The Codex Changelog

Learn how the new auto_review.circuit_break_action setting adds a structured tooManyDenials signal when Guardian trips a denial limit, so orchestration code can distinguish policy lockouts from ordinary interruptions. We also cover how to wire the check into retries, audits, and manual review, plus the key caveats for older clients and event handling.

We unpack a fix that stops the local Codex TUI from silently overriding reasoning summary defaults, so model and server settings now take effect as intended. Plus: Windows Terminal key handling, provider capability cleanup, macOS code-signing support, and other recent Codex changes.

This episode breaks down Codex’s new MCP worktree tools—how create_worktree, get_worktree_creation_status, and list_worktrees let the agent isolate tasks without touching your active branch, plus the trust and persistence rules that govern them.

It also covers related October changes like smoother mouse scrolling, recovered prompt context, tmux hang fixes, improved copy shortcuts, and better Markdown and account-status handling.

Codex CLI 0.160.0 adds support for starting sessions outside a project with workspace defaults, plus restored permissions when resuming interrupted sessions. We also cover the practical workflow for scratch directories, policy caveats, and a handful of smaller fixes across TUI, Linux, Windows, and the sandbox.

Show Notes

• Releases · openai/codex - GitHub: https://github.com/openai/codex/releases

Codex 0.159.1 quietly changes the default model to GPT 6.1 Sol, bringing lower costs, a new service-tier behavior, and low default reasoning effort for faster sessions. We also cover the follow-up fixes in 0.159.2 and 0.159.3, plus the rollout caveats that could leave teams on older models without realizing it.

Show Notes

• Releases · openai/codex - GitHub: https://github.com/openai/codex/releases
• ChatGPT & Codex changelog: https://learn.chatgpt.com/docs/changelog

Codex 0.159.0 adds instant_interrupt, letting new input steer long-running responses without restarting the session, plus fixes for WebSocket continuity, Guardian reviews, and interruption notices. We also cover the release’s security hardening for .aws directories, retained filesystem denials, and the follow-up patch notes for 0.159.1 and 0.159.2.

Show Notes

• Releases · openai/codex - GitHub: https://github.com/openai/codex/releases

This episode breaks down the latest Codex Rust release, including support for confidential OAuth client secrets in MCP setups, so autonomous agents can authenticate with enterprise systems without browser-based login loops. It also covers fixes for Guardian review handling, elevated terminal approval, bearer token protection for WebSocket exec servers, and a handful of usability improvements in the fullscreen TUI.

We unpack a mysterious Codex CLI login loop after the 0.157.1 update, tracing it to a stale background daemon cache rather than a remote auth problem. Then we dig into how file descriptor exhaustion, orphaned sockets, and a packaging path change can make local tooling look far more broken than it really is.

This episode breaks down how Codex CLI 0.157.0 prevents lost work by preserving unsubmitted composer drafts after interruptions, plus fixes for draft recovery, async prompts, and stale notifications. It also covers quality-of-life upgrades like Shift-click transcript selection and a longer, more reliable file upload timeout.

Codex CLI 0.157.0 brings a background daemon for resilient interactive sessions, a recovery prompt for environment drift, and a new f shortcut to fork threads across apps. It also adds wider slash import support, better transcripts and uploads, and stricter network policy enforcement across redirects and ongoing traffic.