token_budget.rs

Install full context in compaction replacement history (#51117)

2026-10-05 16:10:27 +00:00

compact.rs

Record base instructions in incremental tool history (#51188)

2026-10-05 22:20:38 +00:00

connectors_tests.rs

Honor app link settings for MCP tool approvals (#42056)

2026-09-01 13:43:27 +00:00

connectors.rs

Allow exec-server to proxy permitted private IPs upstream (#48568)

2026-09-26 23:17:41 +00:00

current_time.rs

…

cyber_access_program.rs

Add per-turn Cyber access program selection to exec and the SDK (#49939)

2026-10-01 08:57:53 +00:00

elicitation_tests.rs

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elicitation.rs

…

environment_selection_snapshot_tests.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

environment_selection.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

event_mapping_tests.rs

Support image references by file ID in inputs and tool outputs (#45794)

2026-09-15 21:19:08 +00:00

event_mapping.rs

Support image references by file ID in inputs and tool outputs (#45794)

2026-09-15 21:19:08 +00:00

exec_env_tests.rs

Make apply_patch preserve line endings unconditionally (#51203)

2026-10-05 23:52:06 +00:00

exec_env.rs

Make apply_patch preserve line endings unconditionally (#51203)

2026-10-05 23:52:06 +00:00

exec_policy_tests.rs

Remove selected core test cases (#42066)

2026-09-01 14:43:27 +00:00

exec_policy_windows_tests.rs

Retire the untrusted approval policy (#39630)

2026-08-20 07:03:02 +00:00

exec_policy.rs

Apply remote platform semantics to exec safety checks (#42113)

2026-09-01 18:24:56 +00:00

exec_tests.rs

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

exec.rs

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

feedback_config_tests.rs

Add configuration and feature diagnostics to report metadata (#46501)

2026-09-18 23:07:36 +00:00

feedback_config.rs

Add configuration and feature diagnostics to report metadata (#46501)

2026-09-18 23:07:36 +00:00

function_tool.rs

Complete dynamic tool lifecycles on cancellation (#51556)

2026-10-07 03:07:51 +00:00

git_info_tests.rs

Use descriptor-safe helpers for executable test fixtures (#50018)

2026-10-01 15:57:03 +00:00

guardian_review.rs

Add opt-in conversation history retrieval to Guardian reviews (#49036)

2026-09-28 17:29:52 +00:00

hook_mcp_executor.rs

Preserve executor context for MCP stop hooks (#40012)

2026-08-21 21:17:42 +00:00

hook_runtime.rs

Preserve human overrides across repeated heartbeat instructions (#47851)

2026-09-24 14:48:41 +00:00

image_preparation_tests.rs

Pass thread persistence intent to attachment uploads (#51517)

2026-10-06 23:44:17 +00:00

image_preparation.rs

Pass thread persistence intent to attachment uploads (#51517)

2026-10-06 23:44:17 +00:00

installation_id.rs

…

lib.rs

Expose detailed agent tree shutdown failure reports (#51515)

2026-10-06 23:28:55 +00:00

mcp_openai_file.rs

Bind permission grants to the originating turn (#49880)

2026-10-01 05:33:36 +00:00

mcp_skill_dependencies.rs

Make MCP and Code Mode input schema budgets configurable (#47936)

2026-09-24 20:39:37 +00:00

mcp_tool_approval_templates.rs

Organize bundled Rust resources under asset directories (#41477)

2026-08-29 06:05:28 +00:00

mcp_tool_call_tests.rs

Bind capability roots to environment selections (#51493)

2026-10-06 22:39:32 +00:00

mcp_tool_call.rs

Include root turn IDs in host-owned Apps tool calls (#51421)

2026-10-06 17:10:43 +00:00

mcp_tool_exposure_test.rs

…

mcp_tool_exposure.rs

Reuse MCP handler metadata for cache comparisons (#51755)

2026-10-07 16:35:05 +00:00

mcp.rs

Expose selected environments to MCP contributors (#51503)

2026-10-06 23:07:48 +00:00

memory_usage.rs

Tag memory usage telemetry with the memory version (#45960)

2026-09-16 15:17:41 +00:00

mention_syntax.rs

…

model_request_tests.rs

Preserve WebSocket continuations when steering a turn (#48508)

2026-09-26 18:36:55 +00:00

model_request.rs

Add extension hooks for model requests and response streams (#47679)

2026-09-23 22:10:04 +00:00

network_policy_decision_tests.rs

…

network_policy_decision.rs

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original_image_detail.rs

…

otel_init.rs

Enforce application network policy for AWS auth and telemetry (#47408)

2026-09-23 00:47:34 +00:00

prompt_debug.rs

Preserve tool declaration mode across resumed context windows (#51480)

2026-10-06 21:28:13 +00:00

realtime_context_tests.rs

Persist Daybreak preferences in thread metadata (#42854)

2026-09-04 21:17:25 +00:00

realtime_context.rs

Add experimental app-server project APIs (#38940)

2026-08-17 04:01:37 +00:00

realtime_conversation_tests.rs

Add completion-aware realtime attachment and session-scoped detach (#51539)

2026-10-07 01:28:59 +00:00

realtime_conversation.rs

Add completion-aware realtime attachment and session-scoped detach (#51539)

2026-10-07 01:28:59 +00:00

realtime_history_tests.rs

Record resolved model and reasoning effort in sub-agent activity (#51463)

2026-10-06 19:29:40 +00:00

realtime_history.rs

Record realtime conversation history in Core (#41924)

2026-08-31 22:38:23 +00:00

realtime_prompt.rs

…

responses_headers.rs

Route Guardian requests through /responses with identifying headers (#45736)

2026-09-15 17:09:11 +00:00

responses_metadata.rs

Add diagnostic reasons to MCP attribution errors (#47899)

2026-09-24 18:06:07 +00:00

responses_retry_tests.rs

Move content-filter guidance into the shared Responses retry handler (#49130)

2026-09-29 02:05:56 +00:00

responses_retry.rs

Honor server retry advice across Responses retries and fallback (#49441)

2026-09-30 02:12:42 +00:00

rollout_budget.rs

Expose a backend-independent agent control contract (#46547)

2026-09-19 01:03:55 +00:00

rollout.rs

…

safety_tests.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

safety.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

sandbox_tags_tests.rs

Report configured sandbox policy consistently (#41933)

2026-08-31 23:29:20 +00:00

sandbox_tags.rs

Enable MXC selection through Windows sandbox configuration (#46271)

2026-09-17 18:20:28 +00:00

session_prefix_tests.rs

Notify parent agents when Guardian stops a subagent (#49312)

2026-09-29 16:53:11 +00:00

session_prefix.rs

Notify parent agents when Guardian stops a subagent (#49312)

2026-09-29 16:53:11 +00:00

session_rollout_init_error.rs

Preserve sandbox errors during session initialization (#40381)

2026-08-24 10:56:54 +00:00

shell_snapshot_sandbox_tests.rs

Preserve sandbox overrides across execution requests (#51786)

2026-10-07 17:59:22 +00:00

shell_snapshot_sandbox.rs

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

shell_snapshot_tests.rs

Preserve sandbox overrides across execution requests (#51786)

2026-10-07 17:59:22 +00:00

shell_snapshot.rs

Suppress Windows console windows for background subprocesses (#49164)

2026-09-29 04:38:37 +00:00

shell_tests.rs

Restore executor tool paths after login shell startup (#49467)

2026-09-30 03:22:55 +00:00

shell.rs

Restore executor tool paths after login shell startup (#49467)

2026-09-30 03:22:55 +00:00

skills.rs

Use PathUri for skill identity and path matching (#51482)

2026-10-06 21:29:35 +00:00

spawn.rs

Suppress Windows console windows for background subprocesses (#49164)

2026-09-29 04:38:37 +00:00

state_db_bridge.rs

…

stream_events_utils_tests.rs

Handle partial answers consistently across agent workflows (#51249)

2026-10-06 03:27:04 +00:00

stream_events_utils.rs

Report specific reasons for WebSocket continuation failures (#51895)

2026-10-08 01:02:21 +00:00

test_support.rs

Default local threads to paginated history (#47900)

2026-09-24 18:07:37 +00:00

thread_manager_tests.rs

Expose selected environments to MCP contributors (#51503)

2026-10-06 23:07:48 +00:00

thread_manager.rs

Add experimental prediction forks that inherit parent context (#51884)

2026-10-08 00:09:03 +00:00

thread_rollout_truncation_tests.rs

Expose and persist turn lineage across the app server (#51415)

2026-10-06 16:56:39 +00:00

thread_rollout_truncation.rs

Remove partial-history subagent forks (#51329)

2026-10-06 10:39:16 +00:00

thread_startup_metadata.rs

Remove initial messages from session configuration events (#50360)

2026-10-02 16:55:41 +00:00

turn_diff_tracker_tests.rs

…

turn_diff_tracker.rs

…

turn_extension_data.rs

Capture host-supplied extension data for each turn (#49846)

2026-10-01 03:31:48 +00:00

turn_metadata_tests.rs

Preserve review targets and scope misalignment continuation metadata (#51217)

2026-10-06 01:26:11 +00:00

turn_metadata.rs

Preserve review targets and scope misalignment continuation metadata (#51217)

2026-10-06 01:26:11 +00:00

turn_timing_tests.rs

Track inference tool changes in turn analytics (#50964)

2026-10-04 21:19:05 +00:00

turn_timing.rs

Track inference tool changes in turn analytics (#50964)

2026-10-04 21:19:05 +00:00

user_shell_command_tests.rs

…

user_shell_command.rs

Snapshot resolved settings for each model step (#40651)

2026-08-25 17:41:22 +00:00

util_tests.rs

…

util.rs

Move retry backoff into codex-async-utils (#46330)

2026-09-18 00:25:37 +00:00

web_search.rs

…

windows_sandbox_read_grants_tests.rs

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windows_sandbox_read_grants.rs

…

windows_sandbox_tests.rs

Always use private desktops for legacy Windows sandboxes (#46554)

2026-09-19 01:21:32 +00:00

windows_sandbox.rs

Always use private desktops for legacy Windows sandboxes (#46554)

2026-09-19 01:21:32 +00:00

windows_system_config.rs

Add telemetry for the Windows system config namespace (#44284)

2026-09-09 19:31:12 +00:00

worktree_trust_tests.rs

Add portable project trust lookup APIs (#47620)

2026-09-23 18:40:12 +00:00