The Codex Changelog

Codex CLI 0.164.0 enables the Amazon Bedrock setup wizard by default, making it easier to use detected AWS credentials or a Bedrock bearer token. We cover the Mantle endpoint, setup options for local use and CI, and practical caveats around regional model availability, token lifetimes, IAM permissions, and request costs—plus several smaller release improvements.

Codex 0.164.0 adds enterprise MCP authentication using eligible Codex account grants or dedicated sign-in, including support for OAuth clients that require secrets. Learn what to verify before configuring a gateway, plus caveats around remote MCP settings, token refresh, credential masking, and several useful CLI and session fixes.

Codex 0.164.0 adds inline arguments to /model and /permissions, letting you switch models, reasoning effort, speed, and permission profiles without navigating pickers. Learn a practical workflow for saving those combinations in /presets, plus caveats around unsupported settings and resumed sessions.

Also covered: credential masking in supported remote shell sessions, image previews for compatible terminals, preserved CLI configuration overrides, and fixes for queued prompts and failed compaction.

A closed background-compaction channel could leave a Codex app-server turn stuck in progress; learn the reported recovery steps and the fix associated with PR 55581, whose release availability is still unclear. We also cover an open report of queued input disappearing when pre-turn compaction is interrupted, plus notes on CLI voice disconnects, installer download-host selection, and GPT 5.5 retirement.

Codex’s new PromptCacheKey policy lets hosts keep session identity separate from prompt-cache routing. Learn how to choose a shared key for parallel subagents, omit the field for compatible gateways, and reapply the policy when resuming threads—plus caveats for cache hits and prompt consistency. Also: updates to fork-prefix preservation, authentication errors, Guardian metrics, and compaction recovery.

Codex 0.164.0 alpha adds a startup check for feature-flag mismatches between the CLI and its background daemon, replacing a silent fallback to embedded mode with a recovery prompt. Learn how to configure feature overrides and reconnect safely, including the warning that restarting a shared daemon can interrupt active subagents; the episode also covers improvements to TUI question rendering, picker ranking, remote reconnects, and Linux launcher security.

Codex’s new PreModelRequest and PostModelRequest hooks expose model-call lifecycle data, including retries, status, and reported token usage. Learn how to register an async logging hook, account for cancelled turns, and check build availability, plus smaller security and workflow updates.

An open bug report for Codex 0.163.0 describes sessions stuck on “Waiting for startup” when an unused provider’s command-based auth table omits cwd and the daemon’s startup directory has been deleted. Learn how to spot the risky config, choose a durable explicit cwd, and recover a stuck session; the episode also covers a prerelease terminal-input stall, a WSL2 resume workaround, and the new /side command.

Show Notes

• Releases · openai/codex - GitHub: https://github.com/openai/codex/releases
• 0.163.0: omitted provider auth.cwd panics on account/read after server ...: https://github.com/openai/codex/issues/55000

Codex CLI 0.164.0 alpha adds ten TUI prompt presets, opened with /presets or the default leader shortcut Ctrl+X, then p. Learn how to create, edit, and use presets—including session-setting snapshots—and how byte limits and shell-prefix validation affect what you can save.

The episode also notes that the alpha release pages contain no detailed notes, so the changes discussed are based on the commit list.

Codex 0.163.0 adds an interactive /config preferences manager for searching and changing supported settings, with indicators showing when a restart is required. Learn a safe workflow using /daemon to restart the managed server, plus what to verify with active work and named profiles. The episode also covers faster turn steering, configurable keymaps, parallel read-only lookups, restored approvals, network-proxy security fixes, and Windows clipboard improvements.

Show Notes

• Release 0.163.0 · openai/codex · GitHub: https://github.com/openai/codex/releases/tag/rust-v0.163.0