3916 Commits

• [codex] [3/4] Activate endpoint plugin recommendations (#27704)

  Summary\n- Await endpoint recommendation selection while constructing
  each authenticated turn, removing the first-turn cache race.\n- Snapshot
  and filter endpoint candidates once per turn, then use that same set for
  the bounded contextual user fragment, tool exposure, and exact install
  validation.\n- Keep recommendation selection ephemeral: do not persist
  recommendation state in or gate resumed threads on prior context.\n-
  Hide the legacy list tool in endpoint mode and preserve legacy discovery
  unchanged when the endpoint is disabled or unavailable.\n- Keep remote
  plugin and connector app identities out of model-visible context and
  attach them only to Codex-owned elicitation metadata.\n\nStack\n- 3/4,
  based on #28400.\n- Endpoint client and cache: #28399.\n- Generalized
  suggestion presentation: #28400.\n- Install-schema follow-up:
  #28403.\n\nValidation\n- \n- \n- \n- \n- Full : 2,649 passed and 88
  environment-dependent tests failed because this sandbox cannot write ,
  nest Seatbelt, or locate auxiliary test binaries.

  Alex Daley · 2026-06-16 23:04:07 +00:00
  a34da3b295
• [codex] [2/4] Generalize plugin suggestion presentation (#28400)

  Summary
  - Add list-backed and developer-context presentations for plugin
  suggestion candidates.
  - Let tool planning, install validation, and request-tool copy follow
  the selected presentation.
  - Keep every production caller on the existing list-backed presentation,
  preserving the current list tool, request schema, connector behavior,
  and model-visible copy.
  - Leave developer-context presentation latent until the final PR in the
  stack.
  
  Stack
  - 2/3, based on #28399.
  - Follow-up: #27704 activates endpoint recommendations.
  
  Validation
  - `just test -p codex-core request_plugin_install`
  - `just test -p codex-core spec_plan`
  - `just fix -p codex-core`
  - `just fmt`
  - `git diff --check`

  Alex Daley · 2026-06-16 22:44:10 +00:00
  587487df9e
• app-server: preserve target-native environment cwd (#28146)

  ## Why
  
  app-server may run on a different OS from the selected exec-server
  environment. Parsing that environment’s cwd with the Codex host’s path
  rules prevents thread startup.
  
  ## What
  
  Carry environment cwd values as `LegacyAppPathString` at the app-server
  boundary and `PathUri` internally. Existing tool-call schemas and
  relative-path behavior stay host-native; remaining local-only consumers
  convert explicitly and leave follow-up TODOs.
  
  The Wine integration test verifies app-server can start a thread and
  complete an ordinary turn with a Windows environment cwd from Linux.
  
  ## Validation
  
  - `bazel test //codex-rs/core/tests/remote_env_windows:smoke-test
  --test_output=errors`
  - focused app-server environment-selection and protocol schema tests
  - scoped Clippy for `codex-core` and `codex-app-server-protocol`

  Adam Perry @ OpenAI · 2026-06-16 21:42:28 +00:00
  f8850cab1d
• Clarify model-generated and legacy app path types (#28577)

  ## Why
  
  `ApiPathString` kind of implies that it can be used anywhere we pull a
  path out of JSON, but it's not really appropriate for tool arguments
  when the model might generate relative paths.
  
  Prefer `String` for model-generated paths and we can handle the
  conversion per feature for now and define a shared abstraction later if
  it makes sense.
  
  # What
  
  Rename `ApiPathString` to `AppLegacyPathString` to clarify its role.
  
  Expand the `path-types` skill to tell the model to leave tool args as
  bare strings.

  Adam Perry @ OpenAI · 2026-06-16 20:47:43 +00:00
  322b83de5e
• [codex] test exec relative additional permissions (#28587)

  ## Why
  
  Review caught some would-be regressions in changes to unified_exec that
  weren't surfaced in CI.
  
  ## What
  
  Add coverage for requesting permissions through unified exec when there
  are additional permissions. Previously this flow was only tested against
  shell_command.

  Adam Perry @ OpenAI · 2026-06-16 20:45:57 +00:00
  a50671e748
• code-mode: extend test coverage to lock in cell lifecycle (#28468)

  This PR establishes the intended behavior as an executable contract
  before a refactor of the cell runtime begins. It also fixes cases where
  a second observer or termination request could replace an existing
  response channel and leave the original caller unresolved.
  
  ### Behavior codified
  - A cell can yield output and subsequently resume to completion.
  - A caller can run a cell until it has no immediately runnable work,
  receive its accumulated output and outstanding tool-call IDs, and then
  resume the same cell when the awaited work is available.
  - Each cell admits one active observer:
     - a second observer receives an explicit busy error
     - the existing observer remains registered and is not displaced
  - A natural result (conclusion of the js module) that has already
  reached the cell controller wins over a later termination request.
  - Otherwise, termination preempts execution and resolves both:
    - the active observer, if present
    - the caller requesting termination
  - Repeated termination requests are rejected while termination is
  already in progress.
  - Terminal responses are sent only after outstanding callback work has
  been handled:
  - natural completion drains notifications and cancels outstanding tool
  calls
  - termination cancels and drains both notification and tool callbacks.
  - Cell removal and cell_closed notification happen after callback
  cleanup

  Channing Conger · 2026-06-16 13:34:16 -07:00
  e93516e259
• [codex] re-enable absolute workdir integration test (#28581)

  ## Why
  
  In #28146 I missed the invariant that an absolute `exec_command` workdir
  must override the environment cwd. The existing integration test would
  have caught that regression, but it was ignored as flaky.
  
  ## What
  
  Re-enable `unified_exec_respects_workdir_override`.
  
  ## Validation
  
  `just test -p codex-core unified_exec_respects_workdir_override`

  Adam Perry @ OpenAI · 2026-06-16 20:19:41 +00:00
  4b7351700f
• [codex] Route MCP file uploads through environment filesystem (#27923)

  ## Why
  
  Codex Apps tools can mark arguments with `openai/fileParams`, but the
  execution path resolved and opened those files directly on the host.
  That bypassed the selected turn environment and prevented annotated file
  arguments from working with remote environments.
  
  ## What changed
  
  - resolve annotated file arguments against the primary turn environment
  - read file metadata and contents through that environment's sandboxed
  `ExecutorFileSystem`
  - reject files over the 512 MiB limit from metadata before reading or
  transferring them
  - retain the buffered upload-size check as defense in depth
  - make the OpenAI upload API accept a filename and buffered contents
  instead of owning local filesystem access
  - describe the model-visible argument as a path in the primary
  environment
  
  This builds on #27927, which added `size` to internal filesystem
  metadata.
  
  ## Testing
  
  - `just test -p codex-api upload_openai_file_returns_canonical_uri`
  - `just test -p codex-mcp
  tool_with_model_visible_input_schema_masks_file_params`
  - `just test -p codex-core mcp_openai_file`
  - `just test -p codex-core
  codex_apps_file_params_upload_environment_files_before_mcp_tool_call`

  pakrym-oai · 2026-06-16 11:27:46 -07:00
  7baf7e467e
• [codex] Warn clearly when code mode output is truncated (#28467)

  ## Summary
  
  - make `formatted_truncate_text` prepend `Warning: truncated output
  (original token count: N)` above the existing `Total output lines`
  header
  - update direct formatter, unified-exec, user-shell, and code-mode
  expectations
  - add core unit coverage that runs in Bazel without requiring the
  skipped V8-backed code-mode integration suite
  
  ## Validation
  
  - `cargo test -p codex-utils-output-truncation -- --nocapture` (17
  passed)
  - `cargo test -p codex-core --lib
  truncated_text_output_starts_with_warning -- --nocapture`
  - `cargo test -p codex-core --test all
  clamps_model_requested_max_output_tokens_to_policy -- --nocapture` (2
  passed)
  - `cargo test -p codex-core --test all
  unified_exec_formats_large_output_summary -- --nocapture`
  - `cargo test -p codex-core --test all
  user_shell_command_output_is_truncated_in_history -- --nocapture`
  - Bazel CI exercises the shared formatter and downstream integration
  expectations

  Ahmed Ibrahim · 2026-06-16 10:37:06 -07:00
  952656356a
• [codex] exec-server: stream files in chunks (#28354)

  ## Why
  
  `fs/readFile` buffers the entire file in one response, which makes large
  remote reads expensive and prevents callers from applying backpressure.
  We need an opt-in streaming path with bounded block sizes while
  preserving the existing single-call API for small and sandboxed reads.
  
  ## What changed
  
  - Add `ExecServerClient::stream`, returning a named `FileReadStream`
  that implements `futures::Stream` and yields immutable 1 MiB byte
  blocks.
  - Add internal `fs/open`, `fs/readBlock`, and `fs/close` RPCs.
  `fs/readBlock` accepts an explicit offset and length.
  - Keep unsandboxed files open between block reads, cap open handles per
  connection, and clean them up on EOF, error, stream drop, explicit
  close, or connection shutdown.
  - Reject platform-sandboxed streaming opens instead of turning the
  one-shot sandbox helper into a persistent server. Existing `fs/readFile`
  behavior is unchanged.
  
  ## Testing
  
  - `just test -p codex-exec-server`
  - Integration coverage for 1 MiB chunking, exact block-boundary EOF,
  sandbox rejection, and continued reads from the opened file after path
  replacement.
  - Handle-manager coverage for non-sequential offsets, variable block
  lengths, the 128-handle limit, and capacity release after close.

  pakrym-oai · 2026-06-16 09:50:55 -07:00
  a4711b88dd
• core: surface terminal subagent errors to parent agents (#28375)

  ## Why
  
  When a subagent exhausts its retries, it emits an `Error`, but the
  generic task lifecycle then emits `TurnComplete(None)`. That completion
  used to overwrite the subagent's `Errored` status with
  `Completed(None)`, so the parent received an empty completion
  notification.
  
  This made a failed child look indistinguishable from a child that
  completed without an answer. In unattended or long-running multi-agent
  work, the root could silently continue without knowing that delegated
  work failed or how to restart it.
  
  ## Behavior
  
  Before, a terminal stream failure was reduced to an empty completion:
  
  ```text
  <subagent_notification>
  {"agent_path":"/root/worker","status":{"completed":null}}
  </subagent_notification>
  ```
  
  Now the parent receives the actual terminal error, bounded to 1,000
  tokens, together with an actionable recovery hint:
  
  ```text
  <subagent_notification>
  {
    "agent_path": "/root/worker",
    "status": {
      "errored": "stream disconnected before completion: stream closed before response.completed"
    },
    "next_action": "This agent's turn failed. If you still need this agent, use `followup_task` to give it another task."
  }
  </subagent_notification>
  ```
  
  The notification remains queue-only: it does not wake the root or replay
  the failed request. The root sees it at the next sampling boundary and
  can use `followup_task` to start a new turn for that agent.
  
  ## What changed
  
  - Added terminal-error precedence to the [agent status
  reducer](https://github.com/openai/codex/blob/e95fcfe2bb6a02f1a75650afa20048859f556511/codex-rs/core/src/agent/status.rs#L23-L34),
  so a closing `TurnComplete` cannot erase an immediately preceding
  `Errored` status.
  - Made MultiAgentV2 completion forwarding use the retained session
  status instead of re-deriving `Completed(None)` from the final event.
  - Extended the [subagent notification
  fragment](https://github.com/openai/codex/blob/e95fcfe2bb6a02f1a75650afa20048859f556511/codex-rs/core/src/context/subagent_notification.rs#L6-L60)
  with a `next_action` for terminal errors and a hard cap on model-visible
  error text.
  - Kept successful completions and interrupted turns unchanged.
  
  ## Verification
  
  - Added a status-reducer test proving that `Errored` survives the
  trailing `TurnComplete`.
  - Added an integration test that exhausts a subagent's stream retries
  and verifies the exact `agent_message` delivered to the parent,
  including the error and `followup_task` guidance.
  - Re-ran the existing successful-completion and interrupted-turn
  notification tests.

  jif · 2026-06-16 14:34:54 +02:00
  1b24ba912a
• [tests] Keep Apps out of generic core test harness (#28508)

  ## Summary
  
  - disable the stable Apps feature in the generic `test_codex()`
  integration-test harness
  - keep Apps-specific tests explicit: their builders re-enable Apps and
  point it at a local mock server
  
  ## Why
  
  Generic tests that use dummy ChatGPT auth were also enabling the
  host-owned `codex_apps` MCP server. That made unrelated tests contact
  `chatgpt.com` and wait for MCP startup, causing the Bazel timeouts
  observed on #28368.
  
  The generic harness should be hermetic and should not start an external
  service that the test did not request. This is test-only; production
  Apps behavior is unchanged. The broader optional-MCP startup behavior is
  being handled separately in #28407.
  
  ## Testing
  
  - `just test -p codex-core -E
  'test(pre_sampling_compact_runs_when_comp_hash_changes) |
  test(model_switch_to_smaller_model_updates_token_context_window) |
  test(codex_apps_file_params_upload_local_paths_before_mcp_tool_call)'`
  - `just fix -p codex-core`
  - `just fmt`

  jif · 2026-06-16 13:07:43 +02:00
  ef8eb8bdd9
• feat: render typed envelopes for multi-agent v2 messages (#28368)

  ## Why
  
  Multi-agent v2 messages need a consistent, model-visible envelope that
  identifies what kind of interaction occurred, who sent it, and which
  agent it targets. Previously, encrypted deliveries exposed only
  `encrypted_content`, while child completion used the legacy
  `<subagent_notification>` shape. That meant the client could not
  consistently present `NEW_TASK`, `MESSAGE`, and `FINAL_ANSWER` using the
  same format.
  
  This change adds the routing envelope as plaintext while keeping task
  and message payloads encrypted. No new Responses API field is required:
  an encrypted delivery is represented as an `input_text` header
  immediately followed by its existing `encrypted_content` item.
  
  Every envelope now follows this shape:
  
  ```text
  Message Type: <NEW_TASK | MESSAGE | FINAL_ANSWER>
  Task name: <recipient agent path>
  Sender: <author agent path>
  Payload:
  <message payload>
  ```
  
  ## Message types
  
  ### `NEW_TASK`
  
  `NEW_TASK` is used when the recipient should begin a new turn, including
  an initial `spawn_agent` task and a later `followup_task`.
  
  For a root agent spawning `/root/worker`, the request contains a
  plaintext envelope followed by the encrypted task:
  
  ```json
  {
    "type": "agent_message",
    "author": "/root",
    "recipient": "/root/worker",
    "content": [
      {
        "type": "input_text",
        "text": "Message Type: NEW_TASK\nTask name: /root/worker\nSender: /root\nPayload:\n"
      },
      {
        "type": "encrypted_content",
        "encrypted_content": "<encrypted task payload>"
      }
    ]
  }
  ```
  
  Conceptually, the model receives:
  
  ```text
  Message Type: NEW_TASK
  Task name: /root/worker
  Sender: /root
  Payload:
  Review the authentication changes and report any regressions.
  ```
  
  ### `MESSAGE`
  
  `MESSAGE` is used for a queued `send_message` delivery. It communicates
  with an existing agent without starting a new turn.
  
  For `/root/worker` reporting progress to the root agent, the request
  contains:
  
  ```json
  {
    "type": "agent_message",
    "author": "/root/worker",
    "recipient": "/root",
    "content": [
      {
        "type": "input_text",
        "text": "Message Type: MESSAGE\nTask name: /root\nSender: /root/worker\nPayload:\n"
      },
      {
        "type": "encrypted_content",
        "encrypted_content": "<encrypted message payload>"
      }
    ]
  }
  ```
  
  Conceptually, the model receives:
  
  ```text
  Message Type: MESSAGE
  Task name: /root
  Sender: /root/worker
  Payload:
  The protocol tests pass; I am checking the resume path now.
  ```
  
  ### `FINAL_ANSWER`
  
  `FINAL_ANSWER` is emitted when a child agent reaches a terminal state
  and reports its result to its parent. Completion payloads are already
  available locally, so the complete envelope is represented as plaintext
  rather than as a plaintext header plus encrypted content.
  
  For `/root/worker` completing work for the root agent, the request
  contains:
  
  ```json
  {
    "type": "agent_message",
    "author": "/root/worker",
    "recipient": "/root",
    "content": [
      {
        "type": "input_text",
        "text": "Message Type: FINAL_ANSWER\nTask name: /root\nSender: /root/worker\nPayload:\nNo regressions found."
      }
    ]
  }
  ```
  
  The model-visible form is:
  
  ```text
  Message Type: FINAL_ANSWER
  Task name: /root
  Sender: /root/worker
  Payload:
  No regressions found.
  ```
  
  Errored, shut down, and missing agents also use `FINAL_ANSWER`, with a
  terminal-status description in the payload.
  
  ## What changed
  
  - Render `NEW_TASK` or `MESSAGE` in
  `InterAgentCommunication::to_model_input_item`, based on whether the
  encrypted delivery starts a turn.
  - Replace the multi-agent v2 `<subagent_notification>` completion
  payload with a model-visible `FINAL_ANSWER` envelope.
  - Document `Task name`, `Sender`, and `Payload` consistently in the
  multi-agent developer instructions.
  - Prevent local-only history projections from treating an encrypted
  message's plaintext header as the complete assistant message.
  - Preserve rollout-trace interaction edges when an agent message
  contains both plaintext and encrypted content.
  
  Legacy multi-agent behavior remains unchanged.
  
  ## Verification
  
  - `just test -p codex-protocol`
  - `just test -p codex-rollout-trace`
  - `just test -p codex-web-search-extension`
  - `just test -p codex-core
  encrypted_multi_agent_v2_spawn_sends_agent_message_to_child`
  - `just test -p codex-core
  plaintext_multi_agent_v2_completion_sends_agent_message`
  - `just test -p codex-core
  multi_agent_v2_followup_task_completion_notifies_parent_on_every_turn`
  - `just test -p codex-core
  multi_agent_v2_completion_queues_message_for_direct_parent`

  jif · 2026-06-16 11:46:59 +02:00
  5b22a8e5b1
• [codex] Use local environment for user shell commands (#28163)

  ## Why
  
  User shell commands still read the legacy turn cwd and session shell
  even though execution context is now owned by selected turn
  environments. App-server also defines `thread/shellCommand` as a
  local-host escape hatch, so it must use an available local environment
  even when a remote environment is primary.
  
  ## What changed
  
  - Add `ResolvedTurnEnvironments::local()` to find the selected local
  environment.
  - Resolve the user shell command cwd and shell from that local
  `TurnEnvironment`.
  - Emit the standard `shell is unavailable in this session` error when no
  selected local environment or resolved local shell is available.
  - Add an integration test covering `/shell` without a local environment.
  
  ## Test plan
  
  - `just test -p codex-core
  user_shell_command_without_local_environment_emits_error`

  pakrym-oai · 2026-06-16 04:55:20 +00:00
  1e015884c5
• [codex] Use expect in integration tests (#28441)

  The workspace denies `clippy::expect_used` in production. Although
  `clippy.toml` allows `expect` in tests, Bazel Clippy compiles
  integration-test helper code in a way that does not receive that
  exemption, which encouraged verbose `unwrap_or_else(... panic!(...))`
  and equivalent `match`/`let else` forms.
  
  This allows `clippy::expect_used` once at each integration-test crate
  root (including aggregated suites and test-support libraries), then
  replaces manual panic-based Result and Option unwraps with
  `expect`/`expect_err`. Standalone `tests/*.rs` files remain their own
  crate roots. Intentional assertion and unexpected-variant panics remain
  unchanged, and the production `expect_used = "deny"` lint remains in
  place.
  
  The cleanup is mechanical and net-negative in line count.

  pakrym-oai · 2026-06-15 21:53:47 -07:00
  e752f7b4ae
• [codex] Add interruptible sleep tool (#28429)

  ## Why
  
  Models sometimes need to pause briefly while waiting for external work,
  but using a shell command for that delay ties the wait to a process and
  does not naturally resume when new turn input arrives.
  
  ## What changed
  
  - add a built-in `sleep` tool behind the under-development `sleep_tool`
  feature
  - accept a bounded `duration_ms` argument, matching the millisecond
  convention used by unified exec
  - end the sleep early when either steered user input or mailbox input
  arrives
  - include elapsed wall-clock time in completed and interrupted outputs
  - emit a dedicated core `SleepItem` through `item/started` and
  `item/completed`
  - expose the sleep item as app-server v2 `ThreadItem::Sleep` and retain
  it in reconstructed thread history
  - regenerate the configuration schema for the new feature flag
  - regenerate app-server JSON and TypeScript schema fixtures
  
  ## Test plan
  
  - `just test -p codex-core sleep_tool_follows_feature_gate`
  - `just test -p codex-core any_new_input_interrupts_sleep`
  - `just test -p codex-app-server-protocol`
  - `just test -p codex-app-server
  sleep_emits_started_and_completed_items`

  pakrym-oai · 2026-06-15 21:39:21 -07:00
  08901fc8e1
• [codex] Bind shell snapshots to retained thread environments (#28421)

  ## Why
  
  Shell snapshots are currently session-scoped even though shell and cwd
  are properties of a selected turn environment. That makes snapshot
  refresh depend on separate session-cwd plumbing, prevents retained
  environments from retaining their snapshot work, and can make snapshot
  construction use a different shell than command execution.
  
  This follows #27955 by making the retained thread-environment service
  own environment snapshot lifecycles. Session configuration remains the
  requested selection state, while `ThreadEnvironments` remains the source
  of successfully resolved environments.
  
  ## What changed
  
  - Configure the shell-snapshot builder before initial environment
  resolution.
  - Start each local environment snapshot task when its `TurnEnvironment`
  is built and retain that shared task while environment ID and cwd still
  match.
  - Inherit retained environment snapshots into spawned child threads.
  - Carry the selected `TurnEnvironment` through shell runtimes so
  snapshot construction and command execution use the same
  environment-specific shell and cwd.
  - Load project instructions and warm plugins/skills after initial
  environment resolution.
  - Continue decoding invalid UTF-8 instruction files lossily without
  emitting a startup warning.
  - Keep requested selections in `SessionConfiguration`; failed or
  duplicate resolutions only affect the resolved environment snapshot.
  
  ## Validation
  
  - `cargo check -p codex-core --tests`
  - `just test -p codex-home instructions` (6 passed)
  - Focused environment, instruction, shell-snapshot, and user-shell tests
  (84 passed)
  - Focused shell-snapshot, user-shell, and unified-exec tests (126
  passed; two event-timing tests passed on retry)

  pakrym-oai · 2026-06-15 20:10:53 -07:00
  022f1221e8
• Run core integration tests against a Wine-backed Windows executor (#28401)

  ## Why
  
  We want to exercise a linux app-server against a windows exec-server
  without having to repeat every test case. This approach has slight
  precedent in the remote docker test setup.
  
  ## What
  
  Run the shared `codex-core` integration suite against Windows
  exec-server behavior from Linux. This makes cross-OS path and shell
  regressions visible while keeping unsupported cases owned by individual
  tests.
  
  - Add `local`, `docker`, and `wine-exec` test environment selection with
  legacy Docker compatibility.
  - Extend `codex_rust_crate` to generate a sharded Wine-exec variant
  using a cross-built Windows server and pinned Bazel Wine/PowerShell
  runtimes.
  - Teach remote-aware helpers about Windows paths and track temporary
  incompatibilities with source-local `skip_if_wine_exec!` calls and
  follow-up reasons.

  Adam Perry @ OpenAI · 2026-06-16 00:38:41 +00:00
  1fe89de576
• Add a toggle for realtime startup context (#28405)

  ## Summary
  - Add `includeStartupContext` to realtime start requests so callers can
  explicitly skip Codex startup context while keeping the backend prompt
  - Thread the new flag through protocol types, request processing, and
  realtime session config
  - Update app-server docs and coverage for the new default and opt-out
  behavior
  
  ## Testing
  - Added protocol serialization coverage for `includeStartupContext`
  - Added realtime integration coverage for starting a session with
  startup context disabled

  guinness-oai · 2026-06-15 17:14:22 -07:00
  d5b4b98370
• [codex] Fix missing response item metadata in tests (#28415)

  Summary
  - Add the two missing `metadata: None` initializers after #28355 made
  response-item metadata required.
  - Restore test compilation for `codex-core` and `codex-api` on main.
  
  Validation
  - `git diff --check`
  - `just fmt` (Rust formatting passed; unrelated Python formatter steps
  could not use the sandboxed shared `uv` cache)
  - Focused crate tests are running after PR creation.

  Alex Daley · 2026-06-16 00:08:39 +00:00
  515f705426
• Use PathUri in filesystem permission paths for exec-server (#28165)

  ## Why
  
  Progress towards letting app-server and exec-server run on different
  platforms, specifically for sandbox configuration.
  
  ## What
  
  - Make the filesystem path containment hierarchy generic, defaulting to
  `AbsolutePathBuf` for now.
  - Have clients specify `AbsolutePathBuf` or `PathUri` directly where
  needed.
  - Use `PathUri` throughout exec-server filesystem protocol and trait
  boundaries.
  - Implement `From` for conversion to path URIs and `TryFrom` for
  fallible conversion to absolute paths through the generic type
  hierarchy.

  Adam Perry @ OpenAI · 2026-06-15 23:55:23 +00:00
  46f17930b6
• Add realtime speech append control (#27917)

  ## Why
  
  Realtime voice harness tuning needs app-side control over what backend
  Codex text is spoken. Backend orchestrator text is written for a reading
  UI, so automatically speaking every preamble, progress update, or final
  assistant message can make the realtime voice model too chatty.
  
  For experimentation, clients need two simple controls: keep app/client
  text-item injection on the existing item-create path, and add an
  explicit speakable path that app code can call only when it wants
  realtime to speak. Automatic Codex output also needs an opt-in way to
  switch from the protocol's default speakable path to regular realtime
  items, with a caller-provided prefix so prompt wording can be tuned
  outside core.
  
  The default remains unchanged: if a client omits the new start fields
  and never calls `appendSpeech`, automatic backend output continues down
  the existing speakable path for the selected realtime protocol.
  
  ## What Changed
  
  - Adds experimental `thread/realtime/appendSpeech` for app-provided
  speakable text.
  - Keeps existing `thread/realtime/appendText` as the item-create API for
  app-provided realtime text items.
  - Adds `codexResponsesAsItems` / `codex_responses_as_items` on
  `thread/realtime/start` to send automatic Codex responses with
  `conversation.item.create` instead of the protocol's default speakable
  output path.
  - Adds `codexResponseItemPrefix` / `codex_response_item_prefix` so
  clients can prepend experiment instructions to those automatic Codex
  response items.
  - Keeps literal `conversation.handoff.append` routing scoped to the v1
  speakable path; v2 default speech uses its item/function-output plus
  `response.create` behavior.
  - Removes the earlier public silent-context API and hardcoded
  silent-context prefix.
  - Updates realtime tests to cover default automatic speakable behavior,
  opt-in automatic item-create behavior, and explicit `appendSpeech`
  behavior.
  
  ## Validation
  
  - `cargo check -p codex-core -p codex-app-server -p codex-api`
  - `just test -p codex-app-server realtime_conversation`
  - `just test -p codex-core realtime_conversation` (50/51 passed in the
  filtered parallel run; the lone failure passed when rerun in isolation)
  - `just test -p codex-core
  conversation_mirrors_assistant_message_text_to_realtime_handoff`
  - `just test -p codex-api
  e2e_connect_and_exchange_events_against_mock_ws_server`
  - `just fix -p codex-core`
  - `just fix -p codex-app-server`
  - `cargo build -p codex-cli`

  guinness-oai · 2026-06-15 16:15:58 -07:00
  1d8ff89aa3
• [codex] retain resolved environments across turns (#27955)

  ## Why
  
  Selected execution environments are thread-scoped resources, but startup
  and turn construction repeatedly resolved their IDs and working
  directories. That discarded existing environment handles and shell
  metadata even when a selection had not changed.
  
  Session configuration updates also need to affect future turns without
  changing the resolved environment set already captured by a running
  turn.
  
  ## What changed
  
  - Create a `ThreadEnvironments` service inside `Codex` from the spawned
  `EnvironmentManager` and raw environment selections, then store it on
  `SessionServices`.
  - Split service construction from `update_selections`, allowing session
  configuration updates to mutate the resolved set in place.
  - Retain an existing `TurnEnvironment` when its environment ID and
  working directory match; resolve only added or changed selections and
  remove selections that are no longer present.
  - Normalize duplicate IDs by keeping the first selection and skip
  individual selections that fail to resolve instead of rejecting the
  entire update.
  - Give each `TurnContext` a cloned `TurnEnvironmentSnapshot`, so later
  session configuration updates affect future turns without rewriting an
  active turn.
  - Reuse the service-owned environment manager and resolved snapshot for
  startup work, MCP initialization, and child-thread spawning instead of
  flowing resolved environments through spawn arguments.
  
  ## Test plan
  
  - `cargo check -p codex-core --tests`
  - `just test -p codex-core environment_selection`
  - `just test -p codex-core turn_environments`
  - `just test -p codex-core
  session_update_settings_does_not_rewrite_sticky_environment_cwds`
  - `just test -p codex-core
  default_turn_does_not_overlay_legacy_fallback_cwd_onto_stored_thread_environments`

  pakrym-oai · 2026-06-15 16:15:07 -07:00
  9728992fab
• Deflake realtime handoff steering test (#28300)

  ## Summary
  - keep the realtime mock websocket open for the handoff steering test
  after scripted responses
  - avoid racing the mock server close before the standalone handoff
  append is observed, which was showing up as a Windows timeout in CI
  
  __Details__:
  Failures in samples seem to be caused by:
  1. The mock websocket sends conversation.handoff.requested.
  2. The mock immediately closes the websocket because
  start_websocket_server(...) defaults to close_after_requests: true.
  3. On Windows, that close often surfaces as os error 10053 / 10054.
  4. The realtime stream shuts down before the routed handoff finishes
  creating/steering the follow-up request.
  5. The test waits for the expected follow-up event and times out.
  
  The PR changes only step 2: for this test, the mock websocket stays open
  after sending the scripted handoff event. The same handoff event is
  still sent, and the test still asserts the important steering behavior:
  1. first Responses request has the original prompt
  2. first request does not contain realtime delegation
  3. second Responses request does contain the realtime delegation
  
  ## Validation
  - `just fmt`
  - `just test -p codex-core --test all
  suite::realtime_conversation::inbound_handoff_request_steers_active_turn`
  
  ## Recent CI failures with the same signature
  
  -
  https://github.com/openai/codex/actions/runs/27538033492/job/81392362858
    - 2026-06-15, `[codex] update multi-agent v2 prompts`
  - same test failed after `conversation.handoff.requested`; websocket
  read failed with `os error 10053`
  
  -
  https://github.com/openai/codex/actions/runs/27543877820/job/81412200651
  - 2026-06-15, `feat: dispatch queued user messages through core idle
  extensions`
    - same test failed; websocket read failed with `os error 10054`
  
  -
  https://github.com/openai/codex/actions/runs/27544342375/job/81413801641
    - 2026-06-15, `[codex] Make marketplace loading capability aware`
    - same test failed; websocket read failed with `os error 10053`

  felixxia-oai · 2026-06-15 23:50:11 +01:00
  db8927a8e2
• [codex] Reuse Apps policy evaluation across MCP tool exposure (#27813)

  ## Summary
  
  - move `AppToolPolicyEvaluator` and the Apps config/requirements policy
  logic from `codex-core` into `codex-connectors`
  - resolve one immutable policy snapshot per exposure build and reuse it
  across every Codex Apps MCP tool
  - keep core as a thin adapter from MCP metadata to connector-owned
  policy input while preserving the call-time defense-in-depth check
  
  ## Why
  
  `build_mcp_tool_exposure` evaluates every Codex Apps tool on each
  sampling request. The old path rebuilt effective Apps configuration for
  every tool, and the policy implementation lived in the already-large
  core crate even though it is connector-specific.
  
  The connector-owned evaluator keeps the expensive config merge/decode
  out of the loop and gives core only the effective policy result it
  needs.
  
  ## Performance
  
  With the real 557-tool Apps corpus, `build_mcp_tool_exposure` measured
  3.74 ms and 3.33 ms after the extraction (3.54 ms mean). The original
  path measured 807 ms mean, so the final result retains the 99.6%
  reduction.
  
  ## Validation
  
  - `cargo check -p codex-connectors -p codex-core`
  - `just test -p codex-connectors` — 15 passed
  - `just test -p codex-core --lib connectors` — 35 passed
  - `just test -p codex-core --lib mcp_tool_exposure` — 5 passed
  - `just test -p codex-core --lib mcp_tool_call` — 72 passed
  - `just bazel-lock-update`
  - `just bazel-lock-check`
  - `just fix -p codex-connectors`
  - `just fix -p codex-core`
  - `just fmt`

  Matthew Zeng · 2026-06-15 15:24:33 -07:00
  1fbaac1e50
• Respect blocking PostToolUse hooks in code mode (#28365)

  ## Summary
  
  Make blocking hook behavior reliable for tools invoked from code mode.
  
  Previously, a `PostToolUse` hook could block a completed tool result,
  but code mode would still return the original typed result to
  JavaScript. The hook appeared blocked in hook telemetry while the
  running script continued with the result.
  
  This change:
  
  - rejects the nested JavaScript tool promise when `PostToolUse` blocks
  - normalizes `decision: "block"` and exit code 2 to the same blocking
  behavior
  - surfaces the hook feedback as the rejected promise's error
  - adds end-to-end coverage for the relevant PreToolUse and PostToolUse
  interactions
  
  ## Hook semantics in code mode
  
  | Hook behavior | Code-mode result |
  |---|---|
  | PreToolUse block | Reject the promise before the tool executes |
  | PreToolUse `updatedInput` | Execute the rewritten invocation and
  return its result |
  | PostToolUse `decision: "block"` | Execute the tool, then reject the
  promise with the hook reason |
  | PostToolUse exit code 2 | Same behavior as `decision: "block"` |
  | PostToolUse `continue: false` | Preserve the existing feedback-only
  behavior; do not reject the promise |
  
  ## Test coverage
  
  Added or strengthened end-to-end coverage proving that:
  
  - a PreToolUse block rejects the JavaScript promise before execution
  - a PreToolUse input rewrite executes only the rewritten command
  - JavaScript receives the rewritten command's result
  - PostToolUse `decision: "block"` rejects after the command executes
  - PostToolUse exit code 2 has the same behavior
  - the hook observes the original completed tool response
  - the blocked original result does not reach JavaScript
  - existing direct-mode replacement behavior remains intact
  - `continue: false` without a reason produces deterministic fallback
  feedback

  Abhinav · 2026-06-15 15:12:26 -07:00
  d7f298fe20
• [codex] Add created-by-me remote plugin marketplace (#28203)

  ## Summary
  - add the `created-by-me-remote` marketplace backed by paginated
  `scope=USER` plugin directory and installed-plugin requests
  - include USER plugins in installed-plugin caching, bundle sync, and
  stale-cache cleanup without client-side discoverability filtering
  - expose the marketplace through app-server v2 and regenerate the
  protocol schemas
  
  ## Testing
  - `cargo build -p codex-app-server --bin codex-app-server`
  - production-auth `plugin/list` smoke test for `created-by-me-remote`
  (returned the expected USER plugin as installed and enabled)
  - `just test -p codex-core-plugins` (221 passed)
  - `just test -p codex-app-server-protocol` (231 passed)
  - `just test -p codex-app-server suite::v2::plugin_list::` (37 passed)
  - `just fix -p codex-core-plugins -p codex-app-server-protocol -p
  codex-app-server`
  - `just fmt`

  Eric Ning · 2026-06-15 22:07:07 +00:00
  709f19e111
• feat(core): add metadata field to ResponseItem (#28355)

  ## Description
  
  This PR adds an optional `metadata` field to `ResponseItem` for
  Responses API calls. Only mechanical plumbing, no actual values
  populated and sent yet. Turns out just adding a new field to
  `ResponseItem` has quite a large blast radius already.
  
  This change is backwards compatible because `metadata` is optional and
  omitted when absent, so existing response items and rollout history
  without it still deserialize and requests that do not set it keep the
  same wire shape. For provider compatibility, we strip out `metadata`
  before non-OpenAI Responses requests so Azure and AWS Bedrock never see
  this field.
  
  My followup PR here will actually make use of it to start storing and
  passing along `turn_id`: https://github.com/openai/codex/pull/28360
  
  ## What changed
  
  - Added `ResponseItemMetadata` with optional `turn_id`, plus optional
  `metadata` on Responses API item variants and inter-agent communication.
  - Preserved item metadata through response-item rewrites such as
  truncation, missing tool-output synthesis, compaction history
  rebuilding, visible-history conversion, rollout/resume, and generated
  app-server schemas/types.
  - Strip item metadata from non-OpenAI Responses requests while
  preserving it for OpenAI-shaped requests.
  - Updated the mechanical fixture/test construction churn required by the
  new optional field.

  Owen Lin · 2026-06-15 15:05:28 -07:00
  040dafa32d
• core: cache the tool search handler per session (#27258)

  ## Why
  
  Tool router construction rebuilds the deferred-tool BM25 index during
  session initialization and before each sampling continuation, even when
  the searchable tool metadata is unchanged. Local profiling measured
  `append_tool_search_executor` at roughly 113 ms per continuation, making
  repeated index construction the largest measured router-building cost.
  
  ## What changed
  
  - Add a session-scoped `ToolSearchHandlerCache` so continuations and
  user turns can reuse the existing handler.
  - Key reuse on the complete ordered `Vec<ToolSearchInfo>`, rebuilding
  when searchable text, loadable tool specs, source metadata, or ordering
  changes.
  - Build handlers outside the cache lock and recheck before publishing
  them, avoiding holding the mutex during index construction.
  
  ## Verification
  
  - `cache_reuses_identical_search_infos_and_rebuilds_changed_inputs`
  covers exact cache reuse and invalidation when the ordered search
  metadata changes.
  - Local rollout profiling showed the initial router build populating the
  cache and unchanged later continuations reusing it:
    - uncached: 118 ms median across 14 spans from 3 rollouts
    - cached: 4 ms median across 12 spans from 3 rollouts

  mchen-oai · 2026-06-15 14:48:30 -07:00
  af99f6a72f
• Add hidden Windows sandbox wrapper entrypoint (#28358)

  ## Why
  
  This is the second PR in the Windows fs-helper sandbox stack. The
  fs-helper path needs a Windows sandbox launcher that has the same
  argv-shaped contract as macOS `sandbox-exec` and `codex-linux-sandbox`,
  but this PR only introduces that hidden launcher. It does not route
  fs-helper through it yet.
  
  The hidden launcher still needs to be policy-complete before later
  direct-spawn callers use it. In particular, it has to carry the same
  Windows sandbox policy details that the existing spawn paths already
  understand: proxy enforcement, read/write root overrides, and
  deny-read/deny-write overrides.
  
  ## What Changed
  
  - Added the hidden `codex.exe --run-as-windows-sandbox` arg1 dispatch
  path.
  - Added `windows-sandbox-rs/src/wrapper.rs`, which parses the wrapper
  argv, launches the requested command through the shared Windows sandbox
  session runner from PR1, and forwards stdio.
  - Added `create_windows_sandbox_command_args_for_permission_profile()`
  so later direct-spawn callers can build the wrapper argv consistently.
  - Made the wrapper argv round-trip the full Windows sandbox policy
  surface it needs later: workspace roots, environment, permission
  profile, sandbox level, private desktop, proxy enforcement, read/write
  root overrides, and deny-read/deny-write overrides.
  - Carried `proxy_enforced` through the shared Windows session request so
  proxy-managed executions continue to use the offline/elevated sandbox
  identity.
  - Added wrapper argument round-trip coverage for the full policy fields.
  
  ## Verification
  
  - `just test -p codex-windows-sandbox windows_wrapper_args_round_trip`
  - `just test -p codex-arg0`
  - `just test -p codex-core exec::tests::windows_`
  - `just fix -p codex-windows-sandbox -p codex-core -p codex-cli`
  
  Local note: the full `just fmt` command still fails on this workstation
  in non-Rust formatter setup (`uv` cache access denied and missing
  `dotslash`/buildifier), but the Rust formatter phase completed.

  iceweasel-oai · 2026-06-15 21:30:32 +00:00
  fbbe7706d6
• Add Windows unified exec yield floor (#27086)

  ## Why
  
  The Windows `unified_exec` experiment regressed at the turn level in a
  way that points to premature backgrounding / extra command cycles rather
  than individual responses getting heavier:
  
  - `codex_local_tool_calls_per_turn` was up about 20.7%.
  - `codex_local_blended_tokens_per_turn` was up about 4.1%, and
  `codex_local_output_tokens_per_turn` was up about 4.0%.
  - `codex_local_response_latency_per_turn` was up about 8.3%.
  - The primary activity metrics also moved down: `codex_turns` about
  -6.6%, `codex_dau` about -1.0%, and `codex_local_hourly_active_users`
  about -3.0%.
  
  At the same time, the per-response metrics moved in the other direction:
  blended tokens per response, output tokens per response, and latency per
  response were all lower in test. That suggests the bad turn-level shape
  is largely about extra tool/model cycles, not each response being slower
  or more expensive on its own.
  
  Local Windows benchmarking showed the likely mechanism: shell-wrapped
  commands pay a large PowerShell startup/teardown tax before the actual
  command has much time to run. In the benchmark, the PowerShell wrapper
  added roughly 0.7-1.0s versus direct exec:
  
  - Windows PowerShell: about 740ms p50 / 800ms p90 overhead versus direct
  exec.
  - PowerShell 7 (`pwsh`): about 930ms p50 / 980ms p90 overhead versus
  direct exec.
  
  The model commonly asks for a 1s initial yield. On Windows, that can
  spend nearly the whole window waiting on PowerShell machinery, so
  otherwise-short commands are more likely to return as background
  sessions and require follow-up polling/tool calls.
  
  This is intentionally a temporary unlock. It gives Windows closer to the
  same useful post-shell command window as other platforms while we work
  on reducing the PowerShell tax directly, for example with persistent
  PowerShell workers or conservative direct-exec paths for commands that
  do not need shell semantics.
  
  ## What changed
  
  - Adds a Windows-only 2s floor to `unified_exec`'s initial
  `yield_time_ms` clamp.
  - Keeps larger model-requested waits unchanged, including the existing
  10s default.
  - Keeps the existing 30s max clamp.
  - Leaves non-Windows behavior unchanged.
  - Adds platform-gated tests for both the Windows floor and the
  non-Windows clamp behavior.
  
  ## Verification
  
  - `just test -p codex-core unified_exec`

  iceweasel-oai · 2026-06-15 13:56:18 -07:00
  e7a9988d1a
• core: let steer interrupt wait_agent (#28341)

  ## Why
  
  `wait_agent` can block for a long timeout while waiting for sub-agent
  mailbox activity. Although same-turn user steer is accepted during that
  tool call, the input remains pending until the wait returns, so an
  explicit request to change direction can appear unresponsive.
  
  ## What changed
  
  - Notify active `wait_agent` calls when user input is steered into the
  current turn.
  - Check for already-pending steer input when subscribing so input that
  races with tool startup is not missed.
  - Distinguish mailbox activity, steered input, and timeout outcomes,
  returning `Wait interrupted by new input.` for the steer path.
  - Update the `wait_agent` tool description to document the early-return
  behavior.
  
  ## Testing
  
  - `just test -p codex-core input_queue_`
  - `just test -p codex-core wait_agent`
  
  The coverage includes steer notification before and after subscription,
  plus an end-to-end test that verifies the interrupted wait result and
  steered user input are both included exactly once in the follow-up model
  request.

  jif · 2026-06-15 20:08:15 +02:00
  ee40dddbf6
• guardian: isolate review context from skills and memories (#28285)

  ## Why
  
  Guardian reviews embed the parent session transcript as untrusted
  evidence. Skill or plugin mentions in that transcript must not be
  interpreted as requests to inject more instructions into the Guardian
  request, and memory context adds unrelated model-visible context to an
  approval decision.
  
  Keeping those sources out of the nested review session makes the request
  smaller and preserves the trust boundary around the transcript being
  assessed.
  
  ## What changed
  
  - Skip skill and plugin discovery when building turns for Guardian
  reviewer sessions.
  - Disable memory context and dedicated memory tools in the derived
  Guardian configuration.
  - Extend the Guardian request-layout coverage to verify that a `$skill`
  mention remains visible only as transcript evidence while neither the
  skill body nor memory context is injected.
  - Expand the Guardian configuration test to cover the disabled memory
  settings.
  
  ## Testing
  
  - Updated the Guardian review request snapshot and assertions for skill
  and memory isolation.
  - Extended the Guardian session configuration test to cover memories.

  jif · 2026-06-15 19:24:50 +02:00
  a18de1f3b6
• [codex] preserve explicit environment cwd (#27995)

  ## Why
  
  `TurnEnvironmentSelections::new` rewrote the primary environment's
  explicit `cwd` to the legacy fallback cwd. For a remote-first selection,
  this could replace the remote working directory with a local fallback
  path and made the legacy cwd overlay authoritative over
  environment-owned state.
  
  ## What changed
  
  - Preserve every explicit environment cwd when constructing turn
  environment selections.
  - Keep `cwd`-only app-server updates compatible by rebuilding the
  default environment selections at the requested cwd.
  - Cover both explicit primary cwd preservation and cwd-only updates
  reaching the model-visible execution environment.
  
  ## Testing
  
  - `just test -p codex-core
  session_update_settings_does_not_rewrite_sticky_environment_cwds`
  - `just test -p codex-core
  environment_settings_preserve_explicit_primary_cwd`
  - `just test -p codex-app-server
  thread_settings_update_cwd_retargets_default_environment`

  pakrym-oai · 2026-06-15 17:17:34 +00:00
  bd4fe31c5a
• [codex] remove stale PathExt import (#28344)

  ## Why
  
  `main` fails dev-profile Cargo and Bazel Clippy builds because
  `core/src/tools/runtimes/mod_tests.rs` imports `PathExt` after its last
  use was removed. With warnings denied, that stale import prevents
  `codex-core` test targets from compiling across platforms.
  
  ## What changed
  
  Remove the unused `PathExt` import. Remaining `.abs()` calls in the
  module operate on `PathBuf` and continue to use `PathBufExt`.
  
  ## Validation
  
  - `just fmt`
  - Focused `codex-core` test compile attempted; blocked locally by disk
  exhaustion before compilation completed. The CI failure itself is the
  unused-import diagnostic this change removes.

  pakrym-oai · 2026-06-15 09:56:21 -07:00
  5e58b6d77f
• avoid cloning websocket request history (#28313)

  ## Why
  
  WebSocket continuations only send the new part of a request. Checking
  whether a request could be continued was cloning the full previous
  request, the current request, and their input history.
  
  For long conversations or large tool lists, that meant copying several
  request-sized values on every continuation.
  
  ## What changed
  
  - compare the request settings by reference
  - check the previous input and server response as borrowed prefixes
  - allocate only the new input items that will be sent
  
  The reuse rules stay the same, including ignoring `client_metadata` for
  this check.
  
  The comparison is still `O(n)`, but it removes several `O(n)`
  allocations and copies. Temporary memory no longer grows by multiple
  full request sizes for each continuation.
  
  ## Performance
  
  Local rollout traces show continuation checks on turns around 260k input
  tokens. Before this change the reuse gate cloned the previous request,
  the current request, and the previous input history before deciding
  whether it could continue incrementally. After this change it borrows
  those structures and allocates only the incremental tail. For large
  continuations with a small delta, that removes roughly three
  request-sized copies from the hot path and reduces temporary memory from
  multiple full request sizes to just the new tail.
  
  ## Validation
  
  - `just test -p codex-core
  responses_websocket_v2_creates_with_previous_response_id_on_prefix`
  - `just test -p codex-core
  responses_websocket_v2_creates_without_previous_response_id_when_non_input_fields_change`

  jif · 2026-06-15 18:48:47 +02:00
  95765542c9
• avoid cloning sampling request input (#28306)

  ## Why
  
  Every model request cloned the full prepared input just to keep it for
  the legacy after-agent hook. That copy gets more expensive as the
  conversation grows.
  
  ## What
  
  Move the prepared input into the sampling loop and return it with the
  result. If the request retries, keep the first input so the hook still
  sees the same data as before.
  
  This removes one `O(n)` clone per sampling request, where `n` is the
  size of the prepared input. It saves `O(n)` copy work and `O(n)`
  temporary memory.
  
  No behavior change is intended.
  
  ## Performance
  
  Local rollout traces show turns reaching roughly 260k input tokens. On
  turns of that size, this removes the only unconditional full
  prepared-input clone on the happy path. That avoids one request-sized
  allocation/copy per sampling attempt for large conversations, and the
  savings scale linearly with request size.
  
  ## Testing
  
  - `just test -p codex-core continue_after_stream_error`
  - `just fix -p codex-core`

  jif · 2026-06-15 18:26:44 +02:00
  e67bc683f3
• linearize history output normalization (#28309)

  ## Why
  
  When we prepare the conversation history, every tool call needs a
  matching output.
  
  Before this change, we scanned the full history again for every call. In
  a tool-heavy conversation, that makes the work `O(items x calls)`, or
  `O(n^2)` in the worst case.
  
  ## What
  
  Scan the history once and collect the IDs of existing outputs. Then each
  call can check its ID with an expected `O(1)` lookup.
  
  The full normalization step is now expected `O(n)`. The output order and
  missing-output behavior stay the same.
  
  ## Performance
  
  Based on local rollout traces, one tool-heavy session reached roughly
  17,050 transcript items with about 4,292 tool-call items. On a history
  of that shape, the old `calls x items` scan does about 73.2 million
  membership checks, while the new pass does about 21.3 thousand set
  inserts/lookups. That is roughly 3.4k times less membership work in this
  normalization step.
  
  ## Validation
  
  - `just test -p codex-core normalize_` (19 passed)

  jif · 2026-06-15 18:26:34 +02:00
  828d7476a0
• [codex] simplify memory read metrics (#28164)

  ## Why
  
  Memory read telemetry currently reconstructs the executable shell
  command after a tool call finishes. That duplicates shell, login-policy,
  and cwd resolution owned by the tool handlers, and can diverge from the
  environment-specific command that unified exec actually ran.
  
  ## What changed
  
  - Expose the existing restricted shell-script parser directly for raw
  script text.
  - Parse `shell_command` and `exec_command` input into plain command argv
  before classifying memory reads.
  - Preserve all-or-nothing safe-command validation for multi-command
  scripts.
  - Remove cwd resolution, shell selection, and the unnecessary async
  boundary from memory read metric emission.
  
  ## Testing
  
  - `just test -p codex-shell-command`
  - `cargo check -p codex-core`

  pakrym-oai · 2026-06-15 08:28:02 -07:00
  42ad752f36
• [codex] simplify shell snapshot ownership (#27756)

  ## Why
  
  Shell snapshot lifecycle state was split between `Shell` and
  `SessionServices`: `Shell` carried the receiver while session code
  exposed and forwarded the raw sender. That coupled shell identity to
  mutable snapshot state and made refresh, inheritance, and file lifetime
  harder to reason about.
  
  ## What changed
  
  - make each `Arc<ShellSnapshot>` represent one cwd-specific snapshot
  generation
  - store the active generation in `SessionServices` with `ArcSwapOption`
  - have construction start the background build and expose only a
  cwd-validated snapshot path
  - use `ShellSnapshotFile` ownership to delete snapshot files
  automatically
  - pass snapshot paths explicitly to shell runtimes instead of storing
  snapshot state on `Shell`
  - preserve inherited and in-flight generations by pinning their `Arc`
  while they are in use
  
  ## Test plan
  
  - `cargo check -p codex-core --lib`
  - `just test -p codex-core 'shell_snapshot::tests'`
  - `just test -p codex-core
  shell_command_snapshot_still_intercepts_apply_patch`
  - `just test -p codex-core
  shell_snapshot_deleted_after_shutdown_with_skills`

  pakrym-oai · 2026-06-15 08:18:13 -07:00
  1aa3e432cc
• skills: hide orchestrator skills with a local executor (#28333)

  ## Why
  
  App-server threads without a local executor need orchestrator-owned
  skills from the hosted `codex_apps` MCP server. Threads with the local
  executor already discover installed skills from the local filesystem.
  
  After the orchestrator skill provider was enabled for every app-server
  thread, local-executor threads also received the hosted skill catalog
  and the `skills.list` and `skills.read` tools. This changed the existing
  local behavior and could expose a second hosted copy of a skill that was
  already installed locally.
  
  ## What changed
  
  - Expose the thread's selected execution environments to extensions at
  thread startup.
  - Enable orchestrator skills only when the reserved local environment is
  not selected.
  - Apply that decision consistently to hosted skill catalog discovery,
  explicit skill injection, and the `skills.list` and `skills.read` tools.
  
  ## Verification
  
  - The existing no-executor app-server test continues to verify hosted
  skill discovery, invocation, and child-resource reads.
  - A new app-server test verifies that local-executor threads do not
  receive hosted skill context or `skills.*` tools.

  jif · 2026-06-15 17:15:45 +02:00
  6d9df687a5
• Represent dynamic tools with explicit namespaces internally (#27365)

  Follow-up to #27356.
  
  ## Stack note
  
  This PR changes Codex's internal dynamic-tool shape while leaving
  `thread/start` unchanged. App-server therefore converts the existing
  per-tool input into explicit functions and namespaces before passing it
  to core.
  
  [#27371](https://github.com/openai/codex/pull/27371) updates
  `thread/start` to use the same explicit shape and removes this temporary
  conversion.
  
  ## Why
  
  Dynamic tools repeat namespace metadata on every function. Core should
  keep one explicit namespace with its member tools so descriptions and
  membership stay consistent across sessions and runtime planning.
  
  ## What changed
  
  - Represent dynamic tools as top-level functions or explicit namespaces
  in protocol and session state.
  - Read old flat rollout metadata and write the canonical hierarchy.
  - Flatten namespace members only when registering callable tools.
  - Keep `thread/start.dynamicTools` flat for now and normalize it at the
  app-server boundary.
  
  New builds can read old rollout metadata. Older builds cannot read newly
  written hierarchical metadata.
  
  ## Test plan
  
  - `just test -p codex-app-server
  thread_start_normalizes_legacy_dynamic_tools_into_model_request`
  - `just test -p codex-protocol
  session_meta_normalizes_legacy_dynamic_tools`
  - `just test -p codex-core
  resume_restores_dynamic_tools_from_rollout_with_sqlite_enabled`
  - `just test -p codex-core
  tool_search_returns_deferred_dynamic_tool_and_routes_follow_up_call`
  - `just test -p codex-core code_mode_can_call_hidden_dynamic_tools`
  - `just test -p codex-tools`

  sayan-oai · 2026-06-15 08:06:14 -07:00
  a292faae5a
• [codex] update multi-agent v2 prompts (#28283)

  ## Summary
  
  - align the default multi-agent v2 root and subagent hints with the
  evaluated prompt guidance for direct collaboration-tool calls, parallel
  delegation, and shared workspaces
  - keep the current `interrupt_agent` tool name and existing
  concurrency-hint placement, with the explicit no-spawn instruction last
  - document the context tradeoff between `fork_turns="none"` and
  `fork_turns="all"` in the v2 `spawn_agent` description
  - extend the focused prompt and tool-surface tests
  
  ## Why
  
  The evaluated multi-agent prompt includes operational guidance that is
  missing from the current Codex defaults. This applies that guidance to
  the current tool surface without restoring stale `close_agent` or
  duplicated concurrency wording.
  
  ## User impact
  
  Multi-agent v2 receives clearer instructions about when and how to
  parallelize work, how agent workspaces interact, and how `fork_turns`
  affects subagent context. The existing default opt-out behavior remains
  in place.
  
  ## Testing
  
  - `just fmt`
  - `just test -p codex-core
  multi_agent_v2_default_usage_hints_use_configured_thread_cap`
  - `just test -p codex-core
  multi_agent_feature_selects_one_agent_tool_family`

  jif · 2026-06-15 12:21:02 +02:00
  127224cacc
• Add selected-plugin precedence and attribution to the MCP catalog (#27884)

  ## Why
  
  **In short:** this PR resolves already-discovered MCP registrations. It
  does not read selected plugins or discover their MCP servers.
  
  The resolved MCP catalog currently builds config and auto-discovered
  plugin registrations before runtime contributors are applied. A
  thread-selected plugin needs a distinct precedence tier in that same
  initial resolution pass: otherwise a disabled lower-precedence winner
  can leave stale name-level state behind, and the winning MCP tools
  cannot be attributed to the selected package reliably.
  
  This PR adds that catalog boundary before executor discovery is
  connected.
  
  ## What changed
  
  - Added an explicit selected-plugin registration tier between
  auto-discovered plugins and explicit config.
  - Collected selected-plugin contributions before the initial catalog
  build, while leaving compatibility and generic extension overlays in
  their existing runtime phase.
  - Retained the winning plugin ID and display name directly on
  plugin-owned catalog registrations.
  - Derived MCP tool provenance from the winning catalog entry instead of
  joining against local-only plugin summaries.
  - Retained the winning selected server's tool approval policy in the
  running connection manager, so a selected registration cannot inherit
  approval behavior from a losing local plugin.
  - Kept remembered approval session-scoped for selected plugins until
  there is an authority-aware persistence contract; Codex will not write
  approval back to an unrelated local plugin.
  - Preserved existing name-level disabled vetoes for discovered plugins
  and config, while keeping a selected package's own disabled registration
  scoped to that registration.
  - Preserved deterministic selection order and existing config,
  compatibility, and extension precedence.
  
  The resulting order is:
  
  ```text
  auto-discovered plugin
    < selected plugin
    < explicit config
    < compatibility registration
    < extension overlay
  ```
  
  ## Behavior and scope
  
  This is a catalog and provenance change only. No production host
  contributes selected-plugin MCP registrations yet, so existing local MCP
  behavior remains unchanged.
  
  The stacked follow-up, #27870, installs the executor plugin provider
  that produces these registrations. App-server activation remains a
  separate final step.
  
  ## Verification
  
  Focused tests cover precedence, deterministic selected-plugin conflicts,
  disabled-veto behavior across catalog phases, managed requirements
  before selected-plugin resolution, winning-server approval policy, and
  attribution when local and selected packages share an ID or server name.
  CI owns execution of the test suite.

  jif · 2026-06-15 11:10:51 +02:00
  c3a479620f
• feat(app-server): filter threads by parent (#26662)

  ## Why
  
  Clients that display or coordinate spawned subagents need an
  authoritative snapshot of a thread's immediate spawned children when
  they connect to app-server or recover after missing live events.
  `thread/list` cannot query by parent, so clients must otherwise scan
  unrelated threads or reconstruct relationships from rollout history and
  transient events.
  
  The direct spawn relationship already exists in persisted
  `thread_spawn_edges` state. Review and Guardian threads do not
  participate in that lifecycle and are intentionally outside this
  filter's scope.
  
  ## What changed
  
  This adds an experimental `parentThreadId` filter to `thread/list`.
  Parent-filtered requests return direct spawned children from persisted
  state while preserving the existing response shape, explicit filters,
  sorting, and timestamp-only cursor behavior. The lookup does not read
  rollout transcripts or recursively return descendants.
  
  Supersedes #25112 with the narrower `thread/list` filter approach.
  
  ## How it works
  
  1. An experimental client passes a valid thread ID as `parentThreadId`.
  2. App-server routes the list through the existing thread-store and
  state-database boundaries.
  3. SQLite selects threads whose IDs have a direct persisted spawn edge
  from that parent.
  4. Omitted provider and source filters include all values; explicit
  filters keep ordinary `thread/list` semantics.
  5. Grandchildren, Review threads, and Guardian threads are excluded.
  
  ## Verification
  
  State (144 tests), rollout (69 tests), and focused app-server
  thread-list (31 tests) suites passed. Scoped Clippy checks and
  repository formatting also passed. Coverage includes direct spawned
  children, omitted grandchildren, pagination, malformed IDs, mixed source
  kinds, explicit filters, and operation without rollout files.

  Brent Traut · 2026-06-14 00:14:26 -07:00
  dfd03ea01b
• [codex] exec-server honors remote environment cwd and shell (#28122)

  ## Why
  
  Next slice needed to make progress on the `remote_env_windows` test is
  to support passing a Windows cwd for the remote environment and using
  that environment's native shell. This lets the test run a real Windows
  process instead of only recording an early path or shell mismatch.
  
  ## What
  
  - change `TurnEnvironmentSelection.cwd` from `AbsolutePathBuf` to
  `PathUri`
  - convert local cwd values to URIs when constructing selections
  - preserve a remote primary cwd instead of replacing it with the local
  legacy fallback
  - prefer the selected environment's discovered shell for unified exec,
  falling back to the session shell when unavailable
  - convert back to a host-native absolute path at current native-only
  consumer boundaries
  - reject or deny unsupported foreign cwd values at the existing
  request-permissions boundary, with TODOs for its future migration
  - extend the hermetic Wine test to execute Windows PowerShell in
  `C:\windows` and verify successful process completion
  - record the current app-server rejection against the same Wine-backed
  remote Windows fixture when its cwd is supplied as a native Windows path

  Adam Perry @ OpenAI · 2026-06-14 06:07:46 +00:00
  efbd00f21f
• build: run buildifier from just fmt (#28125)

  ## Intent
  
  Keep Bazel and Starlark files consistently formatted without requiring
  contributors to install or version buildifier themselves.
  
  ## Implementation
  
  - Add a SHA-256-pinned, cross-platform DotSlash manifest for buildifier
  v8.5.1.
  - Run buildifier from the shared `just fmt` and `just fmt-check` driver,
  with Windows-safe explicit DotSlash invocation.
  - Provision DotSlash in formatting CI and contributor devcontainers, and
  document the source-build prerequisite.
  - Apply the initial mechanical buildifier formatting baseline.

  Adam Perry @ OpenAI · 2026-06-13 21:43:39 -07:00
  740c4f269d
• [codex] Dedupe plugin MCPs by app declaration name (#27607)

  ## Context
  
  This is the next step in the plugin auth-routing stack. The earlier PRs
  make `PluginsManager` auth-aware and move the broad App/MCP surface
  decision into that layer. This PR narrows the ChatGPT/SIWC behavior so
  we only hide a plugin MCP server when it conflicts with an App
  declaration of the same name.
  
  In product terms: if a plugin exposes both an App route and MCP route
  for `foo`, ChatGPT/SIWC sessions should use the App route for `foo`. If
  the same plugin also exposes a separate MCP server like `foo2`, that MCP
  server should remain available.
  
  ```json
  // .app.json
  {
    "apps": {
      "foo": {
        "id": "connector_abc"
      }
    }
  }
  ```
  
  ```json
  // .mcp.json
  {
    "mcpServers": {
      "foo": {
        "url": "https://mcp.foo.com/mcp"
      },
      "foo2": {
        "url": "https://mcp.foo2.com/mcp"
      }
    }
  }
  ```
  
  ## Stack
  
  - PR1: #27652 seed plugin manager auth at construction.
  - PR2: #27459 route plugin surfaces by auth mode.
  - PR3: #27607 dedupe plugin MCP servers by App declaration name.
  - PR4: #27602 preserve plugin Apps in connector listings.
  - PR5: #27461 skip install-time plugin MCP OAuth for matching App
  routes.
  
  ## Summary
  
  - Preserve App declaration names in loaded plugin metadata.
  - Keep public effective App outputs as deduped connector IDs for
  existing callers.
  - For ChatGPT/SIWC, suppress only plugin MCP servers whose names match
  declared App names.
  
  ## Validation
  
  ```bash
  cargo fmt --all
  cargo test -p codex-core-plugins plugin_auth_projection
  cargo test -p codex-core-plugins effective_apps
  cargo test -p codex-core-plugins read_plugin_for_config_installed_git_source_reads_from_cache_without_cloning
  cargo test -p codex-core explicit_plugin_mentions_use_apps_for_chatgpt_dual_surface_plugins
  cargo test -p codex-core explicit_plugin_mentions_keep_non_conflicting_mcp_for_chatgpt_auth
  cargo test -p codex-app-server --test all plugin_install_filters_disallowed_apps_needing_auth
  git diff --check
  ```
  
  ---------
  
  Co-authored-by: Xin Lin <xl@openai.com>

  felixxia-oai · 2026-06-13 17:53:09 -07:00
  51316ead4a
• [codex] Carry exec-server cwd as PathUri (#28032)

  ## Why
  
  This is the second-to-last place in the exec-server protocol that needs
  to migrate to URIs to support cross-OS operation.
  
  ## What
  
  - Change `ExecParams.cwd` to `PathUri`.
  - Keep the cwd URI-shaped through core and rmcp producers, converting it
  to `AbsolutePathBuf` only in `LocalProcess::start_process`.
  - Reject non-native cwd URIs before launch and update the affected
  protocol documentation and call sites.

  Adam Perry @ OpenAI · 2026-06-13 20:56:42 +00:00
  0fed4497f5
• [codex] Send turn state through compact requests (#28002)

  ## Context
  
  Inline compaction is part of the active logical turn. Compact requests
  and the sampling requests around them should use the same turn state,
  including when compaction is the first request to establish it.
  
  ## Change
  
  Pass the turn-scoped `OnceLock` directly to inline v1 compaction so
  `/responses/compact` includes an established value in the existing HTTP
  header. Capture `x-codex-turn-state` from the compact response into that
  same lock, allowing pre-turn compact to establish the value that
  subsequent sampling reuses.
  
  V2 compact already uses the normal Responses HTTP/WebSocket path and
  continues to share the same `OnceLock` without separate plumbing. The
  first returned value wins for the logical turn.
  
  ## Test plan
  
  Integration coverage verifies that:
  
  - pre-turn v1 compact can establish state for the first sampling request
  - inline v1 compact receives established state over HTTP
  - inline v2 compact reuses established state over HTTP
  - inline v2 compact reuses established state over WebSocket
  
  CI validates the full change.

  Ahmed Ibrahim · 2026-06-13 01:27:58 -07:00
  f297b9f07d