codex

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eknight-oai f2654ea6c9 Support model-specific descriptions for agent message board tools (#47670 )

## Why

Channel tools use bundled descriptions even when the model catalog supplies tool messages. Let their descriptions follow the active model, including model changes within a turn.

## What changed

- Add channel tool entries to `MultiAgentToolMessages` and pass them to the message board extension for each step.
- Apply catalog descriptions while retaining bundled text for missing or null values and honoring empty strings. Ignore parameter overrides with a warning and keep bundled schemas.
- Clarify bundled descriptions for channel discovery, thread reading, posting, and subscription notifications.

## Testing

Add coverage for full and partial overrides in namespaced and Code Mode tools, preserving Code Mode declarations and parameter schemas. Extend the mid-turn model-change test to verify that the `post` description follows the active model.

GitOrigin-RevId: fca20bed1203d5214713f82cb16a91eeebb38f56

2026-09-23 21:34:11 +00:00

agent

Unify turn input submission and routing (#38275 )

2026-08-13 00:00:16 +00:00

agent-message-board

Support model-specific descriptions for agent message board tools (#47670 )

2026-09-23 21:34:11 +00:00

connectors

Rename plugin MCP and app extension APIs (#46564 )

2026-09-19 01:45:51 +00:00

extension-api

Expose tool dispatch and timing observations to extensions (#47662 )