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Assistants/OpenAI Codex CLI

OpenAI Codex CLI

OpenAI · cli agent · paid

Lightweight coding agent that runs in your terminal (Codex CLI).

agentcliopenaicodex
Website ↗Docs ↗
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Config files OpenAI Codex CLI has changed

Config you own — hooks, permission rules, MCP servers, settings — that releases below state a change to. Counted from the release notes we track, newest change first. How a harness is layered.

skills and plugins3 changes · 9 releases touched it · latest Sep 29, 2026 · rust-v0.159.0 ↗
agent context files3 changes · latest Oct 15, 2026 · rust-v0.163.0 ↗
MCP server config2 changes · 16 releases touched it · latest Sep 9, 2026 · rust-v0.154.0 ↗
permission rules2 changes · 6 releases touched it · latest Oct 15, 2026 · rust-v0.163.0 ↗
hooks1 change · 6 releases touched it · latest Oct 15, 2026 · rust-v0.163.0 ↗
sandbox settings1 change · 6 releases touched it · latest Aug 7, 2026 · rust-v0.147.0 ↗

Security advisories

2 published for Codex CLI, from the GitHub Advisory Database.

Release signals

OpenAI Codex CLIrust-v0.160.0Oct 1, 2026

Browse older tasks in the agent command center with a keyboard-accessible “Show more” action. (#49106)

  • Select transcript text and paste with middle-click in fullscreen mode on supported local Linux X11 terminals. (#49112)
  • Start sessions outside a project with workspace defaults when policy permits, and restore saved permissions when resuming. (#49160)
  • Added opt-in Guardian review capabilities to retrieve earlier user instructions and include context from agent handoffs. (#49036, #49057)
  • +64 more changes
Read the full release note

New Features

  • Browse older tasks in the agent command center with a keyboard-accessible “Show more” action. (#49106)

  • Select transcript text and paste with middle-click in fullscreen mode on supported local Linux X11 terminals. (#49112)

  • Start sessions outside a project with workspace defaults when policy permits, and restore saved permissions when resuming. (#49160)

  • Added opt-in Guardian review capabilities to retrieve earlier user instructions and include context from agent handoffs. (#49036, #49057)

Bug Fixes

  • Unsent queued messages now resume after reconnection once uncertain submissions are resolved, avoiding duplicate sends. (#49105)

  • The terminal UI now preserves server provider, reasoning-summary, and verbosity settings and shows the correct sessions in resume and fork history. (#49144, #49161, #49171)

  • Fixed Windows sandbox PowerShell fallbacks and long-path permission repairs, and suppressed unwanted console windows from background helpers. (#49019, #49058, #49098, #49164, #49386)

  • Subagents now retain environments that are still starting and receive their configuration or preparation failure. (#49075)

Excerpt ends here — this release continues at the source ↗.

Primary source ↗

Polled sources

[openai-developers] OpenAI Developers Codex

Product page · not polled

https://developers.openai.com/codex

[github-releases] GitHub Releases

GitHub Releases · last read Oct 24, 2026

https://github.com/openai/codex/releases