## Why
`/diff` is intended to display working-tree changes, but its Git
invocations honored repository-selected executable helpers. A repository
could configure diff/text conversion helpers, clean/process filters,
`core.fsmonitor`, or `post-index-change` hooks that execute when a user
runs `/diff`.
Fixes
[PSEC-4395](https://linear.app/openai/issue/PSEC-4395/codex-cli-diff-executes-repository-selected-diff-helpers).
## What Changed
- Pass `--no-textconv` and `--no-ext-diff` for tracked and untracked
diff generation.
- Discover configured `filter.<driver>.clean` and `.process` entries,
then neutralize the selected drivers through structured
`GIT_CONFIG_KEY_*` / `GIT_CONFIG_VALUE_*` overrides, including driver
names containing `=`.
- Run all `/diff` Git probes with `core.fsmonitor=false` and a null
`core.hooksPath`.
- Use short submodule reporting while ignoring dirty submodule
worktrees, since inspecting a checked-out submodule for dirtiness can
execute filters from that child repository. This intentionally omits
dirty-only submodule markers in order to preserve the non-executing
security boundary.
- Add real-Git marker tests covering filters, fsmonitor, hooks, and
configured helpers inside checked-out submodules.
## How to Test
1. In a repository with ordinary tracked and untracked edits, run
`/diff`.
2. Confirm the normal working-tree diff is shown for top-level files.
3. Run the targeted tests below; they configure executable marker
helpers for repository filters, fsmonitor, hooks, and a checked-out
submodule, then verify `/diff` does not invoke them.
4. Confirm a dirty-only submodule does not cause Codex to enter the
submodule and execute its configured helper.
Targeted tests:
- `just test -p codex-tui get_git_diff_`
Validation note: `just test -p codex-tui` runs the new coverage, but
this worktree currently also has two unrelated failing guardian tests:
`app::tests::update_feature_flags_disabling_guardian_clears_review_policy_and_restores_default`
and
`app::tests::update_feature_flags_disabling_guardian_clears_manual_review_policy_without_history`.
Summary:
- prepend the configured zsh fork executable directory to PATH for zsh-fork shell-command and unified-exec launches
- preserve that PATH value through shell snapshot wrapping so #!/usr/bin/env zsh can resolve to the packaged fork
- keep Unix-only zsh-fork PATH mutation out of Windows clippy-visible mutability
- cover duplicate PATH entries and snapshot preservation in codex-core runtime tests
Test Plan:
- just fmt
- just fix -p codex-core
- cargo test -p codex-core zsh_fork_path_prepend
Notes:
- cargo test -p codex-core currently aborts in unrelated thread_manager::tests::resume_and_fork_do_not_restore_thread_environments_from_rollout with a stack overflow; rerunning that single test reproduces the same stack overflow.
## Summary
- Add `--stdio` as a direct alias for `codex app-server --listen
stdio://`.
- Keep `--stdio` and `--listen` mutually exclusive.
- Update the app-server README to document both forms.
The codex-windows runner group should be much faster than the default
GHA runners. Since bazel jobs on windows are frequently the long pole
for PRs checks, this will hopefully get people landing a bit faster.
Summary:
- prepend the configured zsh fork executable directory to PATH for zsh-fork shell-command and unified-exec launches
- preserve that PATH value through shell snapshot wrapping so #!/usr/bin/env zsh can resolve to the packaged fork
- keep Unix-only zsh-fork PATH mutation out of Windows clippy-visible mutability
- cover duplicate PATH entries and snapshot preservation in codex-core runtime tests
Test Plan:
- just fmt
- just fix -p codex-core
- cargo test -p codex-core zsh_fork_path_prepend
Notes:
- cargo test -p codex-core currently aborts in unrelated thread_manager::tests::resume_and_fork_do_not_restore_thread_environments_from_rollout with a stack overflow; rerunning that single test reproduces the same stack overflow.
Summary:
- prepend the configured zsh fork executable directory to PATH for zsh-fork shell-command and unified-exec launches
- preserve that PATH value through shell snapshot wrapping so #!/usr/bin/env zsh can resolve to the packaged fork
- keep Unix-only zsh-fork PATH mutation out of Windows clippy-visible mutability
- cover duplicate PATH entries and snapshot preservation in codex-core runtime tests
Test Plan:
- just fmt
- just fix -p codex-core
- cargo test -p codex-core zsh_fork_path_prepend
Notes:
- cargo test -p codex-core currently aborts in unrelated thread_manager::tests::resume_and_fork_do_not_restore_thread_environments_from_rollout with a stack overflow; rerunning that single test reproduces the same stack overflow.
## Why
Add a standalone image generation path that can be exercised
independently of hosted Responses image generation, while retaining the
hosted tool as fallback unless the extension is actually available to
the model.
## What changed
- Added the `codex-image-generation-extension` crate with standalone
generate/edit execution, prior-image selection for edits, model-visible
image output, and local generated-image persistence.
- Installed the extension in app-server behind the disabled-by-default
`imagegenext` feature and backend eligibility checks.
- Updated core tool planning so eligible `image_gen.imagegen` exposure
replaces hosted `image_generation`, while unavailable configurations
retain hosted fallback.
- Added coverage for extension behavior, edit history reuse, feature
gating, auth eligibility, and hosted-tool replacement.
- The extension is installed through app-server only in this PR; other
execution paths retain hosted image generation because hosted
replacement occurs only when the standalone executor is actually
registered and model-visible.
- The initial extension contract intentionally fixes the image model to
`gpt-image-2` and uses automatic image parameters.
- Native generated-image history/card parity and rollout persistence
cleanup are intentionally deferred follow-up work.
## Validation
- `just test -p codex-image-generation-extension`
- `just test -p codex-features`
- `just test -p codex-core
hosted_tools_follow_provider_auth_model_and_config_gates`
- `just test -p codex-app-server`
- `just fix -p codex-image-generation-extension -p codex-features -p
codex-core -p codex-app-server`
- `just fmt`
- `just bazel-lock-update`
- `just bazel-lock-check`
---------
Co-authored-by: jif-oai <jif@openai.com>
## Why
#24744 introduced the thread idle lifecycle hook so idle continuation
can be owned by lifecycle contributors instead of hard-coded goal
runtime plumbing. Task completion still called
`goal_runtime_apply(GoalRuntimeEvent::MaybeContinueIfIdle)` directly, so
the post-turn idle transition remained goal-specific and did not notify
generic thread lifecycle contributors.
## What Changed
- Add `Session::emit_thread_idle_lifecycle_if_idle()` to gate idle
emission on both no active turn and no queued trigger-turn mailbox work.
- Call that helper when a task clears the active turn, replacing the
direct `GoalRuntimeEvent::MaybeContinueIfIdle` path.
- Cover the behavior with `codex-core` session tests for emitting after
task completion and suppressing idle emission while trigger-turn mailbox
work is pending.
## Verification
- New tests in `core/src/session/tests.rs` exercise the idle lifecycle
emission and trigger-turn mailbox guard.
This change keeps unified @mentions behind the mentions_v2 gate, moves
the flag to under-development, and polishes mention rendering/history
behavior.
It also adds a few small improvements to the mentions feature around
mention rendering and history round-tripping for plugin/tool mentions in
message edit scenarios. Plugin selections now insert `@` mentions with
better casing, and saved history preserves the visible sigil so recalled
messages look the same as what the user typed.
- Preserves `@` sigils when encoding/decoding mention history for
tool/plugin paths.
- Improves plugin mention insertion so display names/casing are
reflected more cleanly in the composer.
- Update composer to render user-entered plugin mentions in the same
color as the mentions menu. ALso applies to recalled/edited messages.
- Left/right arrows no longer switch unified-mention search modes after
an @mention has already been accepted (Ex: arrowing left through a
composed message that contains @mentions).
- Keeps bound mentions stable around punctuation, so accepted `@`
mentions do not reopen the popup and punctuated `$` mentions still
persist to cross-session history.
**Steps to test**
- Ensure mentions_v2 is enabled through configuration or `--enable
mentions_v2`
- Type `@` in the TUI composer and verify filesystem/plugin/skill
results are displayed in the unified mentions menu.
- Select a plugin mention from the `@` popup and confirm the inserted
text is an `@...` mention with casing, then recall/edit the message and
confirm it still renders as `@...`.
- Mention a skill and verify that skills still insert as `$skill`
mentions rather than `@` mentions.
- Verify punctuated mentions such as `@plugin.` and `($skill)` keep
their bound mention behavior across editing and history recall.
## Summary
Amazon Bedrock should expose GPT-5.5 alongside GPT-5.4, and the Bedrock
GPT entries should stay aligned with the canonical bundled OpenAI model
metadata instead of carrying a separate hand-written copy that can drift
over time. This change will be merged when the model is online.
This change:
- Adds the Bedrock Mantle model id for `openai.gpt-5.5`.
- Builds the Bedrock GPT-5.5 and GPT-5.4 catalog entries from the
bundled OpenAI model catalog, then overrides the Bedrock-facing slug,
explicit priority, and Bedrock-specific context windows.
- Hardcodes both `context_window` and `max_context_window` to `272000`
for Bedrock GPT-5.5 and GPT-5.4.
- Keeps `openai.gpt-5.5` as the default Bedrock model ahead of
`openai.gpt-5.4` and the Bedrock OSS models.
Summary:
- prepend the configured zsh fork executable directory to PATH for zsh-fork shell-command and unified-exec launches
- preserve that PATH value through shell snapshot wrapping so #!/usr/bin/env zsh can resolve to the packaged fork
- keep Unix-only zsh-fork PATH mutation out of Windows clippy-visible mutability
- cover duplicate PATH entries and snapshot preservation in codex-core runtime tests
Test Plan:
- just fmt
- just fix -p codex-core
- cargo test -p codex-core zsh_fork_path_prepend
Notes:
- cargo test -p codex-core currently aborts in unrelated thread_manager::tests::resume_and_fork_do_not_restore_thread_environments_from_rollout with a stack overflow; rerunning that single test reproduces the same stack overflow.
Summary:
- prepend the configured zsh fork executable directory to PATH for zsh-fork shell-command and unified-exec launches
- preserve that PATH value through shell snapshot wrapping so #!/usr/bin/env zsh can resolve to the packaged fork
- keep Unix-only zsh-fork PATH mutation out of Windows clippy-visible mutability
- cover duplicate PATH entries and snapshot preservation in codex-core runtime tests
Test Plan:
- just fmt
- just fix -p codex-core
- cargo test -p codex-core zsh_fork_path_prepend
Notes:
- cargo test -p codex-core currently aborts in unrelated thread_manager::tests::resume_and_fork_do_not_restore_thread_environments_from_rollout with a stack overflow; rerunning that single test reproduces the same stack overflow.
Expose denied-read entries from the active permission profile to model-visible context and automatic approval review prompts so escalation decisions can account for policy-restricted paths.
## Why
PR #24813 added extension `TurnItemEmitter` coverage and introduced a
test that records a conversation history item before asserting
extension-emitted turn item events.
`record_conversation_items()` also emits a `RawResponseItem` event to
observers. The test was reading from the same event receiver and
expected the next event to be `ItemStarted`, so the test failed reliably
once the setup history item was present.
## What Changed
Update
`passes_turn_fields_and_scoped_turn_item_emitter_to_extension_call` to
consume and assert the expected setup `RawResponseItem` before checking
the extension `ItemStarted`, `WebSearchBegin`, `ItemCompleted`, and
`WebSearchEnd` events.
This is test-only and does not change extension runtime behavior.
## Verification
- `cargo nextest run --no-fail-fast -p codex-core
tools::handlers::extension_tools::tests::passes_turn_fields_and_scoped_turn_item_emitter_to_extension_call`
## Summary
- Let `close_agent` clean up an agent that is still registered in
`AgentRegistry` even when its underlying thread is already missing.
- Preserve the explicit-close boundary: for known stale thread-spawn
agents, mark the persisted spawn edge `Closed`, then treat
`ThreadNotFound` / `InternalAgentDied` as a successful close so the
registry slot can be released.
- Add a regression for MultiAgentV2 task-name targets where
`close_agent("worker")` succeeds after the worker thread has already
disappeared.
## Motivation
A worker can disappear from `ThreadManager` while its metadata still
exists in the root `AgentRegistry`. Before this change, the close tool
failed while trying to subscribe to the missing thread status, so it
never reached the cleanup path that releases the registered agent slot.
With `agents.max_threads = 1`, an explicit close of that stale task-name
agent could fail and leave the session unable to spawn a replacement.
## Scope
This PR intentionally does not add automatic stale-agent reaping to
`spawn_agent`, `resume_agent`, or `list_agents`. A thread being missing
from `ThreadManager` is not the same as an explicit close: persisted
open spawn edges are still the durable source of truth for resume and
task-name ownership until `close_agent` is called.
## Validation
- `just test -p codex-core -E
'test(multi_agent_v2_close_agent_reaps_stale_task_name_target) |
test(resume_agent_from_rollout_reopens_open_descendants_after_manager_shutdown)'`
- `just fix -p codex-core`
Summary:
- prepend the configured zsh fork executable directory to PATH for zsh-fork shell-command and unified-exec launches
- preserve that PATH value through shell snapshot wrapping so #!/usr/bin/env zsh can resolve to the packaged fork
- keep Unix-only zsh-fork PATH mutation out of Windows clippy-visible mutability
- cover duplicate PATH entries and snapshot preservation in codex-core runtime tests
Test Plan:
- just fmt
- just fix -p codex-core
- cargo test -p codex-core zsh_fork_path_prepend
Notes:
- cargo test -p codex-core currently aborts in unrelated thread_manager::tests::resume_and_fork_do_not_restore_thread_environments_from_rollout with a stack overflow; rerunning that single test reproduces the same stack overflow.
Expose denied-read entries from the active permission profile to model-visible context and automatic approval review prompts so escalation decisions can account for policy-restricted paths.
## Summary
The client currently calls `thread/resume` to establish live updates and
immediately follows it with `thread/turns/list` to hydrate recent turns.
This lets `thread/resume` return that page directly, eliminating a round
trip and the ordering/deduplication gap between the two calls.
Experimental clients opt in with `initialTurnsPage: { limit,
sortDirection, itemsView }`. The response returns `initialTurnsPage` as
a `TurnsPage`, including cursors for paging further back in history.
Keeping the controls in a nested opt-in object provides the useful
`thread/turns/list` knobs without spreading page-specific parameters
across `thread/resume`.
## Verification
- `just fmt`
- `just write-app-server-schema --experimental`
- `just write-app-server-schema`
- `cargo test -p codex-app-server-protocol`
- `cargo test -p codex-app-server
thread_resume_initial_turns_page_matches_requested_turns_list_page
--tests`
- `cargo test -p codex-app-server
thread_resume_rejoins_running_thread_even_with_override_mismatch
--tests`
- `just fix -p codex-app-server-protocol -p codex-app-server`
## Why
Extension-contributed tools need to emit visible turn items through
Codex's normal event and persistence pipeline.
## What
- Add `TurnItemEmitter` to extension `ToolCall`s and route the core
implementation through `Session::emit_turn_item_*`.
- Hold weak session and turn references so retained tool calls cannot
keep host state alive.
- Provide a no-op emitter for extension test callers.
## Test Plan
- `just test -p codex-core -E
'test(passes_turn_fields_and_scoped_turn_item_emitter_to_extension_call)'`
---------
Co-authored-by: jif-oai <jif@openai.com>
It seems that this was added to allow rustc to load proc macros that had
been compiled with UBSan enabled, which zig does for debug and
`ReleaseSafe` builds. When zig drives the link of the final binary it
knows to include the ubsan runtime, but our zig-built artifacts are
being linked into a binary whose linking rustc drives. This removes the
libubsan workaround we have and replaces it with
`-fno-sanitize=undefined` passed to zig.
The new argument is passed at the end of zig's args so should take
precedence over any earlier arguments from the script's caller.
## Why
Goal tools create and update goal state for a persistent thread. The
extension was only checking whether goals were enabled before
advertising those tools, which meant they could be surfaced in contexts
that should not receive thread goal controls: ephemeral threads without
persistent thread state and review subagents.
Those sessions can still run the goal extension lifecycle, but the
thread tools should only be visible when the current thread can safely
use them.
## What changed
- Adds a `GoalRuntimeConfig` that separates goal enablement from whether
goal tools are available for the current thread.
- Computes tool eligibility on thread start from
`persistent_thread_state_available` and `SessionSource`, hiding tools
for review subagents.
- Uses `GoalRuntimeHandle::tools_visible()` when contributing thread
tools so enabled runtime state does not automatically imply tool
exposure.
- Adds backend coverage for hiding goal tools on ephemeral threads and
review subagents.
## Testing
- Added `goal_tools_hidden_for_ephemeral_threads`.
- Added `goal_tools_hidden_for_review_subagents`.
## Summary
- Add a new `app-server-start-bench` crate to measure app-server startup
performance
- Wire the benchmark into the workspace and Bazel build so it can be run
consistently
- Update lockfiles and repo automation to account for the new package
## Summary
- update the bundled `openai-docs` system skill to match the latest
`openai-docs-plus` content from `skills-internal`
- add the cached Codex manual fetch helper and expand the skill routing
for Codex self-knowledge
- keep the stable local skill identity and labels as `openai-docs`
## Why
The built-in OpenAI Docs skill needed to reflect the current upstream
guidance from `skills-internal` while preserving the local system-skill
name used by Codex.
## Impact
Codex now ships the newer OpenAI Docs skill behavior for Codex
self-knowledge and manual-first documentation lookups.
## Validation
- `just test -p codex-skills`
- exact directory diff against transformed `skills-internal`
`origin/main` was clean
Summary
- Add TurnErrorInput and TurnLifecycleContributor::on_turn_error to the
extension API.
- Emit the turn-error lifecycle from core turn error paths, including
usage limit failures.
- Add direct lifecycle coverage for the emitted error facts and stores.
Tests
- just fmt
- git diff --check
- Not run: full tests or clippy (per instructions)
Summary: add session source and persistent-state availability to
ThreadStartInput; populate them from session init; update existing goal
test harness constructors. Tests: just fmt; git diff --check. No full
tests or clippy run per request.
## Summary
- refresh managed ChatGPT auth during auth resolution when its access
token is inside ChatGPT web's five-minute near-expiry window
- cover refresh-window decisions while preserving the existing
expired-token refresh path
## Why
Codex already resolves managed ChatGPT auth before outbound requests and
refreshes expired access tokens there. This change adjusts the existing
predicate to refresh a still-valid access token once it is within the
same five-minute refresh window used by ChatGPT web, avoiding a request
with a token about to expire.
A cross-process serialization follow-up was explored in #24663 and
closed for now; we do not currently suspect cross-process refresh races
are a root cause of the refresh errors under investigation.
External-token, API-key, and Agent Identity auth modes remain unchanged.
## Validation
- `bazel test //codex-rs/login:login-all-test`
- `just fmt` runs Rust formatting successfully, then its Python SDK Ruff
step cannot install `openai-codex-cli-bin==0.131.0a4` on this Linux
environment because no compatible wheel is published.
## Why
Guardian reviews already emit analytics events, but we do not expose
aggregate OpenTelemetry metrics for review volume, latency, token usage,
or terminal outcomes. That makes it harder to monitor Guardian behavior
during rollouts and to compare review outcomes by source, action type,
session kind, model, and failure mode.
## What Changed
- Added Guardian review metric names for count, total duration, time to
first token, and token usage in `codex-rs/otel`.
- Added `core/src/guardian/metrics.rs` to convert
`GuardianReviewAnalyticsResult` into sanitized metric tags covering
decision, terminal status, failure reason, approval request source,
reviewed action, session kind, risk/outcome, model, reasoning effort,
and context/truncation state.
- Emitted the new metrics from `track_guardian_review` for each terminal
Guardian review result.
## Testing
- Added
`guardian_review_metrics_record_counts_durations_and_token_usage`, which
verifies the emitted count, duration, TTFT, token usage histograms, and
tag set through the in-memory metrics exporter.
## Why
Dedicated memories tools are exposed through a Responses API namespace
tool. The namespace itself has to be a valid tool identifier, so
`memories/` can fail validation before the model ever gets a chance to
call the memory tools.
## What changed
- Changed `MEMORY_TOOLS_NAMESPACE` from `memories/` to `memories`.
- Added `memory_tool_namespace_matches_responses_api_identifier` so the
namespace stays non-empty and limited to Responses-safe identifier
characters.
## Verification
- Added unit coverage for the namespace identifier shape in
`codex-rs/ext/memories/src/tests.rs`.
## Summary
- Add the required `/*parent_thread_id*/` argument comment at the
Guardian review session test callsite flagged by CI.
## Validation
- `just fmt`
- Not run: clippy/tests, per request; CI will cover them.
## Why
Guardian review sessions are reusable across forks when their
`GuardianReviewSessionReuseKey` is unchanged, but the underlying
Responses request was still using the child thread ID as
`prompt_cache_key`. That meant forked Guardian reviews that should share
cache context produced different cache keys, reducing prompt cache reuse
and weakening the reuse invariant.
## What Changed
- Adds a `ModelClient` prompt cache key override and uses it for
`ResponsesApiRequest.prompt_cache_key`.
- Computes Guardian review cache keys as
`guardian:<sha1(parent_thread_id:reuse_key)>`, scoped to the parent
thread plus the reuse-sensitive Guardian config.
- Wires session construction to apply that override only for Guardian
sub-agent sessions.
## Testing
- Added coverage that Guardian cache keys are stable for the same
parent/reuse key, change when either the parent thread or reuse key
changes, fit within the Responses API length limit, and are absent for
non-Guardian sessions.
- Extended the parallel review test to assert forked Guardian reviews
send the same `prompt_cache_key`.
Michael Bolin