OpenAI Codex CLI rust-v0.88.0

OpenAI Codex CLI rust-v0.88.0 was released on .

Summary

New Features - Added device-code auth as a standalone fallback in headless environments. (9333) Bug Fixes - Load configs from trusted folders only and fix symlinked config.toml resolution. (9533, 9...

Release Context

  • This was the 9th OpenAI Codex CLI release of 2026 tracked by Havoptic.
  • It shipped 5 days after OpenAI Codex CLI rust-v0.87.0 (January 16, 2026).

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

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Release Notes

New Features - Added device-code auth as a standalone fallback in headless environments. (9333) Bug Fixes - Load configs from trusted folders only and fix symlinked config.toml resolution. (9533, 9445) - Fixed Azure endpoint invalid input errors. (9387) - Resolved a memory leak in core runtime. (9543) - Prevented interrupted turns from repeating. (9043) - Fixed WSL TUI image paste regression. (9473) Documentation - Updated MCP documentation link to the current destination. (9490) - Corrected a “Multi-agents” naming typo in docs. (9542) - Added developer instructions for collaboration modes. (9424) Chores - Upgraded to Rust 1.92 and refreshed core Rust dependencies. (8860, 9465, 9466, 9467, 9468, 9469) Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.87.0...rust-v0.88.0 - 9373 fix: flaky tests @jif-oai - 9333 [device-auth] Add device code auth as a standalone option when headless environment is detected. @mzeng-openai - 9352 Made codex exec resume --last consistent with codex resume --last @etraut-openai - 9324 add codex cloud list @nornagon-openai - 9332 Turn-state sticky routing per turn @aibrahim-oai - 9364 feat: tool call duration metric @jif-oai - 8860 chore: upgrade to Rust 1.92.0 @viyatb-oai - 9385 feat: /fork the current session instead of opening session picker @apanasenko-oai - 9247 feat(app-server, core): return threads by createdat or updatedat @owenlin0 - 9330 feat: show forked from session id in /status @apanasenko-oai - 9340 Introduce collaboration modes @aibrahim-oai - 9328 Support enable/disable skill via config/api. @xl-openai - 9408 Add collaborationmode override to turns @aibrahim-oai - 9400 fix(codex-api): treat invalidprompt as non-retryable @fouad-openai - 9401 Defer backtrack trim until rollback confirms @aibrahim-oai - 9414 fix unifiedexec::tests::unifiedexectimeouts to use a more unique match value @ahornby - 9421 Expose collaboration presets @aibrahim-oai - 9422 chore(core) Create instructions module @dylan-hurd-oai - 9423 chore(instructions) Remove unread SessionMeta.instructions field @dylan-hurd-oai - 9424 Add collaboration developer instructions @aibrahim-oai - 9425 Preserve slash command order in search @aibrahim-oai - 9059 tui: allow forward navigation in backtrack preview @slkzgm - 9443 Add collaboration modes test prompts @aibrahim-oai - 9457 fix(tui2): running /mcp was not printing any output until another event triggered a flush @bolinfest - 9445 Fixed symlink support for config.toml @etraut-openai - 9466 chore(deps): bump log from 0.4.28 to 0.4.29 in /codex-rs @dependabot - 9467 chore(deps): bump tokio from 1.48.0 to 1.49.0 in /codex-rs @dependabot - 9468 chore(deps): bump arc-swap from 1.7.1 to 1.8.0 in /codex-rs @dependabot - 9469 chore(deps): bump ctor from 0.5.0 to 0.6.3 in /codex-rs @dependabot - 9465 chore(deps): bump chrono from 0.4.42 to 0.4.43 in /codex-rs @dependabot - 9473 Fixed TUI regression related to image paste in WSL @etraut-openai - 9382 feat: timer total turn metrics @jif-oai - 9478 feat: close all threads in /new @jif-oai - 9477 feat: detach non-tty childs @jif-oai - 9479 prompt 3 @jif-oai - 9387 Fix invalid input error on Azure endpoint @etraut-openai - 9463 Remove unused protocol collaboration mode prompts @aibrahim-oai - 9487 chore: warning metric @jif-oai - 9490 Fixed stale link to MCP documentation @etraut-openai - 9461 TUI: collaboration mode UX + always submit UserTurn when enabled @aibrahim-oai - 9472 Feat: request user input tool @shijie-oai - 9402 Act on reasoning-included per turn @aibrahim-oai - 9496 chore: fix beta VS experimental @jif-oai - 9495 Feat: plan mode prompt update @shijie-oai - 9451 tui: avoid Esc interrupt when skill popup active @prateek-oai - 9497 Migrate tui to use UserTurn @aibrahim-oai - 9427 fix(core) Preserve baseinstructions in SessionMeta @dylan-hurd-oai - 9393 Persist text elements through TUI input and history @charley-oai - 9407 fix(tui) fix user message light mode background @dylan-hurd-oai - 9525 chore: collab in experimental @jif-oai - 9374 nit: do not render terminal interactions if no task running @jif-oai - 9529 feat: record timer with additional tags @jif-oai - 9528 feat: metrics on remote models @jif-oai - 9527 feat: metrics on shell snapshot @jif-oai - 9533 Only load config from trusted folders @gt-oai - 9409 feat: support proxy for ws connection @apanasenko-oai - 9507 Tui: use collaboration mode instead of model and effort @aibrahim-oai - 9193 fix: writableroots doesn't recognize home directory symbol in non-windows OS @tiffanycitra - 9542 Fix typo in feature name from 'Mult-agents' to 'Multi-agents' @simonw - 9459 feat(personality) introduce modelpersonality config @dylan-hurd-oai - 9543 fix: memory leak issue @jif-oai - 9509 Fixed config merging issue with profiles @etraut-openai - 9043 fix: prevent repeating interrupted turns @swordfish444 - 9553 fix(core): don't update the file's mtime on resume @owenlin0 - 9552 lookup system SIDs instead of hardcoding English strings. @iceweasel-oai - 9314 fix(windows-sandbox): deny .git file entries under writable roots @MaxMiksa - 9319 fix(windows-sandbox): parse PATH list entries for audit roots @MaxMiksa - 9547 merge remote models @aibrahim-oai - 9545 Add total (non-partial) TextElement placeholder accessors @charley-oai - 9532 fix(cli): add execute permission to bin/codex.js @zerone0x - 9162 Improve UI spacing for queued messages @charley-oai - 9554 Enable remote models @aibrahim-oai - 9558 queue only when task is working @aibrahim-oai - 8590 fix(core): require approval for force delete on Windows @hdcodedev - 9293 [codex-tui] exit when terminal is dumb @jmickey-oai - 9562 feat(tui2): add /experimental menu @joshka-oai - 9563 fix: bminor/bash is no longer on GitHub so use bolinfest/bash instead @bolinfest - 9568 Show session header before configuration @aibrahim-oai - 9555 feat: rename experimentalinstructionsfile to modelinstructionsfile @bolinfest - 9518 Prompt Expansion: Preserve Text Elements @charley-oai - 9560 Reject ask user question tool in Execute and Custom @charley-oai - 9575 feat: add skill injected counter metric @alexsong-oai - 9578 Feature to auto-enable websockets transport @pakrym-oai - 9587 fix CI by running pnpm @aibrahim-oai - 9586 don't ask for approval for just fix @aibrahim-oai - 9585 Add request-user-input overlay @aibrahim-oai - 9596 fix going up and down on questions after writing notes @aibrahim-oai - 9483 feat: max threads config @jif-oai - 9598 feat: display raw command on user shell @jif-oai - 9594 Added "codex." prefix to "conversation.turn.count" metric name @etraut-openai - 9600 feat: async shell snapshot @jif-oai - 9602 fix: nit tui on terminal interactions @jif-oai - 9551 nit: better collab tui @jif-oai

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