# Codex adds experimental thread/revert support > Source: > Published: 2026-08-13 21:58:21+00:00 # Commit 4343b2b Add app-server support for reverting paginated threads ( ## What changed - Add the experimental `thread/revert` request, which replaces a loaded paginated thread's durable history with the prefix before `beforeTurnId` while preserving the thread ID. - Interrupt any active turn, reload the replacement history without unloading the thread, preserve mutable thread settings, and emit `thread/reverted`. - Return backward pagination cursors for the retained turns and items, reject stale rollout paths after a revert, and document that local file changes are unaffected. ## Testing - Cover history replacement, pagination, stale paths, missing turns, subsequent turns, active-turn interruption, and preserved thread settings. GitOrigin-RevId: 435a8163ad4f310cc47219b436f6bdde21f2b83a[#38440](https://github.com/openai/codex/pull/38440)) ``` 1 parent 1992f8c commit 4343b2bCopy full SHA for 4343b2b ``` 24 files changed Lines changed: 939 additions & 21 deletions ## File tree - codex-rs - app-server-protocol - schema - json - v2 - precomputed - typescript - v2 - src/protocol - v2 - app-server - src - request_processors - tests/suite/v2 - core/src - tui/src - app - tests - chatwidget Lines changed: 31 additions & 0 deletions Some generated files are not rendered by default. Learn more about [customizing how changed files appear on GitHub.](https://docs.github.com/github/administering-a-repository/customizing-how-changed-files-appear-on-github)Lines changed: 33 additions & 0 deletions Some generated files are not rendered by default. Learn more about [customizing how changed files appear on GitHub.](https://docs.github.com/github/administering-a-repository/customizing-how-changed-files-appear-on-github)Lines changed: 33 additions & 0 deletions Some generated files are not rendered by default. Learn more about [customizing how changed files appear on GitHub.](https://docs.github.com/github/administering-a-repository/customizing-how-changed-files-appear-on-github)Lines changed: 13 additions & 0 deletions Some generated files are not rendered by default. Learn more about [customizing how changed files appear on GitHub.](https://docs.github.com/github/administering-a-repository/customizing-how-changed-files-appear-on-github)Binary file not shown. Binary file not shown. Lines changed: 2 additions & 1 deletion Some generated files are not rendered by default. Learn more about [customizing how changed files appear on GitHub.](https://docs.github.com/github/administering-a-repository/customizing-how-changed-files-appear-on-github)## 0 commit comments Comments (0)