261 Commits

• Split features into codex-features crate (#15253)

  - Split the feature system into a new `codex-features` crate.
  - Cut `codex-core` and workspace consumers over to the new config and
  warning APIs.
  
  Co-authored-by: Ahmed Ibrahim <219906144+aibrahim-oai@users.noreply.github.com>
  Co-authored-by: Codex <noreply@openai.com>

  Ahmed Ibrahim · 2026-03-19 20:12:07 -07:00
  2e22885e79
• Move terminal module to terminal-detection crate (#15216)

  - Move core/src/terminal.rs and its tests into a standalone
  terminal-detection workspace crate.
  - Update direct consumers to depend on codex-terminal-detection and
  import terminal APIs directly.
  
  ---------
  
  Co-authored-by: Codex <noreply@openai.com>

  Ahmed Ibrahim · 2026-03-19 14:08:04 -07:00
  7eb19e5319
• Cleanup skills/remote/xxx endpoints. (#14977)

  Remote skills/remote/xxx as they are not in used for now.

  xl-openai · 2026-03-17 15:22:36 -07:00
  1a9555eda9
• Apply argument comment lint across codex-rs (#14652)

  ## Why
  
  Once the repo-local lint exists, `codex-rs` needs to follow the
  checked-in convention and CI needs to keep it from drifting. This commit
  applies the fallback `/*param*/` style consistently across existing
  positional literal call sites without changing those APIs.
  
  The longer-term preference is still to avoid APIs that require comments
  by choosing clearer parameter types and call shapes. This PR is
  intentionally the mechanical follow-through for the places where the
  existing signatures stay in place.
  
  After rebasing onto newer `main`, the rollout also had to cover newly
  introduced `tui_app_server` call sites. That made it clear the first cut
  of the CI job was too expensive for the common path: it was spending
  almost as much time installing `cargo-dylint` and re-testing the lint
  crate as a representative test job spends running product tests. The CI
  update keeps the full workspace enforcement but trims that extra
  overhead from ordinary `codex-rs` PRs.
  
  ## What changed
  
  - keep a dedicated `argument_comment_lint` job in `rust-ci`
  - mechanically annotate remaining opaque positional literals across
  `codex-rs` with exact `/*param*/` comments, including the rebased
  `tui_app_server` call sites that now fall under the lint
  - keep the checked-in style aligned with the lint policy by using
  `/*param*/` and leaving string and char literals uncommented
  - cache `cargo-dylint`, `dylint-link`, and the relevant Cargo
  registry/git metadata in the lint job
  - split changed-path detection so the lint crate's own `cargo test` step
  runs only when `tools/argument-comment-lint/*` or `rust-ci.yml` changes
  - continue to run the repo wrapper over the `codex-rs` workspace, so
  product-code enforcement is unchanged
  
  Most of the code changes in this commit are intentionally mechanical
  comment rewrites or insertions driven by the lint itself.
  
  ## Verification
  
  - `./tools/argument-comment-lint/run.sh --workspace`
  - `cargo test -p codex-tui-app-server -p codex-tui`
  - parsed `.github/workflows/rust-ci.yml` locally with PyYAML
  
  ---
  
  * -> #14652
  * #14651

  Michael Bolin · 2026-03-16 16:48:15 -07:00
  b77fe8fefe
• Add Smart Approvals guardian review across core, app-server, and TUI (#13860)

  ## Summary
  - add `approvals_reviewer = "user" | "guardian_subagent"` as the runtime
  control for who reviews approval requests
  - route Smart Approvals guardian review through core for command
  execution, file changes, managed-network approvals, MCP approvals, and
  delegated/subagent approval flows
  - expose guardian review in app-server with temporary unstable
  `item/autoApprovalReview/{started,completed}` notifications carrying
  `targetItemId`, `review`, and `action`
  - update the TUI so Smart Approvals can be enabled from `/experimental`,
  aligned with the matching `/approvals` mode, and surfaced clearly while
  reviews are pending or resolved
  
  ## Runtime model
  This PR does not introduce a new `approval_policy`.
  
  Instead:
  - `approval_policy` still controls when approval is needed
  - `approvals_reviewer` controls who reviewable approval requests are
  routed to:
    - `user`
    - `guardian_subagent`
  
  `guardian_subagent` is a carefully prompted reviewer subagent that
  gathers relevant context and applies a risk-based decision framework
  before approving or denying the request.
  
  The `smart_approvals` feature flag is a rollout/UI gate. Core runtime
  behavior keys off `approvals_reviewer`.
  
  When Smart Approvals is enabled from the TUI, it also switches the
  current `/approvals` settings to the matching Smart Approvals mode so
  users immediately see guardian review in the active thread:
  - `approval_policy = on-request`
  - `approvals_reviewer = guardian_subagent`
  - `sandbox_mode = workspace-write`
  
  Users can still change `/approvals` afterward.
  
  Config-load behavior stays intentionally narrow:
  - plain `smart_approvals = true` in `config.toml` remains just the
  rollout/UI gate and does not auto-set `approvals_reviewer`
  - the deprecated `guardian_approval = true` alias migration does
  backfill `approvals_reviewer = "guardian_subagent"` in the same scope
  when that reviewer is not already configured there, so old configs
  preserve their original guardian-enabled behavior
  
  ARC remains a separate safety check. For MCP tool approvals, ARC
  escalations now flow into the configured reviewer instead of always
  bypassing guardian and forcing manual review.
  
  ## Config stability
  The runtime reviewer override is stable, but the config-backed
  app-server protocol shape is still settling.
  
  - `thread/start`, `thread/resume`, and `turn/start` keep stable
  `approvalsReviewer` overrides
  - the config-backed `approvals_reviewer` exposure returned via
  `config/read` (including profile-level config) is now marked
  `[UNSTABLE]` / experimental in the app-server protocol until we are more
  confident in that config surface
  
  ## App-server surface
  This PR intentionally keeps the guardian app-server shape narrow and
  temporary.
  
  It adds generic unstable lifecycle notifications:
  - `item/autoApprovalReview/started`
  - `item/autoApprovalReview/completed`
  
  with payloads of the form:
  - `{ threadId, turnId, targetItemId, review, action? }`
  
  `review` is currently:
  - `{ status, riskScore?, riskLevel?, rationale? }`
  - where `status` is one of `inProgress`, `approved`, `denied`, or
  `aborted`
  
  `action` carries the guardian action summary payload from core when
  available. This lets clients render temporary standalone pending-review
  UI, including parallel reviews, even when the underlying tool item has
  not been emitted yet.
  
  These notifications are explicitly documented as `[UNSTABLE]` and
  expected to change soon.
  
  This PR does **not** persist guardian review state onto `thread/read`
  tool items. The intended follow-up is to attach guardian review state to
  the reviewed tool item lifecycle instead, which would improve
  consistency with manual approvals and allow thread history / reconnect
  flows to replay guardian review state directly.
  
  ## TUI behavior
  - `/experimental` exposes the rollout gate as `Smart Approvals`
  - enabling it in the TUI enables the feature and switches the current
  session to the matching Smart Approvals `/approvals` mode
  - disabling it in the TUI clears the persisted `approvals_reviewer`
  override when appropriate and returns the session to default manual
  review when the effective reviewer changes
  - `/approvals` still exposes the reviewer choice directly
  - the TUI renders:
  - pending guardian review state in the live status footer, including
  parallel review aggregation
    - resolved approval/denial state in history
  
  ## Scope notes
  This PR includes the supporting core/runtime work needed to make Smart
  Approvals usable end-to-end:
  - shell / unified-exec / apply_patch / managed-network / MCP guardian
  review
  - delegated/subagent approval routing into guardian review
  - guardian review risk metadata and action summaries for app-server/TUI
  - config/profile/TUI handling for `smart_approvals`, `guardian_approval`
  alias migration, and `approvals_reviewer`
  - a small internal cleanup of delegated approval forwarding to dedupe
  fallback paths and simplify guardian-vs-parent approval waiting (no
  intended behavior change)
  
  Out of scope for this PR:
  - redesigning the existing manual approval protocol shapes
  - persisting guardian review state onto app-server `ThreadItem`s
  - delegated MCP elicitation auto-review (the current delegated MCP
  guardian shim only covers the legacy `RequestUserInput` path)
  
  ---------
  
  Co-authored-by: Codex <noreply@openai.com>

  Charley Cunningham · 2026-03-13 15:27:00 -07:00
  bc24017d64
• feat: support disabling bundled system skills (#13792)

  Support disable bundled system skills with a config:
  
  [skills.bundled]
  enabled = false

  xl-openai · 2026-03-09 22:02:53 -07:00
  0c33af7746
• start of hooks engine (#13276)

  (Experimental)
  
  This PR adds a first MVP for hooks, with SessionStart and Stop
  
  The core design is:
  
  - hooks live in a dedicated engine under codex-rs/hooks
  - each hook type has its own event-specific file
  - hook execution is synchronous and blocks normal turn progression while
  running
  - matching hooks run in parallel, then their results are aggregated into
  a normalized HookRunSummary
  
  On the AppServer side, hooks are exposed as operational metadata rather
  than transcript-native items:
  
  - new live notifications: hook/started, hook/completed
  - persisted/replayed hook results live on Turn.hookRuns
  - we intentionally did not add hook-specific ThreadItem variants
  
  Hooks messages are not persisted, they remain ephemeral. The context
  changes they add are (they get appended to the user's prompt)

  Andrei Eternal · 2026-03-10 04:11:31 +00:00
  244b2d53f4
• Stabilize shell approval MCP test (#14101)

  ## Summary
  - replace the Python-based file creation command in the MCP shell
  approval test with native platform commands
  - build the expected command string from the exact argv that the test
  sends
  
  ## Why this fixes the flake
  The old test depended on Python startup and shell quoting details that
  varied across runners. The new version still verifies the same approval
  flow, but it uses `touch` on Unix and `New-Item` on Windows so the
  assertion only depends on the MCP shell command that Codex actually
  forwards.

  Ahmed Ibrahim · 2026-03-09 11:18:26 -07:00
  203a70a191
• Add request permissions tool (#13092)

  Adds a built-in `request_permissions` tool and wires it through the
  Codex core, protocol, and app-server layers so a running turn can ask
  the client for additional permissions instead of relying on a static
  session policy.
  
  The new flow emits a `RequestPermissions` event from core, tracks the
  pending request by call ID, forwards it through app-server v2 as an
  `item/permissions/requestApproval` request, and resumes the tool call
  once the client returns an approved subset of the requested permission
  profile.

  Jack Mousseau · 2026-03-08 20:23:06 -07:00
  e6b93841c5
• app-server: include experimental skill metadata in exec approval requests (#13929)

  ## Summary
  
  This change surfaces skill metadata on command approval requests so
  app-server clients can tell when an approval came from a skill script
  and identify the originating `SKILL.md`.
  
  - add `skill_metadata` to exec approval events in the shared protocol
  - thread skill metadata through core shell escalation and delegated
  approval handling for skill-triggered approvals
  - expose the field in app-server v2 as experimental `skillMetadata`
  - regenerate the JSON/TypeScript schemas and cover the new field in
  protocol, transport, core, and TUI tests
  
  ## Why
  
  Skill-triggered approvals already carry skill context inside core, but
  app-server clients could not see which skill caused the prompt. Sending
  the skill metadata with the approval request makes it possible for
  clients to present better approval UX and connect the prompt back to the
  relevant skill definition.
  
  
  ## example event in app-server-v2
  verified that we see this event when experimental api is on:
  ```
  < {
  <   "id": 11,
  <   "method": "item/commandExecution/requestApproval",
  <   "params": {
  <     "additionalPermissions": {
  <       "fileSystem": null,
  <       "macos": {
  <         "accessibility": false,
  <         "automations": {
  <           "bundle_ids": [
  <             "com.apple.Notes"
  <           ]
  <         },
  <         "calendar": false,
  <         "preferences": "read_only"
  <       },
  <       "network": null
  <     },
  <     "approvalId": "25d600ee-5a3c-4746-8d17-e2e61fb4c563",
  <     "availableDecisions": [
  <       "accept",
  <       "acceptForSession",
  <       "cancel"
  <     ],
  <     "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
  <     "commandActions": [
  <       {
  <         "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
  <         "type": "unknown"
  <       }
  <     ],
  <     "cwd": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes",
  <     "itemId": "call_jZp3xFpNg4D8iKAD49cvEvZy",
  <     "skillMetadata": {
  <       "pathToSkillsMd": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/SKILL.md"
  <     },
  <     "threadId": "019ccc10-b7d3-7ff2-84fe-3a75e7681e69",
  <     "turnId": "019ccc10-b848-76f1-81b3-4a1fa225493f"
  <   }
  < }`
  ```
  
  & verified that this is the event when experimental api is off:
  ```
  < {
  <   "id": 13,
  <   "method": "item/commandExecution/requestApproval",
  <   "params": {
  <     "approvalId": "5fbbf776-261b-4cf8-899b-c125b547f2c0",
  <     "availableDecisions": [
  <       "accept",
  <       "acceptForSession",
  <       "cancel"
  <     ],
  <     "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
  <     "commandActions": [
  <       {
  <         "command": "/Applications/ChatGPT.app/Contents/Resources/CodexAppServer_CodexAppServerBundledSkills.bundle/Contents/Resources/skills/apple-notes/scripts/notes_info",
  <         "type": "unknown"
  <       }
  <     ],
  <     "cwd": "/Users/celia/code/codex/codex-rs",
  <     "itemId": "call_OV2DHzTgYcbYtWaTTBWlocOt",
  <     "threadId": "019ccc16-2a2b-7be1-8500-e00d45b892d4",
  <     "turnId": "019ccc16-2a8e-7961-98ec-649600e7d06a"
  <   }
  < }
  ```

  Celia Chen · 2026-03-08 18:07:46 -07:00
  340f9c9ecb
• image-gen-event/client_processing (#13512)

  enabling client-side to process with image-generation capabilities
  (setting app-server)

  Won Park · 2026-03-04 16:54:38 -08:00
  229e6d0347
• [bazel] Bump rules_rs and llvm (#13366)

  # External (non-OpenAI) Pull Request Requirements
  
  Before opening this Pull Request, please read the dedicated
  "Contributing" markdown file or your PR may be closed:
  https://github.com/openai/codex/blob/main/docs/contributing.md
  
  If your PR conforms to our contribution guidelines, replace this text
  with a detailed and high quality description of your changes.
  
  Include a link to a bug report or enhancement request.

  zbarsky-openai · 2026-03-04 01:59:32 +00:00
  2d8c1575b8
• feat(app-server): propagate app-server trace context into core (#13368)

  ### Summary
  Propagate trace context originating at app-server RPC method handlers ->
  codex core submission loop (so this includes spans such as `run_turn`!).
  This implements PR 2 of the app-server tracing rollout.
  
  This also removes the old lower-level env-based reparenting in core so
  explicit request/submission ancestry wins instead of being overridden by
  ambient `TRACEPARENT` state.
  
  ### What changed
  - Added `trace: Option<W3cTraceContext>` to codex_protocol::Submission
  - Taught `Codex::submit()` / `submit_with_id()` to automatically capture
  the current span context when constructing or forwarding a submission
  - Wrapped the core submission loop in a submission_dispatch span
  parented from Submission.trace
  - Warn on invalid submission trace carriers and ignore them cleanly
  - Removed the old env-based downstream reparenting path in core task
  execution
  - Stopped OTEL provider init from implicitly attaching env trace context
  process-wide
  - Updated mcp-server Submission call sites for the new field
  
  Added focused unit tests for:
  - capturing trace context into Submission
  - preferring `Submission.trace` when building the core dispatch span
  
  ### Why
  PR 1 gave us consistent inbound request spans in app-server, but that
  only covered the transport boundary. For long-running work like turns
  and reviews, the important missing piece was preserving ancestry after
  the request handler returns and core continues work on a different async
  path.
  
  This change makes that handoff explicit and keeps the parentage rules
  simple:
  - app-server request span sets the current context
  - `Submission.trace` snapshots that context
  - core restores it once, at the submission boundary
  - deeper core spans inherit naturally
  
  That also lets us stop relying on env-based reparenting for this path,
  which was too ambient and could override explicit ancestry.

  Owen Lin · 2026-03-04 01:03:45 +00:00
  52521a5e40
• app-server service tier plumbing (plus some cleanup) (#13334)

  followup to https://github.com/openai/codex/pull/13212 to expose fast
  tier controls to app server
  (majority of this PR is generated schema jsons - actual code is +69 /
  -35 and +24 tests )
  
  - add service tier fields to the app-server protocol surfaces used by
  thread lifecycle, turn start, config, and session configured events
  - thread service tier through the app-server message processor and core
  thread config snapshots
  - allow runtime config overrides to carry service tier for app-server
  callers
  
  cleanup:
  - Removing useless "legacy" code supporting "standard" - we moved to
  None | "fast", so "standard" is not needed.

  pash-openai · 2026-03-03 02:35:09 -08:00
  07e532dcb9
• Enable analytics in codex exec and codex mcp-server (#13083)

  Addresses #12913
  
  `codex exec` was not correctly defaulting to Otel metrics to enabled 
  `codex mcp-server` completely lacked an Otel collector
  
  Summary:
  - default to enabling analytics when `codex exec` initializes
  OpenTelemetry so the CLI actually reports metrics again
  - add a regression test that proves the flag remains enabled by default
  - added Otel collector to `codex mcp-server`

  Eric Traut · 2026-02-27 19:22:54 -07:00
  83177ed7a8
• feat: include available decisions in command approval requests (#12758)

  Command-approval clients currently infer which choices to show from
  side-channel fields like `networkApprovalContext`,
  `proposedExecpolicyAmendment`, and `additionalPermissions`. That makes
  the request shape harder to evolve, and it forces each client to
  replicate the server's heuristics instead of receiving the exact
  decision list for the prompt.
  
  This PR introduces a mapping between `CommandExecutionApprovalDecision`
  and `codex_protocol::protocol::ReviewDecision`:
  
  ```rust
  impl From<CoreReviewDecision> for CommandExecutionApprovalDecision {
      fn from(value: CoreReviewDecision) -> Self {
          match value {
              CoreReviewDecision::Approved => Self::Accept,
              CoreReviewDecision::ApprovedExecpolicyAmendment {
                  proposed_execpolicy_amendment,
              } => Self::AcceptWithExecpolicyAmendment {
                  execpolicy_amendment: proposed_execpolicy_amendment.into(),
              },
              CoreReviewDecision::ApprovedForSession => Self::AcceptForSession,
              CoreReviewDecision::NetworkPolicyAmendment {
                  network_policy_amendment,
              } => Self::ApplyNetworkPolicyAmendment {
                  network_policy_amendment: network_policy_amendment.into(),
              },
              CoreReviewDecision::Abort => Self::Cancel,
              CoreReviewDecision::Denied => Self::Decline,
          }
      }
  }
  ```
  
  And updates `CommandExecutionRequestApprovalParams` to have a new field:
  
  ```rust
  available_decisions: Option<Vec<CommandExecutionApprovalDecision>>
  ```
  
  when, if specified, should make it easier for clients to display an
  appropriate list of options in the UI.
  
  This makes it possible for `CoreShellActionProvider::prompt()` in
  `unix_escalation.rs` to specify the `Vec<ReviewDecision>` directly,
  adding support for `ApprovedForSession` when approving a skill script,
  which was previously missing in the TUI.
  
  Note this results in a significant change to `exec_options()` in
  `approval_overlay.rs`, as the displayed options are now derived from
  `available_decisions: &[ReviewDecision]`.
  
  ## What Changed
  
  - Add `available_decisions` to
  [`ExecApprovalRequestEvent`](https://github.com/openai/codex/blob/de00e932dd9801de0a4faac0519162099753f331/codex-rs/protocol/src/approvals.rs#L111-L175),
  including helpers to derive the legacy default choices when older
  senders omit the field.
  - Map `codex_protocol::protocol::ReviewDecision` to app-server
  `CommandExecutionApprovalDecision` and expose the ordered list as
  experimental `availableDecisions` in
  [`CommandExecutionRequestApprovalParams`](https://github.com/openai/codex/blob/de00e932dd9801de0a4faac0519162099753f331/codex-rs/app-server-protocol/src/protocol/v2.rs#L3798-L3807).
  - Thread optional `available_decisions` through the core approval path
  so Unix shell escalation can explicitly request `ApprovedForSession` for
  session-scoped approvals instead of relying on client heuristics.
  [`unix_escalation.rs`](https://github.com/openai/codex/blob/de00e932dd9801de0a4faac0519162099753f331/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs#L194-L214)
  - Update the TUI approval overlay to build its buttons from the ordered
  decision list, while preserving the legacy fallback when
  `available_decisions` is missing.
  - Update the app-server README, test client output, and generated schema
  artifacts to document and surface the new field.
  
  ## Testing
  
  - Add `approval_overlay.rs` coverage for explicit decision lists,
  including the generic `ApprovedForSession` path and network approval
  options.
  - Update `chatwidget/tests.rs` and app-server protocol tests to populate
  the new optional field and keep older event shapes working.
  
  ## Developers Docs
  
  - If we document `item/commandExecution/requestApproval` on
  [developers.openai.com/codex](https://developers.openai.com/codex), add
  experimental `availableDecisions` as the preferred source of approval
  choices and note that older servers may omit it.

  Michael Bolin · 2026-02-26 01:10:46 +00:00
  14116ade8d
• Revert "Add skill approval event/response (#12633)" (#12811)

  This reverts commit https://github.com/openai/codex/pull/12633. We no
  longer need this PR, because we favor sending normal exec command
  approval server request with `additional_permissions` of skill
  permissions instead

  Celia Chen · 2026-02-26 01:02:42 +00:00
  4f45668106
• Enable request_user_input in Default mode (#12735)

  ## Summary
  - allow `request_user_input` in Default collaboration mode as well as
  Plan
  - update the Default-mode instructions to prefer assumptions first and
  use `request_user_input` only when a question is unavoidable
  - update request_user_input and app-server tests to match the new
  Default-mode behavior
  - refactor collaboration-mode availability plumbing into
  `CollaborationModesConfig` for future mode-related flags
  
  ## Codex author
  `codex resume 019c9124-ed28-7c13-96c6-b916b1c97d49`

  Charley Cunningham · 2026-02-25 15:20:46 -08:00
  2f4d6ded1d
• feat(app-server): add ThreadItem::DynamicToolCall (#12732)

  Previously, clients would call `thread/start` with dynamic_tools set,
  and when a model invokes a dynamic tool, it would just make the
  server->client `item/tool/call` request and wait for the client's
  response to complete the tool call. This works, but it doesn't have an
  `item/started` or `item/completed` event.
  
  Now we are doing this:
  - [new] emit `item/started` with `DynamicToolCall` populated with the
  call arguments
  - send an `item/tool/call` server request
  - [new] once the client responds, emit `item/completed` with
  `DynamicToolCall` populated with the response.
  
  Also, with `persistExtendedHistory: true`, dynamic tool calls are now
  reconstructable in `thread/read` and `thread/resume` as
  `ThreadItem::DynamicToolCall`.

  Owen Lin · 2026-02-25 12:00:10 -08:00
  a0fd94bde6
• feat: pass helper executable paths via Arg0DispatchPaths (#12719)

  ## Why
  
  `codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs` previously
  located `codex-execve-wrapper` by scanning `PATH` and sibling
  directories. That lookup is brittle and can select the wrong binary when
  the runtime environment differs from startup assumptions.
  
  We already pass `codex-linux-sandbox` from `codex-arg0`;
  `codex-execve-wrapper` should use the same startup-driven path plumbing.
  
  ## What changed
  
  - Introduced `Arg0DispatchPaths` in `codex-arg0` to carry both helper
  executable paths:
    - `codex_linux_sandbox_exe`
    - `main_execve_wrapper_exe`
  - Updated `arg0_dispatch_or_else()` to pass `Arg0DispatchPaths` to
  top-level binaries and preserve helper paths created in
  `prepend_path_entry_for_codex_aliases()`.
  - Threaded `Arg0DispatchPaths` through entrypoints in `cli`, `exec`,
  `tui`, `app-server`, and `mcp-server`.
  - Added `main_execve_wrapper_exe` to core configuration plumbing
  (`Config`, `ConfigOverrides`, and `SessionServices`).
  - Updated zsh-fork shell escalation to consume the configured
  `main_execve_wrapper_exe` and removed path-sniffing fallback logic.
  - Updated app-server config reload paths so reloaded configs keep the
  same startup-provided helper executable paths.
  
  ## References
  
  - [`Arg0DispatchPaths`
  definition](https://github.com/openai/codex/blob/e355b43d5c2a771f045296a6deae10d7c9c36ec6/codex-rs/arg0/src/lib.rs#L20-L24)
  - [`arg0_dispatch_or_else()` forwarding both
  paths](https://github.com/openai/codex/blob/e355b43d5c2a771f045296a6deae10d7c9c36ec6/codex-rs/arg0/src/lib.rs#L145-L176)
  - [zsh-fork escalation using configured wrapper
  path](https://github.com/openai/codex/blob/e355b43d5c2a771f045296a6deae10d7c9c36ec6/codex-rs/core/src/tools/runtimes/shell/unix_escalation.rs#L109-L150)
  
  ## Testing
  
  - `cargo check -p codex-arg0 -p codex-core -p codex-exec -p codex-tui -p
  codex-mcp-server -p codex-app-server`
  - `cargo test -p codex-arg0`
  - `cargo test -p codex-core tools::runtimes::shell::unix_escalation:: --
  --nocapture`

  Michael Bolin · 2026-02-24 17:44:38 -08:00
  e88f74d140
• feat(core) Introduce Feature::RequestPermissions (#11871)

  ## Summary
  Introduces the initial implementation of Feature::RequestPermissions.
  RequestPermissions allows the model to request that a command be run
  inside the sandbox, with additional permissions, like writing to a
  specific folder. Eventually this will include other rules as well, and
  the ability to persist these permissions, but this PR is already quite
  large - let's get the core flow working and go from there!
  
  <img width="1279" height="541" alt="Screenshot 2026-02-15 at 2 26 22 PM"
  src="https://github.com/user-attachments/assets/0ee3ec0f-02ec-4509-91a2-809ac80be368"
  />
  
  ## Testing
  - [x] Added tests
  - [x] Tested locally
  - [x] Feature

  Dylan Hurd · 2026-02-24 09:48:57 -08:00
  f6053fdfb3
• Add skill approval event/response (#12633)

  Set the stage for skill-level permission approval in addition to
  command-level.
  
  Behind a feature flag.

  pakrym-oai · 2026-02-23 22:28:58 -08:00
  58763afa0f
• feat(core): persist network approvals in execpolicy (#12357)

  ## Summary
  Persist network approval allow/deny decisions as `network_rule(...)`
  entries in execpolicy (not proxy config)
  
  It adds `network_rule` parsing + append support in `codex-execpolicy`,
  including `decision="prompt"` (parse-only; not compiled into proxy
  allow/deny lists)
  - compile execpolicy network rules into proxy allow/deny lists and
  update the live proxy state on approval
  - preserve requirements execpolicy `network_rule(...)` entries when
  merging with file-based execpolicy
  - reject broad wildcard hosts (for example `*`) for persisted
  `network_rule(...)`

  viyatb-oai · 2026-02-23 21:37:46 -08:00
  c3048ff90a
• chore: remove codex-core public protocol/shell re-exports (#12432)

  ## Why
  
  `codex-rs/core/src/lib.rs` re-exported a broad set of types and modules
  from `codex-protocol` and `codex-shell-command`. That made it easy for
  workspace crates to import those APIs through `codex-core`, which in
  turn hides dependency edges and makes it harder to reduce compile-time
  coupling over time.
  
  This change removes those public re-exports so call sites must import
  from the source crates directly. Even when a crate still depends on
  `codex-core` today, this makes dependency boundaries explicit and
  unblocks future work to drop `codex-core` dependencies where possible.
  
  ## What Changed
  
  - Removed public re-exports from `codex-rs/core/src/lib.rs` for:
  - `codex_protocol::protocol` and related protocol/model types (including
  `InitialHistory`)
    - `codex_protocol::config_types` (`protocol_config_types`)
  - `codex_shell_command::{bash, is_dangerous_command, is_safe_command,
  parse_command, powershell}`
  - Migrated workspace Rust call sites to import directly from:
    - `codex_protocol::protocol`
    - `codex_protocol::config_types`
    - `codex_protocol::models`
    - `codex_shell_command`
  - Added explicit `Cargo.toml` dependencies (`codex-protocol` /
  `codex-shell-command`) in crates that now import those crates directly.
  - Kept `codex-core` internal modules compiling by using `pub(crate)`
  aliases in `core/src/lib.rs` (internal-only, not part of the public
  API).
  - Updated the two utility crates that can already drop a `codex-core`
  dependency edge entirely:
    - `codex-utils-approval-presets`
    - `codex-utils-cli`
  
  ## Verification
  
  - `cargo test -p codex-utils-approval-presets`
  - `cargo test -p codex-utils-cli`
  - `cargo check --workspace --all-targets`
  - `just clippy`

  Michael Bolin · 2026-02-20 23:45:35 -08:00
  1af2a37ada
• Wire realtime api to core (#12268)

  - Introduce `RealtimeConversationManager` for realtime API management 
  - Add `op::conversation` to start conversation, insert audio, insert
  text, and close conversation.
  - emit conversation lifecycle and realtime events.
  - Move shared realtime payload types into codex-protocol and add core
  e2e websocket tests for start/replace/transport-close paths.
  
  Things to consider:
  - Should we use the same `op::` and `Events` channel to carry audio? I
  think we should try this simple approach and later we can create
  separate one if the channels got congested.
  - Sending text updates to the client: we can start simple and later
  restrict that.
  - Provider auth isn't wired for now intentionally

  Ahmed Ibrahim · 2026-02-20 19:06:35 -08:00
  6817f0be8a
• client side modelinfo overrides (#12101)

  TL;DR
  Add top-level `model_catalog_json` config support so users can supply a
  local model catalog override from a JSON file path (including adding new
  models) without backend changes.
  
  ### Problem
  Codex previously had no clean client-side way to replace/overlay model
  catalog data for local testing of model metadata and new model entries.
  
  ### Fix
  - Add top-level `model_catalog_json` config field (JSON file path).
  - Apply catalog entries when resolving `ModelInfo`:
    1. Base resolved model metadata (remote/fallback)
    2. Catalog overlay from `model_catalog_json`
  3. Existing global top-level overrides (`model_context_window`,
  `model_supports_reasoning_summaries`, etc.)
  
  ### Note
  Will revisit per-field overrides in a follow-up
  
  ### Tests
  Added tests

  sayan-oai · 2026-02-19 10:38:57 -08:00
  d54999d006
• feat(core): plumb distinct approval ids for command approvals (#12051)

  zsh fork PR stack:
  - https://github.com/openai/codex/pull/12051 👈 
  - https://github.com/openai/codex/pull/12052
  
  With upcoming support for a fork of zsh that allows us to intercept
  `execve` and run execpolicy checks for each subcommand as part of a
  `CommandExecution`, it will be possible for there to be multiple
  approval requests for a shell command like `/path/to/zsh -lc 'git status
  && rg \"TODO\" src && make test'`.
  
  To support that, this PR introduces a new `approval_id` field across
  core, protocol, and app-server so that we can associate approvals
  properly for subcommands.

  Owen Lin · 2026-02-18 01:55:57 +00:00
  db4d2599b5
• chore: rm remote models fflag (#11699)

  rm `remote_models` feature flag.
  
  We see issues like #11527 when a user has `remote_models` disabled, as
  we always use the default fallback `ModelInfo`. This causes issues with
  model performance.
  
  Builds on #11690, which helps by warning the user when they are using
  the default fallback. This PR will make that happen much less frequently
  as an accidental consequence of disabling `remote_models`.

  sayan-oai · 2026-02-17 11:43:16 -08:00
  41800fc876
• Feat: add model reroute notification (#12001)

  ### Summary
  Builiding off
  https://github.com/openai/codex/pull/11964/files/5c75aa7b89a70bc2cc410a6fd238749306ec4c5e#diff-058ae8f109a8b84b4b79bbfa45f522c2233b9d9e139696044ae374d50b6196e0,
  we have created a `model/rerouted` notification that captures the event
  so that consumers can render as expected. Keep the `EventMsg::Warning`
  path in core so that this does not affect TUI rendering.
  
  `model/rerouted` is meant to be generic to account for future usage
  including capacity planning etc.

  Shijie Rao · 2026-02-17 11:02:23 -08:00
  48018e9eac
• feat(core): add structured network approval plumbing and policy decision model (#11672)

  ### Description
  #### Summary
  Introduces the core plumbing required for structured network approvals
  
  #### What changed
  - Added structured network policy decision modeling in core.
  - Added approval payload/context types needed for network approval
  semantics.
  - Wired shell/unified-exec runtime plumbing to consume structured
  decisions.
  - Updated related core error/event surfaces for structured handling.
  - Updated protocol plumbing used by core approval flow.
  - Included small CLI debug sandbox compatibility updates needed by this
  layer.
  
  #### Why
  establishes the minimal backend foundation for network approvals without
  yet changing high-level orchestration or TUI behavior.
  
  #### Notes
  - Behavior remains constrained by existing requirements/config gating.
  - Follow-up PRs in the stack handle orchestration, UX, and app-server
  integration.
  
  ---------
  
  Co-authored-by: Codex <199175422+chatgpt-codex-connector[bot]@users.noreply.github.com>

  viyatb-oai · 2026-02-14 04:18:12 +00:00
  b527ee2890
• Bump rmcp to 0.15 (#11539)

  https://github.com/modelcontextprotocol/rust-sdk/pull/598 in 0.14 broke
  some MCP oauth (like Linear) and
  https://github.com/modelcontextprotocol/rust-sdk/pull/641 fixed it in
  0.15

  Gabriel Peal · 2026-02-11 22:04:17 -08:00
  bd3ce98190
• feat: make sandbox read access configurable with ReadOnlyAccess (#11387)

  `SandboxPolicy::ReadOnly` previously implied broad read access and could
  not express a narrower read surface.
  This change introduces an explicit read-access model so we can support
  user-configurable read restrictions in follow-up work, while preserving
  current behavior today.
  
  It also ensures unsupported backends fail closed for restricted-read
  policies instead of silently granting broader access than intended.
  
  ## What
  
  - Added `ReadOnlyAccess` in protocol with:
    - `Restricted { include_platform_defaults, readable_roots }`
    - `FullAccess`
  - Updated `SandboxPolicy` to carry read-access configuration:
    - `ReadOnly { access: ReadOnlyAccess }`
    - `WorkspaceWrite { ..., read_only_access: ReadOnlyAccess }`
  - Preserved existing behavior by defaulting current construction paths
  to `ReadOnlyAccess::FullAccess`.
  - Threaded the new fields through sandbox policy consumers and call
  sites across `core`, `tui`, `linux-sandbox`, `windows-sandbox`, and
  related tests.
  - Updated Seatbelt policy generation to honor restricted read roots by
  emitting scoped read rules when full read access is not granted.
  - Added fail-closed behavior on Linux and Windows backends when
  restricted read access is requested but not yet implemented there
  (`UnsupportedOperation`).
  - Regenerated app-server protocol schema and TypeScript artifacts,
  including `ReadOnlyAccess`.
  
  ## Compatibility / rollout
  
  - Runtime behavior remains unchanged by default (`FullAccess`).
  - API/schema changes are in place so future config wiring can enable
  restricted read access without another policy-shape migration.

  Michael Bolin · 2026-02-11 18:31:14 -08:00
  abbd74e2be
• feat: split codex-common into smaller utils crates (#11422)

  We are removing feature-gated shared crates from the `codex-rs`
  workspace. `codex-common` grouped several unrelated utilities behind
  `[features]`, which made dependency boundaries harder to reason about
  and worked against the ongoing effort to eliminate feature flags from
  workspace crates.
  
  Splitting these utilities into dedicated crates under `utils/` aligns
  this area with existing workspace structure and keeps each dependency
  explicit at the crate boundary.
  
  ## What changed
  
  - Removed `codex-rs/common` (`codex-common`) from workspace members and
  workspace dependencies.
  - Added six new utility crates under `codex-rs/utils/`:
    - `codex-utils-cli`
    - `codex-utils-elapsed`
    - `codex-utils-sandbox-summary`
    - `codex-utils-approval-presets`
    - `codex-utils-oss`
    - `codex-utils-fuzzy-match`
  - Migrated the corresponding modules out of `codex-common` into these
  crates (with tests), and added matching `BUILD.bazel` targets.
  - Updated direct consumers to use the new crates instead of
  `codex-common`:
    - `codex-rs/cli`
    - `codex-rs/tui`
    - `codex-rs/exec`
    - `codex-rs/app-server`
    - `codex-rs/mcp-server`
    - `codex-rs/chatgpt`
    - `codex-rs/cloud-tasks`
  - Updated workspace lockfile entries to reflect the new dependency graph
  and removal of `codex-common`.

  Michael Bolin · 2026-02-11 12:59:24 +00:00
  8b7f8af343
• chore: persist turn_id in rollout session and make turn_id uuid based (#11246)

  Problem:
  1. turn id is constructed in-memory;
  2. on resuming threads, turn_id might not be unique;
  3. client cannot no the boundary of a turn from rollout files easily.
  
  This PR does three things:
  1. persist `task_started` and `task_complete` events;
  1. persist `turn_id` in rollout turn events;
  5. generate turn_id as unique uuids instead of incrementing it in
  memory.
  
  This helps us resolve the issue of clients wanting to have unique turn
  ids for resuming a thread, and knowing the boundry of each turn in
  rollout files.
  
  example debug logs
  ```
  2026-02-11T00:32:10.746876Z DEBUG codex_app_server_protocol::protocol::thread_history: built turn from rollout items turn_index=8 turn=Turn { id: "019c4a07-d809-74c3-bc4b-fd9618487b4b", items: [UserMessage { id: "item-24", content: [Text { text: "hi", text_elements: [] }] }, AgentMessage { id: "item-25", text: "Hi. I’m in the workspace with your current changes loaded and ready. Send the next task and I’ll execute it end-to-end." }], status: Completed, error: None }
  2026-02-11T00:32:10.746888Z DEBUG codex_app_server_protocol::protocol::thread_history: built turn from rollout items turn_index=9 turn=Turn { id: "019c4a18-1004-76c0-a0fb-a77610f6a9b8", items: [UserMessage { id: "item-26", content: [Text { text: "hello", text_elements: [] }] }, AgentMessage { id: "item-27", text: "Hello. Ready for the next change in `codex-rs`; I can continue from the current in-progress diff or start a new task." }], status: Completed, error: None }
  2026-02-11T00:32:10.746899Z DEBUG codex_app_server_protocol::protocol::thread_history: built turn from rollout items turn_index=10 turn=Turn { id: "019c4a19-41f0-7db0-ad78-74f1503baeb8", items: [UserMessage { id: "item-28", content: [Text { text: "hello", text_elements: [] }] }, AgentMessage { id: "item-29", text: "Hello. Send the specific change you want in `codex-rs`, and I’ll implement it and run the required checks." }], status: Completed, error: None }
  ```
  
  backward compatibility:
  if you try to resume an old session without task_started and
  task_complete event populated, the following happens:
  - If you resume and do nothing: those reconstructed historical IDs can
  differ next time you resume.
  - If you resume and send a new turn: the new turn gets a fresh UUID from
  live submission flow and is persisted, so that new turn’s ID is stable
  on later resumes.
  I think this behavior is fine, because we only care about deterministic
  turn id once a turn is triggered.

  Celia Chen · 2026-02-11 03:56:01 +00:00
  641d5268fa
• Fix: update parallel tool call exec approval to approve on request id (#11162)

  ### Summary
  
  In parallel tool call, exec command approvals were not approved at
  request level but at a turn level. i.e. when a single request is
  approved, the system currently treats all requests in turn as approved.
  
  ### Before
  
  https://github.com/user-attachments/assets/d50ed129-b3d2-4b2f-97fa-8601eb11f6a8
  
  ### After
  
  https://github.com/user-attachments/assets/36528a43-a4aa-4775-9e12-f13287ef19fc

  Shijie Rao · 2026-02-10 09:38:00 -08:00
  c4b771a16f
• feat: retain NetworkProxy, when appropriate (#11207)

  As of this PR, `SessionServices` retains a
  `Option<StartedNetworkProxy>`, if appropriate.
  
  Now the `network` field on `Config` is `Option<NetworkProxySpec>`
  instead of `Option<NetworkProxy>`.
  
  Over in `Session::new()`, we invoke `NetworkProxySpec::start_proxy()` to
  create the `StartedNetworkProxy`, which is a new struct that retains the
  `NetworkProxy` as well as the `NetworkProxyHandle`. (Note that `Drop` is
  implemented for `NetworkProxyHandle` to ensure the proxies are shutdown
  when it is dropped.)
  
  The `NetworkProxy` from the `StartedNetworkProxy` is threaded through to
  the appropriate places.
  
  
  ---
  [//]: # (BEGIN SAPLING FOOTER)
  Stack created with [Sapling](https://sapling-scm.com). Best reviewed
  with [ReviewStack](https://reviewstack.dev/openai/codex/pull/11207).
  * #11285
  * __->__ #11207

  Michael Bolin · 2026-02-10 02:09:23 -08:00
  44ebf4588f
• test: deflake nextest child-process leak in MCP harnesses (#11263)

  ## Summary
  - add deterministic child-process cleanup to both test `McpProcess`
  helpers
  - keep Tokio `kill_on_drop(true)` but also reap via bounded `try_wait()`
  polling in `Drop`
  - document the failure mode and why this avoids nondeterministic `LEAK`
  flakes
  
  ## Why
  `cargo nextest` leak detection can intermittently report `LEAK` when a
  spawned server outlives test teardown, making CI flaky.
  
  ## Testing
  - `just fmt`
  - `cargo test -p codex-app-server`
  - `cargo test -p codex-mcp-server`
  
  
  ## Failing CI Reference
  - Original failing job:
  https://github.com/openai/codex/actions/runs/21845226299/job/63039443593?pr=11245

  Josh McKinney · 2026-02-10 03:43:24 +00:00
  de59e550c0
• Upgrade rmcp to 0.14 (#10718)

  - [x] Upgrade rmcp to 0.14

  Matthew Zeng · 2026-02-08 15:07:53 -08:00
  9f1009540b
• Fix flaky windows CI test (#10993)

  Hardens PTY Python REPL test and make MCP test startup deterministic
  
  **Summary**
  - `utils/pty/src/tests.rs`
  - Added a REPL readiness handshake (`wait_for_python_repl_ready`) that
  repeatedly sends a marker and waits for it in PTY output before sending
  test commands.
    - Updated `pty_python_repl_emits_output_and_exits` to:
      - wait for readiness first,
      - preserve startup output,
      - append output collected through process exit.
  - Reduces Windows/ConPTY flakiness from early stdin writes racing REPL
  startup.
  
  - `mcp-server/tests/suite/codex_tool.rs`
  - Avoid remote model refresh during MCP test startup, reducing
  timeout-prone nondeterminism.

  Eric Traut · 2026-02-07 08:55:42 -08:00
  10336068db
• Add resume_agent collab tool (#10903)

  Summary
  - add the new resume_agent collab tool path through core, protocol, and
  the app server API, including the resume events
  - update the schema/TypeScript definitions plus docs so resume_agent
  appears in generated artifacts and README
  - note that resumed agents rehydrate rollout history without overwriting
  their base instructions
  
  Testing
  - Not run (not requested)

  jif-oai · 2026-02-07 17:31:45 +01:00
  62605fa471
• feat: add APIs to list and download public remote skills (#10448)

  Add API to list / download from remote public skills

  xl-openai · 2026-02-03 14:09:37 -08:00
  f38d181795
• chore: nuke chat/completions API (#10157)
  jif-oai · 2026-02-03 11:31:57 +00:00
  d2394a2494
• feat: replace custom mcp-types crate with equivalents from rmcp (#10349)

  We started working with MCP in Codex before
  https://crates.io/crates/rmcp was mature, so we had our own crate for
  MCP types that was generated from the MCP schema:
  
  
  https://github.com/openai/codex/blob/8b95d3e082376f4cb23e92641705a22afb28a9da/codex-rs/mcp-types/README.md
  
  Now that `rmcp` is more mature, it makes more sense to use their MCP
  types in Rust, as they handle details (like the `_meta` field) that our
  custom version ignored. Though one advantage that our custom types had
  is that our generated types implemented `JsonSchema` and `ts_rs::TS`,
  whereas the types in `rmcp` do not. As such, part of the work of this PR
  is leveraging the adapters between `rmcp` types and the serializable
  types that are API for us (app server and MCP) introduced in #10356.
  
  Note this PR results in a number of changes to
  `codex-rs/app-server-protocol/schema`, which merit special attention
  during review. We must ensure that these changes are still
  backwards-compatible, which is possible because we have:
  
  ```diff
  - export type CallToolResult = { content: Array<ContentBlock>, isError?: boolean, structuredContent?: JsonValue, };
  + export type CallToolResult = { content: Array<JsonValue>, structuredContent?: JsonValue, isError?: boolean, _meta?: JsonValue, };
  ```
  
  so `ContentBlock` has been replaced with the more general `JsonValue`.
  Note that `ContentBlock` was defined as:
  
  ```typescript
  export type ContentBlock = TextContent | ImageContent | AudioContent | ResourceLink | EmbeddedResource;
  ```
  
  so the deletion of those individual variants should not be a cause of
  great concern.
  
  Similarly, we have the following change in
  `codex-rs/app-server-protocol/schema/typescript/Tool.ts`:
  
  ```
  - export type Tool = { annotations?: ToolAnnotations, description?: string, inputSchema: ToolInputSchema, name: string, outputSchema?: ToolOutputSchema, title?: string, };
  + export type Tool = { name: string, title?: string, description?: string, inputSchema: JsonValue, outputSchema?: JsonValue, annotations?: JsonValue, icons?: Array<JsonValue>, _meta?: JsonValue, };
  ```
  
  so:
  
  - `annotations?: ToolAnnotations` ➡️ `JsonValue`
  - `inputSchema: ToolInputSchema` ➡️ `JsonValue`
  - `outputSchema?: ToolOutputSchema` ➡️ `JsonValue`
  
  and two new fields: `icons?: Array<JsonValue>, _meta?: JsonValue`
  
  ---
  [//]: # (BEGIN SAPLING FOOTER)
  Stack created with [Sapling](https://sapling-scm.com). Best reviewed
  with [ReviewStack](https://reviewstack.dev/openai/codex/pull/10349).
  * #10357
  * __->__ #10349
  * #10356

  Michael Bolin · 2026-02-02 17:41:55 -08:00
  66447d5d2c
• Plan mode: stream proposed plans, emit plan items, and render in TUI (#9786)

  ## Summary
  - Stream proposed plans in Plan Mode using `<proposed_plan>` tags parsed
  in core, emitting plan deltas plus a plan `ThreadItem`, while stripping
  tags from normal assistant output.
  - Persist plan items and rebuild them on resume so proposed plans show
  in thread history.
  - Wire plan items/deltas through app-server protocol v2 and render a
  dedicated proposed-plan view in the TUI, including the “Implement this
  plan?” prompt only when a plan item is present.
  
  ## Changes
  
  ### Core (`codex-rs/core`)
  - Added a generic, line-based tag parser that buffers each line until it
  can disprove a tag prefix; implements auto-close on `finish()` for
  unterminated tags. `codex-rs/core/src/tagged_block_parser.rs`
  - Refactored proposed plan parsing to wrap the generic parser.
  `codex-rs/core/src/proposed_plan_parser.rs`
  - In plan mode, stream assistant deltas as:
    - **Normal text** → `AgentMessageContentDelta`
    - **Plan text** → `PlanDelta` + `TurnItem::Plan` start/completion  
    (`codex-rs/core/src/codex.rs`)
  - Final plan item content is derived from the completed assistant
  message (authoritative), not necessarily the concatenated deltas.
  - Strips `<proposed_plan>` blocks from assistant text in plan mode so
  tags don’t appear in normal messages.
  (`codex-rs/core/src/stream_events_utils.rs`)
  - Persist `ItemCompleted` events only for plan items for rollout replay.
  (`codex-rs/core/src/rollout/policy.rs`)
  - Guard `update_plan` tool in Plan Mode with a clear error message.
  (`codex-rs/core/src/tools/handlers/plan.rs`)
  - Updated Plan Mode prompt to:  
    - keep `<proposed_plan>` out of non-final reasoning/preambles  
    - require exact tag formatting  
    - allow only one `<proposed_plan>` block per turn  
    (`codex-rs/core/templates/collaboration_mode/plan.md`)
  
  ### Protocol / App-server protocol
  - Added `TurnItem::Plan` and `PlanDeltaEvent` to core protocol items.
  (`codex-rs/protocol/src/items.rs`, `codex-rs/protocol/src/protocol.rs`)
  - Added v2 `ThreadItem::Plan` and `PlanDeltaNotification` with
  EXPERIMENTAL markers and note that deltas may not match the final plan
  item. (`codex-rs/app-server-protocol/src/protocol/v2.rs`)
  - Added plan delta route in app-server protocol common mapping.
  (`codex-rs/app-server-protocol/src/protocol/common.rs`)
  - Rebuild plan items from persisted `ItemCompleted` events on resume.
  (`codex-rs/app-server-protocol/src/protocol/thread_history.rs`)
  
  ### App-server
  - Forward plan deltas to v2 clients and map core plan items to v2 plan
  items. (`codex-rs/app-server/src/bespoke_event_handling.rs`,
  `codex-rs/app-server/src/codex_message_processor.rs`)
  - Added v2 plan item tests.
  (`codex-rs/app-server/tests/suite/v2/plan_item.rs`)
  
  ### TUI
  - Added a dedicated proposed plan history cell with special background
  and padding, and moved “• Proposed Plan” outside the highlighted block.
  (`codex-rs/tui/src/history_cell.rs`, `codex-rs/tui/src/style.rs`)
  - Only show “Implement this plan?” when a plan item exists.
  (`codex-rs/tui/src/chatwidget.rs`,
  `codex-rs/tui/src/chatwidget/tests.rs`)
  
  <img width="831" height="847" alt="Screenshot 2026-01-29 at 7 06 24 PM"
  src="https://github.com/user-attachments/assets/69794c8c-f96b-4d36-92ef-c1f5c3a8f286"
  />
  
  ### Docs / Misc
  - Updated protocol docs to mention plan deltas.
  (`codex-rs/docs/protocol_v1.md`)
  - Minor plumbing updates in exec/debug clients to tolerate plan deltas.
  (`codex-rs/debug-client/src/reader.rs`, `codex-rs/exec/...`)
  
  ## Tests
  - Added core integration tests:
    - Plan mode strips plan from agent messages.
    - Missing `</proposed_plan>` closes at end-of-message.  
    (`codex-rs/core/tests/suite/items.rs`)
  - Added unit tests for generic tag parser (prefix buffering, non-tag
  lines, auto-close). (`codex-rs/core/src/tagged_block_parser.rs`)
  - Existing app-server plan item tests in v2.
  (`codex-rs/app-server/tests/suite/v2/plan_item.rs`)
  
  ## Notes / Behavior
  - Plan output no longer appears in standard assistant text in Plan Mode;
  it streams via `PlanDelta` and completes as a `TurnItem::Plan`.
  - The final plan item content is authoritative and may diverge from
  streamed deltas (documented as experimental).
  - Reasoning summaries are not filtered; prompt instructs the model not
  to include `<proposed_plan>` outside the final plan message.
  
  ## Codex Author
  `codex fork 019bec2d-b09d-7450-b292-d7bcdddcdbfb`

  Charley Cunningham · 2026-01-30 18:59:30 +00:00
  ec4a2d07e4
• Conversation naming (#8991)

  Session renaming:
  - `/rename my_session`
  - `/rename` without arg and passing an argument in `customViewPrompt`
  - AppExitInfo shows resume hint using the session name if set instead of
  uuid, defaults to uuid if not set
  - Names are stored in `CODEX_HOME/sessions.jsonl`
  
  Session resuming:
  - codex resume <name> lookup for `CODEX_HOME/sessions.jsonl` first entry
  matching the name and resumes the session
  
  ---------
  
  Co-authored-by: jif-oai <jif@openai.com>

  pap-openai · 2026-01-30 10:40:09 +00:00
  1ef5455eb6
• feat: dynamic tools injection (#9539)

  ## Summary
  Add dynamic tool injection to thread startup in API v2, wire dynamic
  tool calls through the app server to clients, and plumb responses back
  into the model tool pipeline.
  
  ### Flow (high level)
  - Thread start injects `dynamic_tools` into the model tool list for that
  thread (validation is done here).
  - When the model emits a tool call for one of those names, core raises a
  `DynamicToolCallRequest` event.
  - The app server forwards it to the client as `item/tool/call`, waits
  for the client’s response, then submits a `DynamicToolResponse` back to
  core.
  - Core turns that into a `function_call_output` in the next model
  request so the model can continue.
  
  ### What changed
  - Added dynamic tool specs to v2 thread start params and protocol types;
  introduced `item/tool/call` (request/response) for dynamic tool
  execution.
  - Core now registers dynamic tool specs at request time and routes those
  calls via a new dynamic tool handler.
  - App server validates tool names/schemas, forwards dynamic tool call
  requests to clients, and publishes tool outputs back into the session.
  - Integration tests

  jif-oai · 2026-01-26 10:06:44 +00:00
  d594693d1a
• feat: ephemeral threads (#9765)

  Add ephemeral threads capabilities. Only exposed through the
  `app-server` v2
  
  The idea is to disable the rollout recorder for those threads.

  jif-oai · 2026-01-24 14:57:40 +00:00
  83775f4df1
• Persist text elements through TUI input and history (#9393)

  Continuation of breaking up this PR
  https://github.com/openai/codex/pull/9116
  
  ## Summary
  - Thread user text element ranges through TUI/TUI2 input, submission,
  queueing, and history so placeholders survive resume/edit flows.
  - Preserve local image attachments alongside text elements and rehydrate
  placeholders when restoring drafts.
  - Keep model-facing content shapes clean by attaching UI metadata only
  to user input/events (no API content changes).
  
  ## Key Changes
  - TUI/TUI2 composer now captures text element ranges, trims them with
  text edits, and restores them when submission is suppressed.
  - User history cells render styled spans for text elements and keep
  local image paths for future rehydration.
  - Initial chat widget bootstraps accept empty `initial_text_elements` to
  keep initialization uniform.
  - Protocol/core helpers updated to tolerate the new InputText field
  shape without changing payloads sent to the API.

  charley-oai · 2026-01-19 23:49:34 -08:00
  eb90e20c0b
• Feat: request user input tool (#9472)

  ### Summary
  * Add `requestUserInput` tool that the model can use for gather
  feedback/asking question mid turn.
  
  
  ### Tool input schema
  ```
  {
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "requestUserInput input",
    "type": "object",
    "additionalProperties": false,
    "required": ["questions"],
    "properties": {
      "questions": {
        "type": "array",
        "description": "Questions to show the user (1-3). Prefer 1 unless multiple independent decisions block progress.",
        "minItems": 1,
        "maxItems": 3,
        "items": {
          "type": "object",
          "additionalProperties": false,
          "required": ["id", "header", "question"],
          "properties": {
            "id": {
              "type": "string",
              "description": "Stable identifier for mapping answers (snake_case)."
            },
            "header": {
              "type": "string",
              "description": "Short header label shown in the UI (12 or fewer chars)."
            },
            "question": {
              "type": "string",
              "description": "Single-sentence prompt shown to the user."
            },
            "options": {
              "type": "array",
              "description": "Optional 2-3 mutually exclusive choices. Put the recommended option first and suffix its label with \"(Recommended)\". Only include \"Other\" option if we want to include a free form option. If the question is free form in nature, do not include any option.",
              "minItems": 2,
              "maxItems": 3,
              "items": {
                "type": "object",
                "additionalProperties": false,
                "required": ["value", "label", "description"],
                "properties": {
                  "value": {
                    "type": "string",
                    "description": "Machine-readable value (snake_case)."
                  },
                  "label": {
                    "type": "string",
                    "description": "User-facing label (1-5 words)."
                  },
                  "description": {
                    "type": "string",
                    "description": "One short sentence explaining impact/tradeoff if selected."
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  ```
  
  ### Tool output schema
  ```
  {
    "$schema": "http://json-schema.org/draft-07/schema#",
    "title": "requestUserInput output",
    "type": "object",
    "additionalProperties": false,
    "required": ["answers"],
    "properties": {
      "answers": {
        "type": "object",
        "description": "Map of question id to user answer.",
        "additionalProperties": {
          "type": "object",
          "additionalProperties": false,
          "required": ["selected"],
          "properties": {
            "selected": {
              "type": "array",
              "items": { "type": "string" }
            },
            "other": {
              "type": ["string", "null"]
            }
          }
        }
      }
    }
  }
  ```

  Shijie Rao · 2026-01-19 10:17:30 -08:00
  57ec3a8277
• feat: show forked from session id in /status (#9330)

  Summary:
  - Add forked_from to SessionMeta/SessionConfiguredEvent and persist it
  for forked sessions.
  - Surface forked_from in /status for tui + tui2 and add snapshots.

  Anton Panasenko · 2026-01-16 13:41:46 -08:00
  c26fe64539