Commit Graph

68 Commits

  • feat: support product-scoped plugins. (#15041)
    1. Added SessionSource::Custom(String) and --session-source.
      2. Enforced plugin and skill products by session_source.
      3. Applied the same filtering to curated background refresh.
  • Add thread/shellCommand to app server API surface (#14988)
    This PR adds a new `thread/shellCommand` app server API so clients can
    implement `!` shell commands. These commands are executed within the
    sandbox, and the command text and output are visible to the model.
    
    The internal implementation mirrors the current TUI `!` behavior.
    - persist shell command execution as `CommandExecution` thread items,
    including source and formatted output metadata
    - bridge live and replayed app-server command execution events back into
    the existing `tui_app_server` exec rendering path
    
    This PR also wires `tui_app_server` to submit `!` commands through the
    new API.
  • Revert "fix: harden plugin feature gating" (#15102)
    Reverts openai/codex#15020
    
    I messed up the commit in my PR and accidentally merged changes that
    were still under review.
  • fix: harden plugin feature gating (#15020)
    1. Use requirement-resolved config.features as the plugin gate.
    2. Guard plugin/list, plugin/read, and related flows behind that gate.
    3. Skip bad marketplace.json files instead of failing the whole list.
    4. Simplify plugin state and caching.
  • Fix fuzzy search notification buffering in app-server tests (#14955)
    ## What is flaky
    `codex-rs/app-server/tests/suite/fuzzy_file_search.rs` intermittently
    loses the expected `fuzzyFileSearch/sessionUpdated` and
    `fuzzyFileSearch/sessionCompleted` notifications when multiple
    fuzzy-search sessions are active and CI delivers notifications out of
    order.
    
    ## Why it was flaky
    The wait helpers were keyed only by JSON-RPC method name.
    
    - `wait_for_session_updated` consumed the next
    `fuzzyFileSearch/sessionUpdated` notification even when it belonged to a
    different search session.
    - `wait_for_session_completed` did the same for
    `fuzzyFileSearch/sessionCompleted`.
    - Once an unmatched notification was read, it was dropped permanently
    instead of buffered.
    - That meant a valid completion for the target search could arrive
    slightly early, be consumed by the wrong waiter, and disappear before
    the test started waiting for it.
    
    The result depended on notification ordering and runner scheduling
    instead of on the actual product behavior.
    
    ## How this PR fixes it
    - Add a buffered notification reader in
    `codex-rs/app-server/tests/common/mcp_process.rs`.
    - Match fuzzy-search notifications on the identifying payload fields
    instead of matching only on method name.
    - Preserve unmatched notifications in the in-process queue so later
    waiters can still consume them.
    - Include pending notification methods in timeout failures to make
    future diagnosis concrete.
    
    ## Why this fix fixes the flakiness
    The test now behaves like a real consumer of an out-of-order event
    stream: notifications for other sessions stay buffered until the correct
    waiter asks for them. Reordering no longer loses the target event, so
    the test result is determined by whether the server emitted the right
    notifications, not by which one happened to be read first.
    
    Co-authored-by: Ahmed Ibrahim <219906144+aibrahim-oai@users.noreply.github.com>
    Co-authored-by: Codex <noreply@openai.com>
  • 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
  • app-server: add v2 filesystem APIs (#14245)
    Add a protocol-level filesystem surface to the v2 app-server so Codex
    clients can read and write files, inspect directories, and subscribe to
    path changes without relying on host-specific helpers.
    
    High-level changes:
    - define the new v2 fs/readFile, fs/writeFile, fs/createDirectory,
    fs/getMetadata, fs/readDirectory, fs/remove, fs/copy RPCs
    - implement the app-server handlers, including absolute-path validation,
    base64 file payloads, recursive copy/remove semantics
    - document the API, regenerate protocol schemas/types, and add
    end-to-end tests for filesystem operations, copy edge cases
    
    Testing plan:
    - validate protocol serialization and generated schema output for the
    new fs request, response, and notification types
    - run app-server integration coverage for file and directory CRUD paths,
    metadata/readDirectory responses, copy failure modes, and absolute-path
    validation
  • feat: add plugin/read. (#14445)
    return more information for a specific plugin.
  • chore(app-server): stop emitting codex/event/ notifications (#14392)
    ## Description
    
    This PR stops emitting legacy `codex/event/*` notifications from the
    public app-server transports.
    
    It's been a long time coming! app-server was still producing a raw
    notification stream from core, alongside the typed app-server
    notifications and server requests, for compatibility reasons. Now,
    external clients should no longer be depending on those legacy
    notifications, so this change removes them from the stdio and websocket
    contract and updates the surrounding docs, examples, and tests to match.
    
    ### Caveat
    I left the "in-process" version of app-server alone for now, since
    `codex exec` was recently based on top of app-server via this in-process
    form here: https://github.com/openai/codex/pull/14005
    
    Seems like `codex exec` still consumes some legacy notifications
    internally, so this branch only removes `codex/event/*` from app-server
    over stdio and websockets.
    
    ## Follow-up
    
    Once `codex exec` is fully migrated off `codex/event/*` notifications,
    we'll be able to stop emitting them entirely entirely instead of just
    filtering it at the external transport boundary.
  • chore: plugin/uninstall endpoint (#14111)
    add `plugin/uninstall` app-server endpoint to fully rm plugin from
    plugins cache dir and rm entry from user config file.
    
    plugin-enablement is session-scoped, so uninstalls are only picked up in
    new sessions (like installs).
    
    added tests.
  • app-server: Add streaming and tty/pty capabilities to command/exec (#13640)
    * Add an ability to stream stdin, stdout, and stderr
    * Streaming of stdout and stderr has a configurable cap for total amount
    of transmitted bytes (with an ability to disable it)
    * Add support for overriding environment variables
    * Add an ability to terminate running applications (using
    `command/exec/terminate`)
    * Add TTY/PTY support, with an ability to resize the terminal (using
    `command/exec/resize`)
  • check app auth in plugin/install (#13685)
    #### What
    on `plugin/install`, check if installed apps are already authed on
    chatgpt, and return list of all apps that are not. clients can use this
    list to trigger auth workflows as needed.
    
    checks are best effort based on `codex_apps` loading, much like
    `app/list`.
    
    #### Tests
    Added integration tests, tested locally.
  • support plugin/list. (#13540)
    Introduce a plugin/list which reads from local marketplace.json.
    Also update the signature for plugin/install.
  • Add thread metadata update endpoint to app server (#13280)
    ## Summary
    - add the v2 `thread/metadata/update` API, including
    protocol/schema/TypeScript exports and app-server docs
    - patch stored thread `gitInfo` in sqlite without resuming the thread,
    with validation plus support for explicit `null` clears
    - repair missing sqlite thread rows from rollout data before patching,
    and make those repairs safe by inserting only when absent and updating
    only git columns so newer metadata is not clobbered
    - keep sqlite authoritative for mutable thread git metadata by
    preserving existing sqlite git fields during reconcile/backfill and only
    using rollout `SessionMeta` git fields to fill gaps
    - add regression coverage for the endpoint, repair paths, concurrent
    sqlite writes, clearing git fields, and rollout/backfill reconciliation
    - fix the login server shutdown race so cancelling before the waiter
    starts still terminates `block_until_done()` correctly
    
    ## Testing
    - `cargo test -p codex-state
    apply_rollout_items_preserves_existing_git_branch_and_fills_missing_git_fields`
    - `cargo test -p codex-state
    update_thread_git_info_preserves_newer_non_git_metadata`
    - `cargo test -p codex-core
    backfill_sessions_preserves_existing_git_branch_and_fills_missing_git_fields`
    - `cargo test -p codex-app-server thread_metadata_update`
    - `cargo test`
    - currently fails in existing `codex-core` grep-files tests with
    `unsupported call: grep_files`:
        - `suite::grep_files::grep_files_tool_collects_matches`
        - `suite::grep_files::grep_files_tool_reports_empty_results`
  • chore(app-server): delete v1 RPC methods and notifications (#13375)
    ## Summary
    This removes the old app-server v1 methods and notifications we no
    longer need, while keeping the small set the main codex app client still
    depends on for now.
    
    The remaining legacy surface is:
    - `initialize`
    - `getConversationSummary`
    - `getAuthStatus`
    - `gitDiffToRemote`
    - `fuzzyFileSearch`
    - `fuzzyFileSearch/sessionStart`
    - `fuzzyFileSearch/sessionUpdate`
    - `fuzzyFileSearch/sessionStop`
    
    And the raw `codex/event/*` notifications emitted from core. These
    notifications will be removed in a followup PR.
    
    ## What changed
    - removed deprecated v1 request variants from the protocol and
    app-server dispatcher
    - removed deprecated typed notifications: `authStatusChange`,
    `loginChatGptComplete`, and `sessionConfigured`
    - updated the app-server test client to use v2 flows instead of deleted
    v1 flows
    - deleted legacy-only app-server test suites and added focused coverage
    for `getConversationSummary`
    - regenerated app-server schema fixtures and updated the MCP interface
    docs to match the remaining compatibility surface
    
    ## Testing
    - `just write-app-server-schema`
    - `cargo test -p codex-app-server-protocol`
    - `cargo test -p codex-app-server`
  • feat(app-server): add tracing to all app-server APIs (#13285)
    ### Overview
    This PR adds the first piece of tracing for app-server JSON-RPC
    requests.
    
    There are two main changes:
    - JSON-RPC requests can now take an optional W3C trace context at the
    top level via a `trace` field (`traceparent` / `tracestate`).
    - app-server now creates a dedicated request span for every inbound
    JSON-RPC request in `MessageProcessor`, and uses the request-level trace
    context as the parent when present.
    
    For compatibility with existing flows, app-server still falls back to
    the TRACEPARENT env var when there is no request-level traceparent.
    
    This PR is intentionally scoped to the app-server boundary. In a
    followup, we'll actually propagate trace context through the async
    handoff into core execution spans like run_turn, which will make
    app-server traces much more useful.
    
    ### Spans
    A few details on the app-server span shape:
    - each inbound request gets its own server span
    - span/resource names are based on the JSON-RPC method (`initialize`,
    `thread/start`, `turn/start`, etc.)
    - spans record transport (stdio vs websocket), request id, connection
    id, and client name/version when available
    - `initialize` stores client metadata in session state so later requests
    on the same connection can reuse it
  • feat(app-server): thread/unsubscribe API (#10954)
    Adds a new v2 app-server API for a client to be able to unsubscribe to a
    thread:
    - New RPC method: `thread/unsubscribe`
    - New server notification: `thread/closed`
    
    Today clients can start/resume/archive threads, but there wasn’t a way
    to explicitly unload a live thread from memory without archiving it.
    With `thread/unsubscribe`, a client can indicate it is no longer
    actively working with a live Thread. If this is the only client
    subscribed to that given thread, the thread will be automatically closed
    by app-server, at which point the server will send `thread/closed` and
    `thread/status/changed` with `status: notLoaded` notifications.
    
    This gives clients a way to prevent long-running app-server processes
    from accumulating too many thread (and related) objects in memory.
    
    Closed threads will also be removed from `thread/loaded/list`.
  • Add app-server v2 thread realtime API (#12715)
    Add experimental `thread/realtime/*` v2 requests and notifications, then
    route app-server realtime events through that thread-scoped surface with
    integration coverage.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Agent jobs (spawn_agents_on_csv) + progress UI (#10935)
    ## Summary
    - Add agent job support: spawn a batch of sub-agents from CSV, auto-run,
    auto-export, and store results in SQLite.
    - Simplify workflow: remove run/resume/get-status/export tools; spawn is
    deterministic and completes in one call.
    - Improve exec UX: stable, single-line progress bar with ETA; suppress
    sub-agent chatter in exec.
    
    ## Why
    Enables map-reduce style workflows over arbitrarily large repos using
    the existing Codex orchestrator. This addresses review feedback about
    overly complex job controls and non-deterministic monitoring.
    
    ## Demo (progress bar)
    ```
    ./codex-rs/target/debug/codex exec \
      --enable collab \
      --enable sqlite \
      --full-auto \
      --progress-cursor \
      -c agents.max_threads=16 \
      -C /Users/daveaitel/code/codex \
      - <<'PROMPT'
    Create /tmp/agent_job_progress_demo.csv with columns: path,area and 30 rows:
    path = item-01..item-30, area = test.
    
    Then call spawn_agents_on_csv with:
    - csv_path: /tmp/agent_job_progress_demo.csv
    - instruction: "Run `python - <<'PY'` to sleep a random 0.3–1.2s, then output JSON with keys: path, score (int). Set score = 1."
    - output_csv_path: /tmp/agent_job_progress_demo_out.csv
    PROMPT
    ```
    
    ## Review feedback addressed
    - Auto-start jobs on spawn; removed run/resume/status/export tools.
    - Auto-export on success.
    - More descriptive tool spec + clearer prompts.
    - Avoid deadlocks on spawn failure; pending/running handled safely.
    - Progress bar no longer scrolls; stable single-line redraw.
    
    ## Tests
    - `cd codex-rs && cargo test -p codex-exec`
    - `cd codex-rs && cargo build -p codex-cli`
  • Add field to Thread object for the latest rename set for a given thread (#12301)
    Exposes through the app server updated names set for a thread. This
    enables other surfaces to use the core as the source of truth for thread
    naming. `threadName` is gathered using the helper functions used to
    interact with `session_index.jsonl`, and is hydrated in:
    - `thread/list`
    - `thread/read`
    - `thread/resume`
    - `thread/unarchive`
    - `thread/rollback`
    
    We don't do this for `thread/start` and `thread/fork`.
  • tests: centralize in-flight turn cleanup helper (#12271)
    ## Why
    
    Several tests intentionally exercise behavior while a turn is still
    active. The cleanup sequence for those tests (`turn/interrupt` + waiting
    for `codex/event/turn_aborted`) was duplicated across files, which made
    the rationale easy to lose and the pattern easy to apply inconsistently.
    
    This change centralizes that cleanup in one place with a single
    explanatory doc comment.
    
    ## What Changed
    
    ### Added shared helper
    
    In `codex-rs/app-server/tests/common/mcp_process.rs`:
    
    - Added `McpProcess::interrupt_turn_and_wait_for_aborted(...)`.
    - Added a doc comment explaining why explicit interrupt + terminal wait
    is required for tests that intentionally leave a turn in-flight.
    
    ### Migrated call sites
    
    Replaced duplicated interrupt/aborted blocks with the helper in:
    
    - `codex-rs/app-server/tests/suite/v2/thread_resume.rs`
      - `thread_resume_rejects_history_when_thread_is_running`
      - `thread_resume_rejects_mismatched_path_when_thread_is_running`
    - `codex-rs/app-server/tests/suite/v2/turn_start_zsh_fork.rs`
      - `turn_start_shell_zsh_fork_executes_command_v2`
    -
    `turn_start_shell_zsh_fork_subcommand_decline_marks_parent_declined_v2`
    - `codex-rs/app-server/tests/suite/v2/turn_steer.rs`
      - `turn_steer_returns_active_turn_id`
    
    ### Existing cleanup retained
    
    In `codex-rs/app-server/tests/suite/v2/turn_start.rs`:
    
    - `turn_start_accepts_local_image_input` continues to explicitly wait
    for `turn/completed` so the turn lifecycle is fully drained before test
    exit.
    
    ## Verification
    
    - `cargo test -p codex-app-server`
  • app-server tests: reduce intermittent nextest LEAK via graceful child shutdown (#12266)
    ## Why
    `cargo nextest` was intermittently reporting `LEAK` for
    `codex-app-server` tests even when assertions passed. This adds noise
    and flakiness to local/CI signals.
    
    Sample output used as the basis of this investigation:
    
    ```text
    LEAK [   7.578s] ( 149/3663) codex-app-server::all suite::output_schema::send_user_turn_output_schema_is_per_turn_v1
    LEAK [   7.383s] ( 210/3663) codex-app-server::all suite::v2::dynamic_tools::dynamic_tool_call_round_trip_sends_text_content_items_to_model
    LEAK [   7.768s] ( 213/3663) codex-app-server::all suite::v2::dynamic_tools::thread_start_injects_dynamic_tools_into_model_requests
    LEAK [   8.841s] ( 224/3663) codex-app-server::all suite::v2::output_schema::turn_start_accepts_output_schema_v2
    LEAK [   8.151s] ( 225/3663) codex-app-server::all suite::v2::plan_item::plan_mode_uses_proposed_plan_block_for_plan_item
    LEAK [   8.230s] ( 232/3663) codex-app-server::all suite::v2::safety_check_downgrade::openai_model_header_mismatch_emits_model_rerouted_notification_v2
    LEAK [   6.472s] ( 273/3663) codex-app-server::all suite::v2::turn_start::turn_start_accepts_collaboration_mode_override_v2
    LEAK [   6.107s] ( 275/3663) codex-app-server::all suite::v2::turn_start::turn_start_accepts_personality_override_v2
    ```
    
    ## How I Reproduced
    I focused on the suspect tests and ran them under `nextest` stress mode
    with leak reporting enabled.
    
    ```bash
    cargo nextest run -p codex-app-server -j 2 --no-fail-fast --stress-count 25 --status-level leak --final-status-level fail -E 'test(suite::output_schema::send_user_turn_output_schema_is_per_turn_v1) | test(suite::v2::dynamic_tools::dynamic_tool_call_round_trip_sends_text_content_items_to_model) | test(suite::v2::dynamic_tools::thread_start_injects_dynamic_tools_into_model_requests) | test(suite::v2::output_schema::turn_start_accepts_output_schema_v2) | test(suite::v2::plan_item::plan_mode_uses_proposed_plan_block_for_plan_item) | test(suite::v2::safety_check_downgrade::openai_model_header_mismatch_emits_model_rerouted_notification_v2) | test(suite::v2::turn_start::turn_start_accepts_collaboration_mode_override_v2) | test(suite::v2::turn_start::turn_start_accepts_personality_override_v2)'
    ```
    
    This reproduced intermittent `LEAK` statuses while tests still passed.
    
    ## What Changed
    In `codex-rs/app-server/tests/common/mcp_process.rs`:
    
    - Changed `stdin: ChildStdin` to `stdin: Option<ChildStdin>` so teardown
    can explicitly close stdin.
    - In `Drop`, close stdin first to trigger EOF-based graceful shutdown.
    - Wait briefly for graceful exit.
    - If still running, fall back to `start_kill()` and the existing bounded
    `try_wait()` loop.
    - Updated send-path handling to bail if stdin is already closed.
    
    ## Why This Is the Right Fix
    The leak signal was caused by child-process teardown timing, not
    test-logic assertion failure. The helper previously relied mostly on
    force-kill timing in `Drop`; that can race with nextest leak detection.
    
    Closing stdin first gives `codex-app-server` a deterministic, graceful
    shutdown path before force-kill. Keeping the force-kill fallback
    preserves robustness if graceful shutdown does not complete in time.
    
    ## Verification
    - `cargo test -p codex-app-server`
    - Re-ran the stress repro above after this change: no `LEAK` statuses
    observed.
    - Additional high-signal stress run also showed no leaks:
    
    ```bash
    cargo nextest run -p codex-app-server -j 2 --no-fail-fast --stress-count 100 --status-level leak --final-status-level fail -E 'test(suite::output_schema::send_user_turn_output_schema_is_per_turn_v1) | test(suite::v2::dynamic_tools::dynamic_tool_call_round_trip_sends_text_content_items_to_model)'
    ```
  • Stabilize app-server detached review and running-resume tests (#12203)
    ## Summary
    - stabilize
    `thread_resume_rejoins_running_thread_even_with_override_mismatch` by
    using a valid delayed second SSE response instead of an intentionally
    truncated stream
    - set `RUST_MIN_STACK=4194304` for spawned app-server test processes in
    `McpProcess` to avoid stack-sensitive CI overflows in detached review
    tests
    
    ## Why
    - the thread-resume assertion could race with a mocked stream-disconnect
    error and intermittently observe `systemError`
    - detached review startup is stack-sensitive in some CI environments;
    pinning a larger stack in the test harness removes that flake without
    changing product behavior
    
    ## Validation
    - `just fmt`
    - `cargo test -p codex-app-server --test all
    suite::v2::thread_resume::thread_resume_rejoins_running_thread_even_with_override_mismatch`
    - `cargo test -p codex-app-server --test all
    suite::v2::review::review_start_with_detached_delivery_returns_new_thread_id`
  • app-server support for Windows sandbox setup. (#12025)
    app-server support for initiating Windows sandbox setup.
    server responds quickly to setup request and makes a future RPC call
    back to client when the setup finishes.
    
    The TUI implementation is unaffected but in a future PR I'll update the
    TUI to use the shared setup helper
    (`windows_sandbox.run_windows_sandbox_setup`)
  • Reapply "Add app-server transport layer with websocket support" (#11370)
    Reapply "Add app-server transport layer with websocket support" with
    additional fixes from https://github.com/openai/codex/pull/11313/changes
    to avoid deadlocking.
    
    This reverts commit 47356ff83c.
    
    ## Summary
    
    To avoid deadlocking when queues are full, we maintain separate tokio
    tasks dedicated to incoming vs outgoing event handling
    - split the app-server main loop into two tasks in
    `run_main_with_transport`
       - inbound handling (`transport_event_rx`)
       - outbound handling (`outgoing_rx` + `thread_created_rx`)
    - separate incoming and outgoing websocket tasks
    
    ## Validation
    
    Integration tests, testing thoroughly e2e in codex app w/ >10 concurrent
    requests
    
    <img width="1365" height="979" alt="Screenshot 2026-02-10 at 2 54 22 PM"
    src="https://github.com/user-attachments/assets/47ca2c13-f322-4e5c-bedd-25859cbdc45f"
    />
    
    ---------
    
    Co-authored-by: jif-oai <jif@openai.com>
  • feat: opt-out of events in the app-server (#11319)
    Add `optOutNotificationMethods` in the app-server to opt-out events
    based on exact method matching
  • fix(app-server): for external auth, replace id_token with chatgpt_acc… (#11240)
    …ount_id and chatgpt_plan_type
    
    ### Summary
    Following up on external auth mode which was introduced here:
    https://github.com/openai/codex/pull/10012
    
    Turns out some clients have a differently shaped ID token and don't have
    a chosen workspace (aka chatgpt_account_id) encoded in their ID token.
    So, let's replace `id_token` param with `chatgpt_account_id` and
    `chatgpt_plan_type` (optional) when initializing the external ChatGPT
    auth mode (`account/login/start` with `chatgptAuthTokens`).
    
    The client was able to test end-to-end with a Codex build from this
    branch and verified it worked!
  • 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
  • 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.
  • [app-server] Add a method to list experimental features. (#10721)
    - [x] Add a method to list experimental features.
  • 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.
  • 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.
  • 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`
  • 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).
  • 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)
  • [connectors] Support connectors part 1 - App server & MCP (#9667)
    In order to make Codex work with connectors, we add a built-in gateway
    MCP that acts as a transparent proxy between the client and the
    connectors. The gateway MCP collects actions that are accessible to the
    user and sends them down to the user, when a connector action is chosen
    to be called, the client invokes the action through the gateway MCP as
    well.
    
     - [x] Add the system built-in gateway MCP to list and run connectors.
     - [x] Add the app server methods and protocol
  • Add layered config.toml support to app server (#9510)
    This PR adds support for chained (layered) config.toml file merging for
    clients that use the app server interface. This feature already exists
    for the TUI, but it does not work for GUI clients.
    
    It does the following:
    * Changes code paths for new thread, resume thread, and fork thread to
    use the effective config based on the cwd.
    * Updates the `config/read` API to accept an optional `cwd` parameter.
    If specified, the API returns the effective config based on that cwd
    path. Also optionally includes all layers including project config
    files. If cwd is not specified, the API falls back on its older behavior
    where it considers only the global (non-project) config files when
    computing the effective config.
    
    The changes in codex_message_processor.rs look deceptively large. They
    mostly just involve moving existing blocks of code to a later point in
    some functions so it can use the cwd to calculate the config.
    
    This PR builds upon #9509 and should be reviewed and merged after that
    PR.
    
    Tested:
    * Verified change with (dependent, as-yet-uncommitted) changes to IDE
    Extension and confirmed correct behavior
    
    The full fix requires additional changes in the IDE Extension code base,
    but they depend on this PR.
  • Expose collaboration presets (#9421)
    Expose collaboration presets for clients
    
    ---------
    
    Co-authored-by: Josh McKinney <joshka@openai.com>
  • fix(app-server): set originator header from initialize JSON-RPC request (#8873)
    **Motivation**
    The `originator` header is important for codex-backend’s Responses API
    proxy because it identifies the real end client (codex cli, codex vscode
    extension, codex exec, future IDEs) and is used to categorize requests
    by client for our enterprise compliance API.
    
    Today the `originator` header is set by either:
    - the `CODEX_INTERNAL_ORIGINATOR_OVERRIDE` env var (our VSCode extension
    does this)
    - calling `set_default_originator()` which sets a global immutable
    singleton (`codex exec` does this)
    
    For `codex app-server`, we want the `initialize` JSON-RPC request to set
    that header because it is a natural place to do so. Example:
    ```json
    {
      "method": "initialize",
      "id": 0,
      "params": {
        "clientInfo": {
          "name": "codex_vscode",
          "title": "Codex VS Code Extension",
          "version": "0.1.0"
        }
      }
    }
    ```
    and when app-server receives that request, it can call
    `set_default_originator()`. This is a much more natural interface than
    asking third party developers to set an env var.
    
    One hiccup is that `originator()` reads the global singleton and locks
    in the value, preventing a later `set_default_originator()` call from
    setting it. This would be fine but is brittle, since any codepath that
    calls `originator()` before app-server can process an `initialize`
    JSON-RPC call would prevent app-server from setting it. This was
    actually the case with OTEL initialization which runs on boot, but I
    also saw this behavior in certain tests.
    
    Instead, what we now do is:
    - [unchanged] If `CODEX_INTERNAL_ORIGINATOR_OVERRIDE` env var is set,
    `originator()` would return that value and `set_default_originator()`
    with some other value does NOT override it.
    - [new] If no env var is set, `originator()` would return the default
    value which is `codex_cli_rs` UNTIL `set_default_originator()` is called
    once, in which case it is set to the new value and becomes immutable.
    Later calls to `set_default_originator()` returns
    `SetOriginatorError::AlreadyInitialized`.
    
    **Other notes**
    - I updated `codex_core::otel_init::build_provider` to accepts a service
    name override, and app-server sends a hardcoded `codex_app_server`
    service name to distinguish it from `codex_cli_rs` used by default (e.g.
    TUI).
    
    **Next steps**
    - Update VSCE to set the proper value for `clientInfo.name` on
    `initialize` and drop the `CODEX_INTERNAL_ORIGINATOR_OVERRIDE` env var.
    - Delete support for `CODEX_INTERNAL_ORIGINATOR_OVERRIDE` in codex-rs.
  • feat: fork conversation/thread (#8866)
    ## Summary
    - add thread/conversation fork endpoints to the protocol (v1 + v2)
    - implement fork handling in app-server using thread manager and config
    overrides
    - add fork coverage in app-server tests and document `thread/fork` usage
  • [fix] app server flaky send_messages test (#8874)
    Fix flakiness of CI test:
    https://github.com/openai/codex/actions/runs/20350530276/job/58473691434?pr=8282
    
    This PR does two things:
    1. move the flakiness test to use responses API instead of chat
    completion API
    2. make mcp_process agnostic to the order of
    responses/notifications/requests that come in, by buffering messages not
    read
  • chore: unify conversation with thread name (#8830)
    Done and verified by Codex + refactor feature of RustRover
  • feat(app-server): thread/rollback API (#8454)
    Add `thread/rollback` to app-server to support IDEs undo-ing the last N
    turns of a thread.
    
    For context, an IDE partner will be supporting an "undo" capability
    where the IDE (the app-server client) will be responsible for reverting
    the local changes made during the last turn. To support this well, we
    also need a way to drop the last turn (or more generally, the last N
    turns) from the agent's context. This is what `thread/rollback` does.
    
    **Core idea**: A Thread rollback is represented as a persisted event
    message (EventMsg::ThreadRollback) in the rollout JSONL file, not by
    rewriting history. On resume, both the model's context (core replay) and
    the UI turn list (app-server v2's thread history builder) apply these
    markers so the pruned history is consistent across live conversations
    and `thread/resume`.
    
    Implementation notes:
    - Rollback only affects agent context and appends to the rollout file;
    clients are responsible for reverting files on disk.
    - If a thread rollback is currently in progress, subsequent
    `thread/rollback` calls are rejected.
    - Because we use `CodexConversation::submit` and codex core tracks
    active turns, returning an error on concurrent rollbacks is communicated
    via an `EventMsg::Error` with a new variant
    `CodexErrorInfo::ThreadRollbackFailed`. app-server watches for that and
    sends the BAD_REQUEST RPC response.
    
    Tests cover thread rollbacks in both core and app-server, including when
    `num_turns` > existing turns (which clears all turns).
    
    **Note**: this explicitly does **not** behave like `/undo` which we just
    removed from the CLI, which does the opposite of what `thread/rollback`
    does. `/undo` reverts local changes via ghost commits/snapshots and does
    not modify the agent's context / conversation history.