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OpenAICodex CLI

Codex CLI 0.151.0

3 new6 fixes2 other

AI summary

Written by AI from the official notes. Check them for exact details.

Codex CLI 0.151.0 introduces new features for tool discovery and plugin management, along with several bug fixes.

  • Configurable grace period for discovering tools from MCP servers.
  • Extensions can inspect or replace MCP tool results.
  • Plugin catalogs now combine configuration and report invalid marketplaces.

Why it matters: Developers using Codex CLI should update to utilize improved tool management and bug fixes.

Official notes on developers.openai.com

Full release notes11 changes

New Features

  • Added a configurable grace period for discovering tools from optional MCP servers.
  • Extensions can now inspect or replace MCP tool results before they reach the model.
  • Plugin catalogs now combine per-repository configuration and report invalid project marketplaces without hiding valid plugins.

Bug Fixes

  • Preserved restored permission profiles across TUI turns and prevented /cd from weakening sandbox restrictions.
  • Kept tool availability and reasoning effort correct when switching models or falling back to another model.
  • Improved remote sandbox enforcement using the executor’s actual home directory, operating system, and path conventions.
  • Preserved structured MCP tool and resource errors in app-server responses.
  • Counted nested subagent token usage toward root goal budgets.
  • Prevented stale Guardian classifications from authorizing actions after permission state changes.

Chores

  • Added telemetry for escalated stdin reviews and remote executor MCP discovery.
  • Stabilized Guardian WebSocket and core fixture tests under slow or highly concurrent CI.