codex

New Features

• Remote plugins are now enabled by default, with richer catalog rows, npm marketplace sources, and visible remote/local versions. (#30297, #26705, #29375, #30981)
• Codex can route authentication and Responses API traffic through macOS and Windows system proxies, including PAC and WPAD configurations. (#26708, #26709, #31335)
• Added codex remote-control pair for generating manual pairing codes from a running daemon. (#29913)
• Added Amazon Bedrock GPT-5.6 Sol, Terra, and Luna models, with first-class support for max reasoning effort. (#30285, #30467)
• MCP tools now use tool search by default, and ChatGPT-hosted MCP servers can explicitly use session authentication. (#29486, #29733)
• App-server clients can inspect environments, list descendant threads, and fork history through a specific turn. (#30291, #29591, #30277)

Bug Fixes

• Fixed Windows ConPTY input handling for line endings and backspace, plus sandbox credential retry edge cases. (#29734, #29624, #29637)
• Fixed stale TUI safety prompts and cancelled reviews that could leave MCP startup appearing busy. (#30490, #31189)
• Improved recovery when exec servers are temporarily offline and prevented remote-control token refresh retry storms. (#30098, #30201)
• Preserved trailing realtime transcript text and terminal rollout events during shutdown. (#29918, #30144)
• Improved incremental WebSocket request success by ignoring response metadata during comparisons. (#30770)
• Reduced installer failures from GitHub API rate limits by reusing release metadata. (#31056)

Documentation

• Documented UUID7 thread and turn IDs, plus recommended remote-executor integration-test workflows. (#27714, #29790)

Chores

• Updated OpenSSL, Hono, fast-uri, quick-xml, and crossbeam-epoch to address security advisories. (#29487, #29650, #30941, #31308)

Changelog

Full Changelog: https://github.com/openai/codex/compare/rust-v0.142.0...rust-v0.143.0

• #26708 PAC 3 - Add Windows system proxy resolver @canvrno-oai
• #28769 Register full CDP requirements feature @syuan-oai
• #29485 [codex] fetch featured IDs for remote plugins @ericning-o
• #29487 Upgrade bundled OpenSSL to 3.6.3 @jif-oai
• #29489 [codex] Update esbuild to 0.28.1 @pakrym-oai
• #29488 [plugins] Add dark-mode logo metadata @drewschuster-openai
• #29249 [codex] migrate environment context to model world state @pakrym-oai
• #29494 core: wrap token budget window context @bolinfest
• #29417 [codex] replace remote images with model-visible error text @rka-oai
• #28360 feat(core): store turn_id on ResponseItem metadata @owenlin0
• #29486 [codex] Use tool search for MCP tools by default @sayan-oai
• #29501 path-uri: clarify host-native path conversion @anp-oai
• #29504 fix: world state response item test @celia-oai
• #26704 TUI Plugin Sharing 4 - cover remote plugin catalog flows @canvrno-oai
• #29419 [codex] reject remote images at app-server ingress @rka-oai
• #28992 chore: improve expired Bedrock credential errors @celia-oai
• #29467 Make formatter output quiet on success @anp-oai
• #26709 PAC 4 - Add macOS system proxy resolver @canvrno-oai
• #29490 chore: warn when Code Mode lacks model metadata @celia-oai
• #29493 mcp: accept foreign absolute cwd for remote stdio @anp-oai
• #29473 Propagate safety buffering treatment metadata @fc-oai
• #24092 [codex] Reject unlowered PowerShell AST regions @bookholt-oai
• #29155 [codex] Expose service tier and reasoning effort in OTEL @daniel-oai
• #29068 [codex] stylistic changes @rka-oai
• #29518 Remove redundant Codex Apps manager flag @aibrahim-oai
• #27946 [codex] Use input items for Responses Lite tools @rka-oai
• #29528 Centralize Codex Apps client handling @aibrahim-oai
• #29577 Handle additional tools in image URL validation @aibrahim-oai
• #29575 Remove redundant Codex Apps cache guard @aibrahim-oai
• #29583 Group Codex Apps client setup @aibrahim-oai
• #29358 Allow codex sandbox to consume MCP sandbox state @jif-oai
• #29599 Stop persisting bridged log events @jif-oai
• #29615 Fix Codex Apps auth elicitation hang @jif-oai
• #29067 Namespace multi-agent v2 tools under collaboration @jif-oai
• #29614 path-uri: add lexical containment @jif-oai
• #28426 Share resumed rollout history @charliemarsh-oai
• #29634 Update rmcp to 1.8.0 @jif-oai
• #29650 Update vulnerable Hono and fast-uri dependencies @jif-oai
• #29498 [codex] Instrument rollout persistence bytes @wiltzius-openai
• #29659 [core] debounce current-time reminders by elapsed time @rka-oai
• #29608 Shut down superseded MCP managers on refresh @jif-oai
• #29527 core: use turn-owned world state for inline compaction @sayan-oai
• #29672 [codex] Handle additional tools in rollout persistence metrics @rka-oai
• #29669 Handle additional tools in rollout persistence metrics @winston-openai
• #29680 Revert "Handle additional tools in rollout persistence metrics" @rasmusrygaard
• #27714 app-server: document thread and turn IDs are UUID7 @owenlin0
• #29456 Prepare managed network sandbox context @jif-oai
• #28418 chore(core) rm AskForApproval::OnFailure @dylan-hurd-oai
• #29675 core: add extra metadata field to Thread struct @kumquatexpress
• #29013 Keep managed MITM CA private keys in proxy memory @winston-openai
• #29495 Separate local and remote plugin analytics IDs @jameswt-oai
• #29671 [codex] Preserve proxy state for filesystem sandbox helpers @iceweasel-oai
• #29513 [codex] allow image generation with provider auth @richardopenai
• #29526 core: resolve view_image paths in selected environment @anp-oai
• #29696 [codex] Fix stale approval policy in MCP test @sayan-oai
• #29704 [codex] Fix stale approval policy in MCP test @kumquatexpress
• #29547 core: use current step environments for tools @sayan-oai
• #28976 Add MCP tool call error metrics @stevenlee-oai
• #27045 feat(guardian): include connected account email in app reviews @viyatb-oai
• #29620 Decouple plugin manifest path resolution @jif-oai
• #29666 [codex] Report the exec-server working directory @rasmusrygaard
• #29705 feat(app-server): thread/turns/items/list -> thread/items/list @owenlin0
• #29716 code-mode: Rename codex_code_mode::CodeModeService @cconger
• #29712 test: branch on target OS instead of runner flavor @anp-oai
• #29728 core tests: rename automatic environment builder @anp-oai
• #29158 path-uri: remove legacy path deserialization @anp-oai
• #29519 core: persist initial context window metadata @bolinfest
• #28918 Make selected plugin roots URI-native @jif-oai
• #29515 [codex] define code mode host handshake protocol @cconger
• #29715 [codex] surface rollout budget exhaustion @rka-oai
• #29732 code-mode: Remove Session::is_alive() @cconger
• #29626 Load executor skills without host path conversion @jif-oai
• #29714 protocol: separate app and exec RPC ownership @anp-oai
• #29664 refactor: extract context window token status @bolinfest
• #29665 fix: scope context remaining to body window @bolinfest
• #29744 [codex] rename rollout budget error to session budget error @rka-oai
• #29739 Update new_context_window instructions @andmis
• #29743 core: reset context for token budget compaction @bolinfest
• #29477 Support thread-level originator overrides @alexsong-oai
• #29745 core: add wait_for_environment for starting environments @sayan-oai
• #28630 [codex] trace MCP startup latency @rphilizaire-openai
• #29750 chore: assign amsg_ IDs to agent messages @bolinfest
• #29746 test: add app-server auto environment helper @anp-oai
• #29711 Let image generation extension hosts control output persistence @won-openai
• #29762 [codex] Reuse compacted history replacement for new context windows @pakrym-oai
• #29768 [codex] Update bundled skill installer guidance @sayan-oai
• #29690 [plugins] Add marketplace source requirements @xl-openai
• #29765 [codex] Ignore local curated plugins when remote catalog is active @xl-openai
• #29767 [codex] Assign response item IDs in forked history @pakrym-oai
• #29721 auth: move domain mode below app wire types @anp-oai
• #29753 [plugins] Enforce marketplace source admission requirements @xl-openai
• #29722 config: own layer provenance types @anp-oai
• #29723 connectors: own app metadata types @anp-oai
• #29788 test: run app-server integration tests under Wine @anp-oai
• #29789 test: use automatic environments in app-server integration tests @anp-oai
• #29790 docs: document remote executor integration testing @anp-oai
• #29815 [codex] Remove auto-compaction opt-out @rhan-oai
• #29628 Keep executor plugin MCP paths URI-native @jif-oai
• #29731 [codex] Emit implicit skill usage for support reads @alexsong-oai
• #29829 Persist agent messages as response items @jif-oai
• #29841 Add a bounded filesystem walk RPC @jif-oai
• #29842 Use fs/walk for environment skill discovery @jif-oai
• #29567 [codex] show external import result counts @charlesgong-openai
• #29831 Cache plugin namespace during executor skill discovery @jif-oai
• #29720 ci: fail jobs that dirty the worktree @anp-oai
• #29887 Fix environment skill discovery after merge @jif-oai
• #29734 [codex] fix Windows ConPTY input handling @iceweasel-oai
• #28593 [codex] suppress low usage remaining warnings when credits are available @brooks-oai
• #29624 Preserve Windows sandbox identity during credential retry @jif-oai
• #27466 [codex] Trace exec-server JSON-RPC requests @richardopenai
• #29844 Follow directory symlinks in filesystem walks @jif-oai
• #29637 Skip credential refresh for WindowsApps launch failures @jif-oai
• #29591 feat(app-server): list descendant threads by ancestor @btraut-openai
• #28034 feat(network-proxy): experimental local credential broker @winston-openai
• #29736 [codex] Inject agent graph store into ThreadManager @wiltzius-openai
• #29889 [apps] Thread structured icon assets through app list @drewschuster-openai
• #29724 mcp: keep elicitation requests below app wire types @anp-oai
• #29684 [plugins] Track plugin install requests by ID @adaley-openai
• #29870 Pipeline bounded AGENTS.md and Git root probes @jif-oai
• #29893 [codex] dedupe remote control account header @shuo-openai
• #29851 Add a connector declaration snapshot @jif-oai
• #29903 path-uri: normalize parent segments in absolute joins @anp-oai
• #29852 Read connector declarations from executor plugins @jif-oai
• #29785 Isolate curated plugin sync Git environment @etraut-openai
• #29907 [codex] namespace sleep under clock @rka-oai
• #29910 [codex] nest sleep config under current time reminder @rka-oai
• #29913 feat(remote-control): add daemon pairing command @apanasenko-oai
• #29936 core: add configurable <context_window_guidance> message @bolinfest
• #26705 TUI Plugin Sharing 5 - polish remote plugin catalog rows @canvrno-oai
• #29733 Allow ChatGPT-hosted MCP servers to use session auth @aibrahim-oai
• #29833 [1/3] core: make world state snapshots serializable @sayan-oai
• #29919 TUI support for buffer experience @etraut-openai
• #29924 Represent MCP authentication with an enum @aibrahim-oai
• #29804 code-mode: define process host wire protocol @cconger
• #29956 [codex] Populate remote plugin local versions @abhinav-oai
• #29835 [2/3] core: persist world state in rollouts @sayan-oai
• #29899 [codex] Update reasoning effort @shijie-oai
• #29837 [3/3] core: replay persisted world state @sayan-oai
• #29969 Report MCP error codes with server attribution @aibrahim-oai
• #29970 core: raise token budget message limits @bolinfest
• #29973 [codex] route sleep through time providers @rka-oai
• #19051 feat: use run agent task auth for inference @adrian-openai
• #29810 core: make AGENTS.md react to environment changes @sayan-oai
• #29997 core: reconcile legacy WorldState sections @sayan-oai
• #29990 Parallelize environment skill loading @anp-oai
• #28522 Support HTTP MCP servers from selected executor plugins @jif-oai
• #28529 Support OAuth for HTTP MCP servers from selected executor plugins @jif-oai
• #29656 Test executor-routed MCP OAuth token exchange @jif-oai
• #29928 chore(app-server): mark thread/rollback as deprecated @owenlin0
• #29856 Persist selected capability roots and resolve availability per model step @jif-oai
• #27467 [codex] Record exec-server lifecycle metrics @richardopenai
• #29942 feat: add provider-aware model fallback to thread start @celia-oai
• #30095 cli: rename sandbox permission profile flag @bolinfest
• #30029 [codex] current time reminder interval to be set to 0 @rka-oai
• #29941 core: expose permission profile to shell tools @bolinfest
• #30031 [codex] add current time reminder delivery mode config @rka-oai
• #30098 [codex] Retry temporarily offline exec-server recovery @richardopenai
• #30033 [codex] impl delivery_mode: current time reminders on response boundaries @rka-oai
• #30108 [codex] extend code-mode host IPC transport @cconger
• #27470 [codex] Observe remote exec-server lifecycle @richardopenai
• #30113 [codex] poll external clock during sleep @rka-oai
• #29003 feat(core, mcp): cache codex_apps tools in memory @owenlin0
• #30114 release: publish standalone zsh artifacts @bolinfest
• #30116 release: consume standalone zsh artifacts @bolinfest
• #29648 [codex] Add managed MCP server matchers @felixxia-oai
• #30100 Let extensions contribute World State sections @jif-oai
• #30124 fix(app-server): suppress TUI rollback warning @fcoury-oai
• #29877 [codex] Surface MCP reauthentication-required startup failures @felixxia-oai
• #29988 Recognize Work web and mobile thread originators @chiam-oai
• #30110 [codex] add code-mode host failure supervision hooks @cconger
• #30088 Project executor skills through World State @jif-oai
• #30117 [codex] Propagate traces through exec-server HTTP @wiltzius-openai
• #30101 Pin MCP runtimes to model steps @jif-oai
• #30134 ci: narrow Windows test skips @anp-oai
• #30093 Project selected plugin runtime by environment availability @jif-oai
• #30145 Reuse walk inventory for environment skill metadata @jif-oai
• #30111 [codex] implement standalone code-mode process host @cconger
• #29935 [codex] Attribute app-server analytics by thread originator @alexsong-oai
• #30152 Reinject missing World State fragments on resume @jif-oai
• #30127 Keep MCP elicitation routable across runtime refreshes @jif-oai
• #29934 Expose MCP app identity in app context @martinauyeung-oai
• #29909 [codex] allow CCA image generation and web search extensions @won-openai
• #30157 Test selected capabilities across availability and resume @jif-oai
• #30144 [codex] fix terminal rollout event durability @wiltzius-openai
• #29920 Retry failed Codex Apps MCP startup @kbazzi
• #29516 Persist Cloudflare affinity cookies for MCP HTTP @stevenlee-oai
• #30112 [codex] add process-owned code-mode session client @cconger
• #30142 [codex] wire process-owned code mode host into core @cconger
• #30198 [codex] fix CreateThreadParams test initializer @anp-oai
• #30148 Reuse MCP runtimes when selected availability changes nothing @jif-oai
• #30215 Test selected capabilities across unavailable resume @jif-oai
• #29991 [codex] narrow unused skills intro export @aibrahim-oai
• #30229 Relax hooks.json top-level metadata validation @charlesgong-openai
• #29927 feat(app-server): add history_mode to thread @owenlin0
• #30276 fix main @owenlin0
• #29683 [codex] Add managed new-thread model settings @hefuc-oai
• #30225 Overlap executor skill reads with namespace discovery @jif-oai
• #30274 [codex] allow AGENTS.md and skills to authorize delegation @charlesdu-openai
• #30147 [codex] Use managed defaults for TUI threads @hefuc-oai
• #30261 ensure thread.history_mode is immutable @owenlin0
• #30277 feat(app-server): add optional turn_id to thread/fork @owenlin0
• #30143 Let Codex consult user-level code-review-* skills. @anp-oai
• #30285 feat: add GPT-5.6 variants to Bedrock catalog @celia-oai
• #30173 Close thread persistence when submission channel closes @alfozan
• #30257 [codex] Classify nested MCP authentication startup errors @felixxia-oai
• #29375 [codex] Support npm marketplace plugin sources @charlesgong-openai
• #30146 [codex] group blocking and postmerge CI workflows @anp-oai
• #30282 feat(protocol): define missing rollout turn items @owenlin0
• #30201 fix(remote-control): avoid server token refresh retry storms @apanasenko-oai
• #30273 [codex] consume pushed exec-server process events @richardopenai
• #30286 core: overlap diff root discovery with world state @anp-oai
• #30314 app-server: structure and test JSON shutdown logs @bolinfest
• #30317 Update security check wording @etraut-openai
• #30302 Preserve namespaces on custom tool calls @nhamidi-oai
• #30327 core: stabilize synthesized call output IDs @bolinfest
• #30291 [app-server] expose environment info RPC @maxj-oai
• #29691 [plugins] Enforce marketplace source policy at runtime @xl-openai
• #30384 [app-server] increase currentTime/read timeout @rka-oai
• #30297 [codex] Enable remote plugins by default @xl-openai
• #30490 fix(tui): clear completed safety buffering prompt @fcoury-oai
• #29740 [codex] Use model metadata for skills usage instructions @ani-oai
• #30511 [codex] Restore v1 delegation guidance @aibrahim-oai
• #30508 Revert "Make auto-review on-request prompt more proactive" @dylan-hurd-oai
• #30467 [codex] Treat max as a first-class reasoning effort @shijie-oai
• #30491 Update safety check links @etraut-openai
• #30607 [codex] auto-label AWS Bedrock issues @etraut-openai
• #30269 [codex] disable Nagle on Rendezvous WebSockets @richardopenai
• #30645 [codex] Update safety notice wording @etraut-openai
• #30757 fix(core) Remove full text websocket trace @dylan-hurd-oai
• #30851 docs: add tag to fenced code block @bolinfest
• #30643 [codex] bound Rendezvous WebSocket liveness @richardopenai
• #30867 Consolidate multi-agent v2 communication sends @bolinfest
• #30872 Log multi-agent communication lifecycle @bolinfest
• #30883 [codex] emit per-request TTFT completion telemetry @xli-oai
• #30897 Fix inherited availability metadata for Bedrock models @shijie-oai
• #30941 fix: address quick-xml security advisories @bolinfest
• #30770 fix(websockets) ignore metadata for incremental requests @dylan-hurd-oai
• #30334 telemetry: log structured direct tool-call timing @bolinfest
• #30493 [codex] Add configurable multi-agent mode hint text @shijie-oai
• #30796 Fix MIME types for path-backed feedback attachments @btraut-openai
• #31056 fix(install): reuse GitHub release metadata @bolinfest
• #30981 [codex] expose remote plugin versions @ericning-o
• #31066 chore: remove unused git-cliff configuration @bolinfest
• #31064 [codex] Read buffering metadata from response events @fc-oai
• #30223 Make plugin guidance react to environment readiness @sayan-oai
• #31189 Fix cancelled review leaving MCP startup busy @charliemarsh-oai
• #30876 [core] Support interleaved response items @alexi-openai
• #31262 [codex] Read retry model from buffering events @fc-oai
• #31261 Revert "[core] Support interleaved response items" @alexi-openai
• #31253 Emit exec-policy warnings for freshly loaded thread config @etraut-openai
• #31179 Remove TUI exec-policy core exports @etraut-openai
• #29959 Conditional codex_home dotenv @canvrno-oai
• #30627 elicitations: Move to shared ElicitationService @cconger
• #30318 core: trace executor skill discovery @anp-oai
• #31276 Revert "Conditional codex_home dotenv" @canvrno-oai
• #30956 refactor(protocol): isolate legacy item fanout @owenlin0
• #30395 [app-server] Include reset-credit details in rate limits @jayp-oai
• #31267 chore(approvals) consolidate guardian calls for shell tools @dylan-hurd-oai
• #31252 [tui] Truncate hook context in conversation history @abhinav-oai
• #29918 [codex] Flush trailing realtime transcript tail @guinness-oai
• #30226 Make Apps guidance react to MCP availability @sayan-oai
• #31190 Use popup token ranges for autocomplete insertion @charliemarsh-oai
• #29697 fix: attribut network requests to the exact exec on linux @jif-oai
• #31303 feat(code-mode): allow disabling V8 JIT @cconger
• #31271 chore: use .worktreeinclude for user Bazel config @anp-oai
• #31308 fix: update crossbeam-epoch for RUSTSEC-2026-0204 @cconger
• #30202 [codex] bundle code mode host in release packages @cconger
• #31293 [codex] app-server: expose plugin install policy source @ericning-o
• #31318 ci: share common workflow setup @anp-oai
• #29992 app-server: cover selected environments in integration tests @anp-oai
• #31284 Warn when configured service tiers are unsupported @etraut-openai
• #31323 Extract shared HTTP transport into codex-http-client @bolinfest
• #31331 Migrate direct HTTP consumers to codex-http-client @bolinfest
• #31337 fix: restore Codex environment setup table @anp-oai
• #31188 Preserve managed exec policy after rules parse errors @etraut-openai
• #31306 [codex] Support sequential cutoff reasoning summaries @ashwinnathan-openai
• #31344 exec-server: use virtual time in Noise relay test @bolinfest
• #31296 refactor(protocol): map canonical tool items to legacy events @owenlin0
• #31335 core: route Responses API through system proxy @bolinfest