OpenAI Codex CLI rust-v0.81.0

OpenAI Codex CLI rust-v0.81.0 was released on January 14, 2026.

Summary

New Features - Default API model moved to gpt-5.2-codex. (9188) - The codex tool in codex mcp-server now includes the threadId in the response so it can be used with the codex-reply tool, fixing 37...

Release Notes

New Features - Default API model moved to gpt-5.2-codex. (9188) - The codex tool in codex mcp-server now includes the threadId in the response so it can be used with the codex-reply tool, fixing 3712. The documentation has been updated at https://developers.openai.com/codex/guides/agents-sdk/. (9192) - Headless runs now switch to device-code login automatically so sign-in works without a browser. (8756) - Linux sandbox can mount paths read-only to better protect files from writes. (9112) - Support partial tool calls rendering in tui Bug Fixes - Alternate-screen handling now avoids breaking Zellij scrollback and adds a config/flag to control it. (8555) - Windows correctly prompts before unsafe commands when running with a read-only sandbox policy. (9117) - Config.toml and rules parsing errors are reported to app-server clients/TUI instead of failing silently. (9182, 9011) - Worked around a macOS system-configuration crash in proxy discovery. (8954) - Invalid user image uploads now surface an error instead of being silently replaced. (9146) Documentation - Published a generated JSON Schema for config.toml in docs/ to validate configs. (8956) - Documented the TUI paste-burst state machine for terminals without reliable bracketed paste. (9020) Chores - Added Bazel build support plus a just bazel-codex helper for contributors. (8875, 9177) Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.80.0...rust-v0.81.0 - 8756 [device-auth] When headless environment is detected, show device login flow instead. @mzeng-openai - 8930 feat: first pass on clb tool @jif-oai - 8966 nit: rename session metric @jif-oai - 8969 chore: non mutable btree when building specs @jif-oai - 8968 chore: move otel provider outside of trace module @jif-oai - 8973 chore: add mcp call metric @jif-oai - 8970 chore: add approval metric @jif-oai - 8975 chore: metrics tool call @jif-oai - 8901 chore: update metrics temporality @jif-oai - 8954 Work around crash in system-configuration library @etraut-openai - 8873 fix(app-server): set originator header from initialize JSON-RPC request @owenlin0 - 8909 Add config to disable /feedback @gt-oai - 8985 chore: nuke telemetry file @jif-oai - 8986 Revert "fix(app-server): set originator header from initialize JSON-RPC request" @jif-oai - 8978 nit: rename to analyticsenabled @jif-oai - 8963 renaming: task to turn @jif-oai - 8555 fix: add tui.alternatescreen config and --no-alt-screen CLI flag for Zellij scrollback @hjanuschka - 8875 feat: add support for building with Bazel @zbarsky-openai - 8988 fix(app-server): set originator header from initialize (re-revert) @owenlin0 - 8766 fix: harden arg0 helper PATH handling @viyatb-oai - 8949 Log unhandled sse events @pakrym-oai - 8996 Add hierarchical agent prompt @pakrym-oai - 9003 Delete announcementtip.toml @pakrym-oai - 8940 Refactor remote models tests to use TestCodex builder @aibrahim-oai - 8981 Add model provider info to /status if non-default @gt-oai - 8984 Add URL to responses error messages @gt-oai - 9008 fix: add .git to .bazelignore @bolinfest - 9010 fix: include AGENTS.md as repo root marker for integration tests @bolinfest - 8950 Label attached images so agent can understand in-message labels @charley-oai - 9032 Revert "Delete announcementtip.toml" @jif-oai - 9018 fix: support remote arm64 builds, as well @zbarsky-openai - 8983 feat: testing harness for collab 1 @jif-oai - 9088 feat: add wait tool implementation for collab @jif-oai - 9090 feat: add close tool implementation for collab @jif-oai - 8971 add static mcp callback uri support @WhammyLeaf - 9099 nit: add docstring @jif-oai - 8994 feat: wire fork to codex cli @apanasenko-oai - 9071 chore(deps): bump tui-scrollbar from 0.2.1 to 0.2.2 in /codex-rs @dependabot - 9072 chore(deps): bump ts-rs from 11.0.1 to 11.1.0 in /codex-rs @dependabot - 9074 chore(deps): bump which from 6.0.3 to 8.0.0 in /codex-rs @dependabot - 9075 chore(deps): bump clap from 4.5.53 to 4.5.54 in /codex-rs @dependabot - 9076 chore(deps): bump tokio-util from 0.7.16 to 0.7.18 in /codex-rs @dependabot - 8957 feat: hot reload mcp servers @shijie-oai - 9107 Remove unused conversationid header @pakrym-oai - 9080 Add some tests for image attachments @charley-oai - 9114 Extract single responses SSE event parsing @pakrym-oai - 8961 Assemble sandbox/approval/network prompts dynamically @aibrahim-oai - 9102 Add model client sessions @pakrym-oai - 8246 fix(tui): show in-flight coalesced tool calls in transcript overlay @Chriss4123 - 9127 Reuse websocket connection @pakrym-oai - 9117 fix: prompt for unsafe commands on Windows @bolinfest - 9128 Websocket append support @pakrym-oai - 9077 Send message by default mid turn. queue messages by tab @aibrahim-oai - 9049 Handle image paste from empty paste events @aibrahim-oai - 8952 Use markdown for migration screen @aibrahim-oai - 9109 Updated heuristic for tool call summary to detect file modifications @etraut-openai - 9138 Show tab queue hint in footer @aibrahim-oai - 9140 Use thread rollback for Esc backtrack @aibrahim-oai - 9143 chore: better error handling on collab tools @jif-oai - 9147 nit: collab send input cleaning @jif-oai - 9129 Support response.done and add integration tests @pakrym-oai - 8798 ollama: default to Responses API for built-ins @drifkin - 8956 add generated jsonschema for config.toml @sayan-oai - 9122 Fix queued messages during /review @charley-oai - 9126 fix: drop session span at end of the session @apanasenko-oai - 9101 Restrict MCP servers from requirements.toml @gt-oai - 9020 fix(tui): document paste-burst state machine @joshka-oai - 9118 feat(app-server): add an --analytics-default-enabled flag @owenlin0 - 9130 Fresh tooltips @mzeng-openai - 9134 fix(windows-sandbox-rs) bump SETUPVERSION @dylan-hurd-oai - 9121 test(tui): add deterministic paste-burst tests @joshka-oai - 8661 Fix spinner/Esc interrupt when MCP startup completes mid-turn @2mawi2 - 9165 Allow close skill popup with esc. @xl-openai - 9169 Fix flakiness in WebSocket tests @pakrym-oai - 9011 fix: report an appropriate error in the TUI for malformed rules @bolinfest - 9166 fix: integration test for 9011 @bolinfest - 9177 feat: add bazel-codex entry to justfile @bolinfest - 9175 WebSocket test server script @pakrym-oai - 9136 Update models.json @github-actions - 9168 clean models manager @aibrahim-oai - 8933 [CODEX-4427] improve parsed commands @aibrahim-oai - 9174 Renew cache ttl on etag match @aibrahim-oai - 9124 fix(tui): harden paste-burst state transitions @joshka-oai - 9186 Use offline cache for tui migrations @aibrahim-oai - 9182 Improve handling of config and rules errors for app server clients @etraut-openai - 8997 chore: clarify default shell for unifiedexec @sayan-oai - 9192 feat: add threadId to MCP server messages @bolinfest - 9188 change api default model @aibrahim-oai - 9150 feat: add sourcing of rc files to shell snapshot @jif-oai - 9155 fix: shell snapshot clean-up @jif-oai - 9146 feat: return an error if the image sent by the user is a bad image @jif-oai - 9197 feat: only source shell snapshot if the file exists @jif-oai - 9145 fix: drop double waiting header in TUI @jif-oai - 9194 Render exec output deltas inline @aibrahim-oai - 9156 chore: clamp min yield time for empty writestdin @jif-oai - 9105 feat: add auto refresh on thread listeners @jif-oai - 9112 feat: add support for read-only bind mounts in the linux sandbox @viyatb-oai - 9179 Use current model for review @pakrym-oai

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