Abhinav 87070a7792 Enable MCP tool hooks in Codex sessions (#39296) ...

## What changed

- Execute `mcp_tool` hook handlers through the session's shared MCP runtime, including managed hook configurations.
- Restrict hook calls to already-connected, cataloged, and policy-allowed tools. Unavailable servers fail immediately without starting or reconnecting them.
- Pass session metadata to hook tools, cap hook timeouts by the server timeout, and invoke hooks without model-tool approval or recursive hook dispatch.
- Record handler type and execution mode in hook telemetry, and mark memory as externally influenced after successful or blocking MCP hooks when configured.

## Testing

- Added end-to-end coverage for prompt interpolation, hidden tools, blocking decisions, unavailable servers, thread metadata, approval bypass, and memory-mode handling.
- Added MCP runtime coverage for startup readiness, tool filters, catalog revisions, and managed connector policy.

GitOrigin-RevId: 1647cb801ebc5fa385c7bda9d9c266a389c611b8

2026-08-18 22:10:43 +00:00

..

src

Enable MCP tool hooks in Codex sessions (#39296)

2026-08-18 22:10:43 +00:00

BUILD.bazel

Extract MCP into codex-mcp crate (#15919)

2026-04-01 19:03:26 -07:00

Cargo.toml

Expose runtime activity in server diagnostics (#37486)

2026-08-07 18:38:24 +00:00