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OpenAI Codex CLI rust-v0.151.0

Released · OpenAI

What the release notes say

New Features

  • Added a configurable grace period for discovering tools from optional MCP servers. (#41199)

  • Extensions can now inspect or replace MCP tool results before they reach the model. (#41202)

  • Plugin catalogs now combine per-repository configuration and report invalid project marketplaces without hiding valid plugins. (#41208)

Bug Fixes

  • Preserved restored permission profiles across TUI turns and prevented /cd from weakening sandbox restrictions. (#41192)

  • Kept tool availability and reasoning effort correct when switching models or falling back to another model. (#41195, #41206)

  • Improved remote sandbox enforcement using the executor’s actual home directory, operating system, and path conventions. (#41196, #41204, #41207, #41209)

  • Preserved structured MCP tool and resource errors in app-server responses. (#41196)

  • Counted nested subagent token usage toward root goal budgets. (#41183)

  • Prevented stale Guardian classifications from authorizing actions after permission state changes. (#41196)

Chores

  • Added telemetry for escalated stdin reviews and remote executor MCP discovery. (#41189, #41205)

  • Stabilized Guardian WebSocket and core fixture tests under slow or highly concurrent CI. (#41191, #41194)

Changelog

Full Changelog: https://github.com/openai/codex/compare/rust-v0.150.0...rust-v0.151.0

  • #41183 Account subagent token usage toward root goals @copyberry

  • #41189 Instrument stdin review size checks @copyberry

  • #41191 Stabilize Guardian WebSocket tests @copyberry

  • #41192 Preserve restored permission profiles in TUI sessions @copyberry

  • #41193 Report affected capabilities from remote plugin syncs @copyberry

  • #41194 Harden core test fixture startup assertions @copyberry

  • #41195 Finalize model-specific tool plans in ToolRouter @copyberry

  • #41196 Improve sandboxing, MCP errors, and cached approvals @copyberry

  • #41199 Make the optional MCP startup grace configurable @copyberry

  • #41202 Let extensions process MCP tool results @copyberry

  • #41204 Propagate executor home directories into sandbox contexts @copyberry

  • #41205 Track executor MCP discovery telemetry @copyberry

  • #41206 Make Ultra reasoning fallback model-aware @copyberry

  • #41207 Propagate executor OS into turn environments @copyberry

  • #41208 Honor per-repository plugin configuration in catalog requests @copyberry

  • #41209 Align deny-read matching with executor path semantics @copyberry

Source: github.com ↗