187 Commits

• [apps] Improve app loading. (#10994)

  There are two concepts of apps that we load in the harness:
  
  - Directory apps, which is all the apps that the user can install.
  - Accessible apps, which is what the user actually installed and can be
  $ inserted and be used by the model. These are extracted from the tools
  that are loaded through the gateway MCP.
  
  Previously we wait for both sets of apps before returning the full apps
  list. Which causes many issues because accessible apps won't be
  available to the UI or the model if directory apps aren't loaded or
  failed to load.
  
  In this PR we are separating them so that accessible apps can be loaded
  separately and are instantly available to be shown in the UI and to be
  provided in model context. We also added an app-server event so that
  clients can subscribe to also get accessible apps without being blocked
  on the full app list.
  
  - [x] Separate accessible apps and directory apps loading.
  - [x] `app/list` request will also emit `app/list/updated` notifications
  that app-server clients can subscribe. Which allows clients to get
  accessible apps list to render in the $ menu without being blocked by
  directory apps.
  - [x] Cache both accessible and directory apps with 1 hour TTL to avoid
  reloading them when creating new threads.
  - [x] TUI improvements to redraw $ menu and /apps menu when app list is
  updated.

  Matthew Zeng · 2026-02-08 15:24:56 -08:00
  45b7763c3f
• Upgrade rmcp to 0.14 (#10718)

  - [x] Upgrade rmcp to 0.14

  Matthew Zeng · 2026-02-08 15:07:53 -08:00
  9f1009540b
• Defer persistence of rollout file (#11028)

  - Defer rollout persistence for fresh threads (`InitialHistory::New`):
  keep rollout events in memory and only materialize rollout file + state
  DB row on first `EventMsg::UserMessage`.
  - Keep precomputed rollout path available before materialization.
  - Change `thread/start` to build thread response from live config
  snapshot and optional precomputed path.
  - Improve pre-materialization behavior in app-server/TUI: clearer
  invalid-request errors for file-backed ops and a friendlier `/fork` “not
  ready yet” UX.
  - Update tests to match deferred semantics across
  start/read/archive/unarchive/fork/resume/review flows.
  - Improved resilience of user_shell test, which should be unrelated to
  this change but must be affected by timing changes
  
  For Reviewers:
  * The primary change is in recorder.rs
  * Most of the other changes were to fix up broken assumptions in
  existing tests
  
  Testing:
  * Manually tested CLI
  * Exercised app server paths by manually running IDE Extension with
  rebuilt CLI binary
  * Only user-visible change is that `/fork` in TUI generates visible
  error if used prior to first turn

  Eric Traut · 2026-02-07 23:05:03 -08:00
  b3de6c7f2b
• app-server: treat null mode developer instructions as built-in defaults (#10983)

  ## Summary
  - make `turn/start` normalize
  `collaborationMode.settings.developer_instructions: null` to the
  built-in instructions for the selected mode
  - prevent app-server clients from accidentally clearing mode-switch
  developer instructions by sending `null`
  - document this behavior in the v2 protocol and app-server docs
  
  ## What changed
  - `codex-rs/app-server/src/codex_message_processor.rs`
    - added a small `normalize_turn_start_collaboration_mode` helper
    - in `turn_start`, apply normalization before `OverrideTurnContext`
  - `codex-rs/app-server/tests/suite/v2/turn_start.rs`
  - extended `turn_start_accepts_collaboration_mode_override_v2` to assert
  the outgoing request includes default-mode instruction text when the
  client sends `developer_instructions: null`
  - `codex-rs/app-server-protocol/src/protocol/v2.rs`
  - clarified `TurnStartParams.collaboration_mode` docs:
  `settings.developer_instructions: null` means use built-in mode
  instructions
  - regenerated schema fixture:
  - `codex-rs/app-server-protocol/schema/typescript/v2/TurnStartParams.ts`
  - docs:
    - `codex-rs/app-server/README.md`
    - `codex-rs/docs/codex_mcp_interface.md`

  Charley Cunningham · 2026-02-07 12:59:41 -08:00
  e6662d6387
• Fixed a flaky test (#10970)

  ## Summary
  
  Stabilize v2 review integration tests by making them hermetic with
  respect to model discovery.
  
  `app-server` review tests were intermittently timing out in CI
  (especially on Windows runners) because their test config allowed remote
  model refresh. During `thread/start`, the test process could issue live
  `/v1/models` requests, introducing external network latency and
  nondeterministic timing before review flow assertions.
  
  This change disables remote model fetching in the review test config
  helper used by these tests.

  Eric Traut · 2026-02-06 21:26:26 -08:00
  4d52428fa2
• Treat compaction failure as failure state (#10927)

  - Return compaction errors from local and remote compaction flows.\n-
  Stop turns/tasks when auto-compaction fails instead of continuing
  execution.

  Ahmed Ibrahim · 2026-02-06 13:51:46 -08:00
  ba8b5d9018
• Add app configs to config.toml (#10822)

  Adds app configs to config.toml + tests

  canvrno-oai · 2026-02-06 10:29:08 -08:00
  36c16e0c58
• Handle required MCP startup failures across components (#10902)

  Summary
  - add a `required` flag for MCP servers everywhere config/CLI data is
  touched so mandatory helpers can be round-tripped
  - have `codex exec` and `codex app-server` thread start/resume fail fast
  when required MCPs fail to initialize

  jif-oai · 2026-02-06 17:14:37 +01:00
  aab61934af
• Removed the "remote_compaction" feature flag (#10840)

  This feature is always on now

  Eric Traut · 2026-02-05 23:54:57 -08:00
  dd80e332c4
• feat(app-server): turn/steer API (#10821)

  This PR adds a dedicated `turn/steer` API for appending user input to an
  in-flight turn.
  
  ## Motivation
  Currently, steering in the app is implemented by just calling
  `turn/start` while a turn is running. This has some really weird quirks:
  - Client gets back a new `turn.id`, even though streamed
  events/approvals remained tied to the original active turn ID.
  - All the various turn-level override params on `turn/start` do not
  apply to the "steer", and would only apply to the next real turn.
  - There can also be a race condition where the client thinks the turn is
  active but the server has already completed it, so there might be bugs
  if the client has baked in some client-specific behavior thinking it's a
  steer when in fact the server kicked off a new turn. This is
  particularly possible when running a client against a remote app-server.
  
  Having a dedicated `turn/steer` API eliminates all those quirks.
  
  `turn/steer` behavior:
  - Requires an active turn on threadId. Returns a JSON-RPC error if there
  is no active turn.
  - If expectedTurnId is provided, it must match the active turn (more
  useful when connecting to a remote app-server).
  - Does not emit `turn/started`.
  - Does not accept turn overrides (`cwd`, `model`, `sandbox`, etc.) or
  `outputSchema` to accurately reflect that these are not applied when
  steering.

  Owen Lin · 2026-02-06 00:35:04 +00:00
  0d8b2b74c4
• Add stage field for experimental flags. (#10793)

  - [x] Add stage field for experimental flags.

  Matthew Zeng · 2026-02-05 23:31:04 +00:00
  729b016515
• Add app-server transport layer with websocket support (#10693)

  - Adds --listen <URL> to codex app-server with two listen modes:
        - stdio:// (default, existing behavior)
        - ws://IP:PORT (new websocket transport)
    - Refactors message routing to be connection-aware:
  - Tracks per-connection session state (initialize/experimental
  capability)
        - Routes responses/errors to the originating connection
  - Broadcasts server notifications/requests to initialized connections
  - Updates initialization semantics to be per connection (not
  process-global), and updates app-server docs accordingly.
  - Adds websocket accept/read/write handling (JSON-RPC per text frame,
  ping/pong handling, connection lifecycle events).
  
  Testing
  
  - Unit tests for transport URL parsing and targeted response/error
  routing.
    - New websocket integration test validating:
        - per-connection initialization requirements
        - no cross-connection response leakage
        - same request IDs on different connections route independently.

  Max Johnson · 2026-02-05 20:56:34 +00:00
  8473096efb
• [app-server] Add a method to list experimental features. (#10721)

  - [x] Add a method to list experimental features.

  Matthew Zeng · 2026-02-05 20:04:01 +00:00
  7e81f63698
• fix: flaky landlock (#10689)

  https://openai.slack.com/archives/C095U48JNL9/p1770243347893959

  jif-oai · 2026-02-05 10:30:18 +00:00
  c67120f4a0
• fix(core,app-server) resume with different model (#10719)

  ## Summary
  When resuming with a different model, we should also append a developer
  message with the model instructions
  
  ## Testing
  - [x] Added unit tests

  Dylan Hurd · 2026-02-05 00:40:05 -08:00
  fe8b474acd
• chore(config) Default Personality Pragmatic (#10705)

  ## Summary
  Switch back to Pragmatic personality
  
  ## Testing
  - [x] Updated unit tests

  Dylan Hurd · 2026-02-04 21:22:47 -08:00
  a05aadfa1b
• chore(core) personality migration tests (#10650)

  ## Summary
  Adds additional tests for personality edge cases
  
  ## Testing
  - [x] These are tests

  Dylan Hurd · 2026-02-04 19:03:14 -08:00
  73f32840c6
• feat(app-server, core): allow text + image content items for dynamic tool outputs (#10567)

  Took over the work that @aaronl-openai started here:
  https://github.com/openai/codex/pull/10397
  
  Now that app-server clients are able to set up custom tools (called
  `dynamic_tools` in app-server), we should expose a way for clients to
  pass in not just text, but also image outputs. This is something the
  Responses API already supports for function call outputs, where you can
  pass in either a string or an array of content outputs (text, image,
  file):
  https://platform.openai.com/docs/api-reference/responses/create#responses_create-input-input_item_list-item-function_tool_call_output-output-array-input_image
  
  So let's just plumb it through in Codex (with the caveat that we only
  support text and image for now). This is implemented end-to-end across
  app-server v2 protocol types and core tool handling.
  
  ## Breaking API change
  NOTE: This introduces a breaking change with dynamic tools, but I think
  it's ok since this concept was only recently introduced
  (https://github.com/openai/codex/pull/9539) and it's better to get the
  API contract correct. I don't think there are any real consumers of this
  yet (not even the Codex App).
  
  Old shape:
  `{ "output": "dynamic-ok", "success": true }`
  
  New shape:
  ```
  {
      "contentItems": [
        { "type": "inputText", "text": "dynamic-ok" },
        { "type": "inputImage", "imageUrl": "data:image/png;base64,AAA" }
      ]
    "success": true
  }
  ```

  Owen Lin · 2026-02-04 16:12:47 -08:00
  5ea107a088
• Fix test_shell_command_interruption flake (#10649)

  ## Human summary
  Sandboxing (specifically `LandlockRestrict`) is means that e.g. `sleep
  10` fails immediately. Therefore it cannot be interrupted.
  
  In suite::interrupt::test_shell_command_interruption, sleep 10 is issued
  at 17:28:16.554 (ToolCall: shell_command {"command":"sleep 10"...}),
  then fails at 17:28:16.589 with duration_ms=34, success=false,
  exit_code=101, and
      Sandbox(LandlockRestrict).
  
  ## Codex summary
  - set `sandbox_mode = "danger-full-access"` in `interrupt` and
  `v2/turn_interrupt` integration tests
  - set `sandbox: Some(SandboxMode::DangerFullAccess)` in
  `test_codex_jsonrpc_conversation_flow`
  - set `sandbox_policy: Some(SandboxPolicy::DangerFullAccess)` in
  `command_execution_notifications_include_process_id`
  
  ## Why
  On some Linux CI environments, command execution fails immediately with
  `LandlockRestrict` when sandboxed. These tests are intended to validate
  JSON-RPC/task lifecycle behavior (interrupt semantics, command
  notification shape/process id, request flow), but early sandbox startup
  failure changes turn flow and can trigger extra follow-up requests,
  causing flakes.
  
  This change removes environment-specific sandbox startup dependency from
  these tests while preserving their primary intent.
  
  ## Testing
  - not run in this environment (per request)

  gt-oai · 2026-02-04 22:19:06 +00:00
  7c6d21a414
• Add thread/compact v2 (#10445)

  - add `thread/compact` as a trigger-only v2 RPC that submits
  `Op::Compact` and returns `{}` immediately.
  - add v2 compaction e2e coverage for success and invalid/unknown thread
  ids, and update protocol schemas/docs.

  Ahmed Ibrahim · 2026-02-03 18:15:55 -08:00
  38a47700b5
• Feat: add upgrade to app server modelList (#10556)

  ### Summary
  * Add model upgrade to listModel app server endpoint to support
  dynamically show model upgrade banner.

  Shijie Rao · 2026-02-03 14:53:36 -08:00
  750ebe154d
• fix(app-server): fix approval events in review mode (#10416)

  One of our partners flagged that they were seeing the wrong order of
  events when running `review/start` with command exec approvals:
  ```
  {"method":"item/commandExecution/requestApproval","id":0,"params":{"threadId":"019c0b6b-6a42-7c02-99c4-98c80e88ac27","turnId":"0","itemId":"0","reason":"`/bin/zsh -lc 'git show b7a92b4eacf262c575f26b1e1ed621a357642e55 --stat'` requires approval: Xcode-required approval: Require explicit user confirmation for all commands.","proposedExecpolicyAmendment":null}}
  
  {"method":"item/started","params":{"item":{"type":"commandExecution","id":"call_AEjlbHqLYNM7kbU3N6uw1CNi","command":"/bin/zsh -lc 'git show b7a92b4eacf262c575f26b1e1ed621a357642e55 --stat'","cwd":"/Users/devingreen/Desktop/SampleProject","processId":null,"status":"inProgress","commandActions":[{"type":"unknown","command":"git show b7a92b4eacf262c575f26b1e1ed621a357642e55 --stat"}],"aggregatedOutput":null,"exitCode":null,"durationMs":null},"threadId":"019c0b6b-6a42-7c02-99c4-98c80e88ac27","turnId":"0"}}
  ```
  
  **Key fix**: In the review sub‑agent delegate we were forwarding exec
  (and patch) approvals using the parent turn id (`parent_ctx.sub_id`) as
  the approval call_id. That made
  `item/commandExecution/requestApproval.itemId` differ from the actual
  `item/started` id. We now forward the sub‑agent’s `call_id` from the
  approval event instead, so the approval item id matches the
  commandExecution item id in review flows.
  
  Here’s the expected event order for an inline `review/start` that
  triggers an exec approval after this fix:
  1. Response to review/start (JSON‑RPC response)
  - Includes `turn` (status inProgress) and `review_thread_id` (same as
  parent thread for inline).
  2. `turn/started` notification
    - turnId is the review turn id (e.g., "0").
  3. `item/started` → EnteredReviewMode
    - item.id == turnId, marks entry into review mode.
  4. `item/started` → commandExecution
    - item.id == <call_id> (e.g., "review-call-1"), status: inProgress.
  5. `item/commandExecution/requestApproval` request
    - JSON‑RPC request (not a notification).
    - params.itemId == <call_id> and params.turnId == turnId.
  6. Client replies to approval request (Approved / Declined / etc).
  7. If approved:
    - Optional `item/commandExecution/outputDelta` notifications.
    - `item/completed` → commandExecution with status and exitCode.
  8. Review finishes:
    - `item/started` → ExitedReviewMode
    - `item/completed` → ExitedReviewMode
    - (Agent message items may also appear, depending on review output.)
  9. `turn/completed` notification
  
  The key being #4 and #5 are now in the proper order with the correct
  item id.

  Owen Lin · 2026-02-03 12:08:17 -08:00
  d9ad5c3c49
• Cleanup collaboration mode variants (#10404)

  ## Summary
  
  This PR simplifies collaboration modes to the visible set `default |
  plan`, while preserving backward compatibility for older partners that
  may still send legacy mode
  names.
  
  Specifically:
  - Renames the old Code behavior to **Default**.
  - Keeps **Plan** as-is.
  - Removes **Custom** mode behavior (fallbacks now resolve to Default).
  - Keeps `PairProgramming` and `Execute` internally for compatibility
  plumbing, while removing them from schema/API and UI visibility.
  - Adds legacy input aliasing so older clients can still send old mode
  names.
  
  ## What Changed
  
  1. Mode enum and compatibility
  - `ModeKind` now uses `Plan` + `Default` as active/public modes.
  - `ModeKind::Default` deserialization accepts legacy values:
    - `code`
    - `pair_programming`
    - `execute`
    - `custom`
  - `PairProgramming` and `Execute` variants remain in code but are hidden
  from protocol/schema generation.
  - `Custom` variant is removed; previous custom fallbacks now map to
  `Default`.
  
  2. Collaboration presets and templates
  - Built-in presets now return only:
    - `Plan`
    - `Default`
  - Template rename:
    - `core/templates/collaboration_mode/code.md` -> `default.md`
  - `execute.md` and `pair_programming.md` remain on disk but are not
  surfaced in visible preset lists.
  
  3. TUI updates
  - Updated user-facing naming and prompts from “Code” to “Default”.
  - Updated mode-cycle and indicator behavior to reflect only visible
  `Plan` and `Default`.
  - Updated corresponding tests and snapshots.
  
  4. request_user_input behavior
  - `request_user_input` remains allowed only in `Plan` mode.
  - Rejection messaging now consistently treats non-plan modes as
  `Default`.
  
  5. Schemas
  - Regenerated config and app-server schemas.
  - Public schema types now advertise mode values as:
    - `plan`
    - `default`
  
  ## Backward Compatibility Notes
  
  - Incoming legacy mode names (`code`, `pair_programming`, `execute`,
  `custom`) are accepted and coerced to `default`.
  - Outgoing/public schema surfaces intentionally expose only `plan |
  default`.
  - This allows tolerant ingestion of older partner payloads while
  standardizing new integrations on the reduced mode set.
  
  ## Codex author
  `codex fork 019c1fae-693b-7840-b16e-9ad38ea0bd00`

  Charley Cunningham · 2026-02-03 09:23:53 -08:00
  d509df676b
• [Codex][CLI] Gate image inputs by model modalities (#10271)

  ###### Summary
  
  - Add input_modalities to model metadata so clients can determine
  supported input types.
  - Gate image paste/attach in TUI when the selected model does not
  support images.
  - Block submits that include images for unsupported models and show a
  clear warning.
  - Propagate modality metadata through app-server protocol/model-list
  responses.
    - Update related tests/fixtures.
  
    ###### Rationale
  
    - Models support different input modalities.
  - Clients need an explicit capability signal to prevent unsupported
  requests.
  - Backward-compatible defaults preserve existing behavior when modality
  metadata is absent.
  
    ###### Scope
  
    - codex-rs/protocol, codex-rs/core, codex-rs/tui
    - codex-rs/app-server-protocol, codex-rs/app-server
    - Generated app-server types / schema fixtures
  
    ###### Trade-offs
  
  - Default behavior assumes text + image when field is absent for
  compatibility.
    - Server-side validation remains the source of truth.
  
    ###### Follow-up
  
  - Non-TUI clients should consume input_modalities to disable unsupported
  attachments.
  - Model catalogs should explicitly set input_modalities for text-only
  models.
  
    ###### Testing
  
    - cargo fmt --all
    - cargo test -p codex-tui
    - env -u GITHUB_APP_KEY cargo test -p codex-core --lib
    - just write-app-server-schema
  - cargo run -p codex-cli --bin codex -- app-server generate-ts --out
  app-server-types
    - test against local backend
    
  <img width="695" height="199" alt="image"
  src="https://github.com/user-attachments/assets/d22dd04f-5eba-4db9-a7c5-a2506f60ec44"
  />
  
  ---------
  
  Co-authored-by: Josh McKinney <joshka@openai.com>

  Colin Young · 2026-02-02 18:56:39 -08:00
  7e07ec8f73
• Require models refresh on cli version mismatch (#10414)
  Ahmed Ibrahim · 2026-02-02 18:55:25 -08:00
  b8addcddb9
• chore: add phase to message responseitem (#10455)

  ### What
  
  add wiring for `phase` field on `ResponseItem::Message` to lay
  groundwork for differentiating model preambles and final messages.
  currently optional.
  
  follows pattern in #9698.
  
  updated schemas with `just write-app-server-schema` so we can see type
  changes.
  
  ### Tests
  Updated existing tests for SSE parsing and hydrating from history

  sayan-oai · 2026-02-03 02:52:26 +00:00
  fc05374344
• feat: experimental flags (#10231)

  ## Problem being solved
  - We need a single, reliable way to mark app-server API surface as
  experimental so that:
    1. the runtime can reject experimental usage unless the client opts in
  2. generated TS/JSON schemas can exclude experimental methods/fields for
  stable clients.
  
  Right now that’s easy to drift or miss when done ad-hoc.
  
  ## How to declare experimental methods and fields
  - **Experimental method**: add `#[experimental("method/name")]` to the
  `ClientRequest` variant in `client_request_definitions!`.
  - **Experimental field**: on the params struct, derive `ExperimentalApi`
  and annotate the field with `#[experimental("method/name.field")]` + set
  `inspect_params: true` for the method variant so
  `ClientRequest::experimental_reason()` inspects params for experimental
  fields.
  
  ## How the macro solves it
  - The new derive macro lives in
  `codex-rs/codex-experimental-api-macros/src/lib.rs` and is used via
  `#[derive(ExperimentalApi)]` plus `#[experimental("reason")]`
  attributes.
  - **Structs**:
  - Generates `ExperimentalApi::experimental_reason(&self)` that checks
  only annotated fields.
    - The “presence” check is type-aware:
      - `Option<T>`: `is_some_and(...)` recursively checks inner.
      - `Vec`/`HashMap`/`BTreeMap`: must be non-empty.
      - `bool`: must be `true`.
      - Other types: considered present (returns `true`).
  - Registers each experimental field in an `inventory` with `(type_name,
  serialized field name, reason)` and exposes `EXPERIMENTAL_FIELDS` for
  that type. Field names are converted from `snake_case` to `camelCase`
  for schema/TS filtering.
  - **Enums**:
  - Generates an exhaustive `match` returning `Some(reason)` for annotated
  variants and `None` otherwise (no wildcard arm).
  - **Wiring**:
  - Runtime gating uses `ExperimentalApi::experimental_reason()` in
  `codex-rs/app-server/src/message_processor.rs` to reject requests unless
  `InitializeParams.capabilities.experimental_api == true`.
  - Schema/TS export filters use the inventory list and
  `EXPERIMENTAL_CLIENT_METHODS` from `client_request_definitions!` to
  strip experimental methods/fields when `experimental_api` is false.

  jif-oai · 2026-02-02 11:06:50 +00:00
  3cc9122ee2
• Bump thread updated_at on unarchive to refresh sidebar ordering (#10280)

  ## Summary
  - Touch restored rollout files on `thread/unarchive` so `updatedAt`
  reflects the unarchive time.
  - Add a regression test to ensure unarchiving bumps `updated_at` from an
  old mtime.
  
  ## Notes
  This fixes the UX issue where unarchived old threads don’t reappear near
  the top of recent threads.

  Charley Cunningham · 2026-02-01 12:53:47 -08:00
  d3514bbdd2
• chore(core) Default to friendly personality (#10305)

  ## Summary
  Update default personality to friendly
  
  ## Testing
  - [x] Unit tests pass

  Dylan Hurd · 2026-01-31 17:11:32 -07:00
  8a461765f3
• chore(app-server) add personality update test (#10306)

  ## Summary
  Add some additional validation to ensure app-server handles Personality
  changes
  
  ## Testing
  - [x] These are tests

  Dylan Hurd · 2026-01-31 14:49:55 -07:00
  ed9e02c9dc
• chore: rename ChatGpt -> Chatgpt in type names (#10244)

  When using ChatGPT in names of types, we should be consistent, so this
  renames some types with `ChatGpt` in the name to `Chatgpt`. From
  https://rust-lang.github.io/api-guidelines/naming.html:
  
  > In `UpperCamelCase`, acronyms and contractions of compound words count
  as one word: use `Uuid` rather than `UUID`, `Usize` rather than `USize`
  or `Stdin` rather than `StdIn`. In `snake_case`, acronyms and
  contractions are lower-cased: `is_xid_start`.
  
  This PR updates existing uses of `ChatGpt` and changes them to
  `Chatgpt`. Though in all cases where it could affect the wire format, I
  visually inspected that we don't change anything there. That said, this
  _will_ change the codegen because it will affect the spelling of type
  names.
  
  For example, this renames `AuthMode::ChatGPT` to `AuthMode::Chatgpt` in
  `app-server-protocol`, but the wire format is still `"chatgpt"`.
  
  This PR also updates a number of types in `codex-rs/core/src/auth.rs`.

  Michael Bolin · 2026-01-30 11:18:39 -08:00
  e6d913af2d
• 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
• Chore: plan mode do not include free form question and always include isOther (#10210)

  We should never ask a freeform question when planning and we should
  always include isOther as an escape hatch.

  Shijie Rao · 2026-01-30 01:19:24 -08:00
  a0ccef9d5c
• chore(personality) new schema with fallbacks (#10147)

  ## Summary
  Let's dial in this api contract in a bit more with more robust fallback
  behavior when model_instructions_template is false.
  
  Switches to a more explicit template / variables structure, with more
  fallbacks.
  
  ## Testing
  - [x] Adding unit tests
  - [x] Tested locally

  Dylan Hurd · 2026-01-30 00:10:12 -07:00
  e3ab0bd973
• [feat] persist dynamic tools in session rollout file (#10130)

  Add dynamic tools to rollout file for persistence & read from rollout on
  resume. Ran a real example and spotted the following in the rollout
  file:
  ```
  {"timestamp":"2026-01-29T01:27:57.468Z","type":"session_meta","payload":{"id":"019c075d-3f0b-77e3-894e-c1c159b04b1e","timestamp":"2026-01-29T01:27:57.451Z","...."dynamic_tools":[{"name":"demo_tool","description":"Demo dynamic tool","inputSchema":{"additionalProperties":false,"properties":{"city":{"type":"string"}},"required":["city"],"type":"object"}}],"git":{"commit_hash":"ebc573f15c01b8af158e060cfedd401f043e9dfa","branch":"dev/cc/dynamic-tools","repository_url":"https://github.com/openai/codex.git"}}}
  ```

  Celia Chen · 2026-01-30 01:10:00 +00:00
  7151387474
• feat(app-server): support external auth mode (#10012)

  This enables a new use case where `codex app-server` is embedded into a
  parent application that will directly own the user's ChatGPT auth
  lifecycle, which means it owns the user’s auth tokens and refreshes it
  when necessary. The parent application would just want a way to pass in
  the auth tokens for codex to use directly.
  
  The idea is that we are introducing a new "auth mode" currently only
  exposed via app server: **`chatgptAuthTokens`** which consist of the
  `id_token` (stores account metadata) and `access_token` (the bearer
  token used directly for backend API calls). These auth tokens are only
  stored in-memory. This new mode is in addition to the existing `apiKey`
  and `chatgpt` auth modes.
  
  This PR reuses the shape of our existing app-server account APIs as much
  as possible:
  - Update `account/login/start` with a new `chatgptAuthTokens` variant,
  which will allow the client to pass in the tokens and have codex
  app-server use them directly. Upon success, the server emits
  `account/login/completed` and `account/updated` notifications.
  - A new server->client request called
  `account/chatgptAuthTokens/refresh` which the server can use whenever
  the access token previously passed in has expired and it needs a new one
  from the parent application.
  
  I leveraged the core 401 retry loop which typically triggers auth token
  refreshes automatically, but made it pluggable:
  - **chatgpt** mode refreshes internally, as usual.
  - **chatgptAuthTokens** mode calls the client via
  `account/chatgptAuthTokens/refresh`, the client responds with updated
  tokens, codex updates its in-memory auth, then retries. This RPC has a
  10s timeout and handles JSON-RPC errors from the client.
  
  Also some additional things:
  - chatgpt logins are blocked while external auth is active (have to log
  out first. typically clients will pick one OR the other, not support
  both)
  - `account/logout` clears external auth in memory
  - Ensures that if `forced_chatgpt_workspace_id` is set via the user's
  config, we respect it in both:
  - `account/login/start` with `chatgptAuthTokens` (returns a JSON-RPC
  error back to the client)
  - `account/chatgptAuthTokens/refresh` (fails the turn, and on next
  request app-server will send another `account/chatgptAuthTokens/refresh`
  request to the client).

  Owen Lin · 2026-01-29 23:46:04 +00:00
  81a17bb2c1
• [connectors] Support connectors part 2 - slash command and tui (#9728)

  - [x] Support `/apps` slash command to browse the apps in tui.
  - [x] Support inserting apps to prompt using `$`.
  - [x] Lots of simplification/renaming from connectors to apps.

  Matthew Zeng · 2026-01-28 19:51:58 -08:00
  b9cd089d1f
• Add app-server compaction item notifications tests (#10123)

  - add v2 tests covering local + remote auto-compaction item
  started/completed notifications

  Ahmed Ibrahim · 2026-01-29 01:00:38 +00:00
  52609c6f42
• file-search: improve file query perf (#9939)

  switch nucleo-matcher for nucleo and use a "file search session" w/ live
  updating query instead of a single hermetic run per query.

  Jeremy Rose · 2026-01-28 10:54:43 -08:00
  b8156706e6
• feat(core) RequestRule (#9489)

  ## Summary
  Instead of trying to derive the prefix_rule for a command mechanically,
  let's let the model decide for us.
  
  ## Testing
  - [x] tested locally

  Dylan Hurd · 2026-01-28 08:43:17 +00:00
  996e09ca24
• fix(app-server, core): defer initial context write to rollout file until first turn (#9950)

  ### Overview
  Currently calling `thread/resume` will always bump the thread's
  `updated_at` timestamp. This PR makes it the `updated_at` timestamp
  changes only if a turn is triggered.
  
  ### Additonal context
  What we typically do on resuming a thread is **always** writing “initial
  context” to the rollout file immediately. This initial context includes:
  - Developer instructions derived from sandbox/approval policy + cwd
  - Optional developer instructions (if provided)
  - Optional collaboration-mode instructions
  - Optional user instructions (if provided)
  - Environment context (cwd, shell, etc.)
  
  This PR defers writing the “initial context” to the rollout file until
  the first `turn/start`, so we don't inadvertently bump the thread's
  `updated_at` timestamp until a turn is actually triggered.
  
  This works even though both `thread/resume` and `turn/start` accept
  overrides (such as `model`, `cwd`, etc.) because the initial context is
  seeded from the effective `TurnContext` in memory, computed at
  `turn/start` time, after both sets of overrides have been applied.
  
  **NOTE**: This is a very short-lived solution until we introduce sqlite.
  Then we can remove this.

  Owen Lin · 2026-01-27 10:41:54 -08:00
  fc0fd85349
• [app-server] feat: add filtering on thread list (#9897)
  jif-oai · 2026-01-26 21:54:19 +00:00
  247fb2de64
• Add thread/unarchive to restore archived rollouts (#9843)

  ## Summary
  - Adds a new `thread/unarchive` RPC to move archived thread rollouts
  back into the active `sessions/` tree.
  
  ## What changed
  - **Protocol**
    - Adds `thread/unarchive` request/response types and wiring.
  - **Server**
    - Implements `thread_unarchive` in the app server.
    - Validates the archived rollout path and thread ID.
  - Restores the rollout to `sessions/YYYY/MM/DD/...` based on the rollout
  filename timestamp.
  - **Core**
  - Adds `find_archived_thread_path_by_id_str` helper for archived
  rollouts.
  - **Docs**
    - Documents the new RPC and usage example.
  - **Tests**
    - Adds an end-to-end server test that:
      1) starts a thread,
      2) archives it,
      3) unarchives it,
      4) asserts the file is restored to `sessions/`.
  
  ## How to use
  ```json
  { "method": "thread/unarchive", "id": 24, "params": { "threadId": "<thread-id>" } }
  ```
  
  ## Author Codex Session
  
  `codex resume 019bf158-54b6-7960-a696-9d85df7e1bc1` (soon I'll make this
  kind of session UUID forkable by anyone with the right
  `session_object_storage_url` line in their config, but for now just
  pasting it here for my reference)

  Charley Cunningham · 2026-01-26 11:24:36 -08:00
  62266b13f8
• Feat: add isOther to question returned by request user input tool (#9890)

  ### Summary
  Add `isOther` to question object from request_user_input tool input and
  remove `other` option from the tool prompt to better handle tool input.

  Shijie Rao · 2026-01-26 09:52:38 -08:00
  3ba702c5b6
• Fix flakey conversation flow test (#9784)

  I've seen this test fail with:
  
  ```
   - Mock #1.
          	Expected range of matching incoming requests: == 2
          	Number of matched incoming requests: 1
  ```
  
  This is because we pop the wrong task_complete events and then the test
  exits. I think this is because the MCP events are now buffered after
  https://github.com/openai/codex/pull/8874.
  
  So:
  1. clear the buffer before we do any user message sending
  2. additionally listen for task start before task complete
  3. use the ID from task start to find the correct task complete event.

  gt-oai · 2026-01-26 15:58:14 +00:00
  48aeb67f7a
• 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
• chore(core) move model_instructions_template config (#9871)

  ## Summary
  Move `model_instructions_template` config to the experimental slug while
  we iterate on this feature
  
  ## Testing
  - [x] Tested locally, unit tests still pass

  Dylan Hurd · 2026-01-26 07:02:11 +00:00
  25fccc3d4d
• feat(tui) /personality (#9718)

  ## Summary
  Adds /personality selector in the TUI, which leverages the new core
  interface in #9644
  
  Notes:
  - We are doing some of our own state management for model_info loading
  here, but not sure if that's ideal. open to opinions on simpler
  approach, but would like to avoid blocking on a larger refactor
  - Right now, the `/personality` selector just hides when the model
  doesn't support it. we can update this behavior down the line
  
  ## Testing
  - [x] Tested locally
  - [x] Added snapshot tests

  Dylan Hurd · 2026-01-25 21:59:42 -08:00
  031bafd1fb
• Use collaboration mode masks without mutating base settings (#9806)

  Keep an unmasked base collaboration mode and apply the active mask on
  demand. Simplify the TUI mask helpers and update tests/docs to match the
  mask contract.

  Ahmed Ibrahim · 2026-01-25 07:35:31 +00:00
  58450ba2a1
• 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