## What changed
- Render completed `mermaid` fences with `codex-mermaid`, using syntax-theme colors for nodes and edges.
- Keep source visible for unclosed, invalid, unsupported, or oversized diagrams, and preserve the original Mermaid for copying and raw mode.
- Keep streamed diagrams mutable until the next top-level block so closing fences and terminal resizing can update their display. Preserve scrollback progress across width and render-mode changes.
## Testing
Add renderer and streaming tests covering supported diagram families, nested fences, Unicode, theme colors, source fallbacks, resizing, raw-mode transitions, and original-source preservation. Verify that node connection ports retain node styling in all four flowchart directions.
GitOrigin-RevId: 9a759248110e6730d629d653061ff7e2ec5dc2c0
## What changed
Add `codex tcp-tunnel` and the `codex-tcp-tunnel` crate to forward loopback TCP connections to an explicit target through a TLS-verified HTTP/3 CONNECT proxy.
- Require the proxy origin to match an approved HTTPS origin in a supplied policy file.
- Read bearer tokens and optional bounded, non-forwarding `x-` headers from stdin. Support token updates for new connections, `LISTENING` and `AUTH_UPDATED` notifications, and shutdown when the control pipe closes in token-update mode.
- Preserve the listener across proxy reconnects without replaying TCP streams, and let accepted streams continue while a proxy drains.
## Testing
Add tests for hidden CLI parsing, proxy and target validation, credential renewal, control-pipe closure, and invalid input without secret disclosure. A local HTTP/3 proxy test covers token replacement, transport recovery without stream replay, and graceful draining.
GitOrigin-RevId: c6af3025301c61e9fe90940cf5a6df0039465e69
## What changed
Add `codex-mermaid`, a standalone crate that renders supported subsets of flowchart, sequence, state, class, and ER diagrams as Unicode text. Expose `render` for plain text and `render_spans` for semantic node, edge, and text spans that callers can style.
Enforce source, diagram, canvas, and display-width limits. Return errors for unsupported input or exceeded limits without producing partial diagrams, leaving source fallback to callers. Include documentation and a stdin rendering example.
## Testing
Add snapshots for each diagram family, checks for relationship endpoints, Unicode labels, semantic spans, truncated input, and size limits, plus edge reconstruction for all 512 directed three-node graphs in all four layout directions.
GitOrigin-RevId: 5b4e65d9152abce5d833e4e6b12113a5a21f700e
## What changed
- Remove `AgentSpawner` and `AgentSpawnFuture` from the extension API, along with the Guardian wrapper, thread lifecycle context, and app-server injection plumbing.
- Define `InternalSessionSpawnFuture` directly as a boxed future instead of aliasing `AgentSpawnFuture`.
- Raise the workspace `rustls` minimum version to `0.23.45`.
GitOrigin-RevId: b7319dee41bfb869479afeb7555a6f050c4d00a5
## Why
Stdio shutdown can hang on open pipes or blocked I/O, and Unix `SIGTERM` needs to run connection cleanup so owned commands terminate and session-end hooks execute.
## What changed
- Handle `SIGTERM` on a dedicated signal thread and close the stdio connection through the existing cleanup path.
- Move blocking stdin and stdout operations to dedicated threads so they do not hold the Tokio runtime open. Cancel message forwarding on `SIGTERM` to release blocked producers.
- When shutdown signal handling is enabled on Unix, start a shared 45-second watchdog on EOF or `SIGTERM`. Preserve the first deadline and exit with status `1` if cleanup or runtime teardown stalls, even when logging is blocked.
## Testing
Add Unix integration coverage for shutdown with open pipes, blocked stdout, blocked stderr, and a stalled filesystem write. Verify command and child-process termination, preserve the EOF deadline when `SIGTERM` follows, and extend session-end hook coverage to `SIGTERM`.
GitOrigin-RevId: 43a80b8277eb50519cdc293eb3b5dc2cad00b3aa
## What changed
Move assessment parsing and schema, model selection, review outcomes, retry handling, and rejection circuit breakers into `codex-guardian-reviewer`. Update core to use the extracted APIs while retaining session execution and decision enforcement in the host.
## Testing
Move existing assessment, circuit breaker, and retry tests into the new crate, including coverage for transient errors, cancellation, and deadlines.
GitOrigin-RevId: 96ec9989a0066acb012bf3bec0b9f7d8bf11a4ef
## What changed
- Discover configured provider credentials in child environment values even when canonical credential variables are absent. Match complete tokens while preserving regex word boundaries and avoiding ambiguous or overlapping provider matches.
- Replace and restore credentials by their original spans, preserving adjacent tokens and generated dummy aliases across destination rebinding. Reject dummy values that embed another provider's credentials.
- Extend text virtualization and provider source checks to configured credentials, including short credentials with distinctive prefixes, while preserving operational paths.
- Expose trusted provider metadata and active bindings through `CredentialBrokerEnvironment`, and remove marked configured credential variables when stripping the managed proxy environment.
## Testing
Add regression tests for alias discovery, regex boundaries and alternatives, overlapping and adjacent credentials, destination rebinding, dummy restoration, disallowed credential sources, and operational path preservation.
GitOrigin-RevId: dd85c595ce9550fbfdb07ef296a23e458ca165dd
## What changed
- Add `credential_providers` configuration for environment variables, credential patterns, static or environment-derived URL prefixes, and bearer, token, Basic, or custom header authentication.
- Generate matching dummy credentials and restrict replacement to authorized schemes, hosts, ports, and path prefixes. Scope credentials and destination history to each environment.
- Preserve real credentials for destinations that bypass the proxy with `allow_local_binding`, while providing snapshot redaction and alias matching.
- Validate provider definitions and preserve unchanged providers across configuration reloads.
## Testing
Add coverage for dummy generation, authentication translation, URL restrictions, environment isolation, configuration reloads, and credential restoration for local proxy bypass.
GitOrigin-RevId: 5d60ecc684cf4e9aa7637af33af12179aa0c672a
## Why
An installer can retarget the selected executable symlink or junction while an app server is running. Recording the launch-time identity preserves which binary was started after that path changes.
## What changed
- Resolve the executable path before launching on all platforms and store an optional executable identity in app-server PID records. Continue accepting older records without this field and expose the identity only for an active process.
- Use BLAKE3 for executable identity digests and make `ExecutableIdentity` serializable.
- Schedule updater checks with an explicit deadline in `tokio::select!`, preserving persisted update intervals, settings-error retries, and termination handling.
## Testing
Add a Unix test that verifies the recorded identity matches the resolved launch binary, differs from a retargeted symlink's binary, and remains optional when reading legacy PID records.
GitOrigin-RevId: 4821130b9a5e75b417a8e39c583b30427a872ff8
## What changed
- Introduce `codex-user-verification` with a provider interface for credential status, creation, deletion, and challenge signing. Include typed errors, shared cancellation guards, and hashed account-user key namespaces.
- Add P-256 public-key encoding as unpadded base64url SPKI DER, derive credential IDs from its SHA-256 digest, and redact proof fields in debug output.
- Add app-server helpers to validate challenge and display-text bounds and map provider errors to typed RPC errors without exposing provider diagnostics.
The platform implementation reports verification as unsupported. App-server requests still return typed unavailability, with the message updated to mention build or account availability.
## Testing
Add tests for credential encoding and signature verification, invalid curve points, cancellation across guard clones, stable and distinct account namespaces, and invalid challenge or display values. Update the app-server unavailability test for the revised message.
GitOrigin-RevId: fe4a4eb37c68d7fdc547704e76aa257abf3e9c81
## What changed
Remove the `codex mcp-server` subcommand and the standalone `codex-mcp-server` crate, including its tests, interface documentation, build dependencies, and run recipe.
## Testing
Update the strict configuration test to use `codex exec hello`, preserving coverage for rejecting unknown configuration overrides.
GitOrigin-RevId: 8688b1f41862d7c2073ea2812a257c0087c55d9c
## What changed
- Configure the CLI and app server to use `tikv-jemallocator` on
`x86_64-unknown-linux-musl` and `aarch64-unknown-linux-musl`.
- Keep the dependency and global allocator selection scoped to those targets.
GitOrigin-RevId: 93c54c90d9acb7e48edffd032cd8ec685a782210
## What changed
- Add `codex-mxc-sandbox` with native MXC availability detection and a launcher that inherits standard I/O and waits for the sandboxed process.
- Reject unsupported learning-mode and fallback policies, and verify deny-path support before launch.
- Route the existing Windows MXC availability metric through the new crate and move its Windows linking dependencies alongside the adapter.
GitOrigin-RevId: e2a220b85718e00b0e710c30bbe66b6c56958176
## What changed
- Add the experimental `worktrees` feature and a shared `--worktree` flag for new and forked `codex exec` sessions.
- Create each enabled session in a managed Git worktree, use that checkout as the session working directory, and bind the checkout to the new thread.
- Share the configured worktree pool with Desktop while leaving automatic cleanup disabled for CLI allocations.
- Reject unsupported commands, remote execution, ignored user configuration, ephemeral sessions, and use without the feature enabled before allocating a worktree.
## Testing
- Cover flag placement and inheritance, supported and rejected command combinations, worktree allocation and thread ownership, configuration gating, and compatibility with existing worktree-backed sessions.
GitOrigin-RevId: 011ff4639b09e8992c50d7b823df23e71798670e
## What changed
- Add the `codex-attachment-store` crate with storage-neutral attachment metadata, references, errors, and an asynchronous persistence interface.
- Provide an inline implementation that preserves attachment bytes as media-typed base64 data URLs.
- Inject the store into `ThreadManager`, expose it to consumers, and retain inline storage as the default for existing entry points.
## Testing
- Verify inline storage round-trips binary, text, PNG, and JPEG data.
- Verify attachment debug output redacts URLs while retaining file IDs.
GitOrigin-RevId: 7688dcd3c89d7540ed2398f3e7c63881fbfcda97
## What changed
- Upgrade `rmcp` and `rmcp-macros` from 3.1.3 to 3.2.0.
- Refresh the Cargo and Bazel lockfiles for the new versions.
GitOrigin-RevId: a1d7696eafe6a150c6e09c3cc9c3663a8fd68679
## What changed
- Add the `codex-windows-sandbox-service` workspace crate and Windows-only build target.
- Integrate `CodexSandboxService` with the Windows Service Control Manager, including start, stop, shutdown, status reporting, and event-log handling.
- Support service mode by default and a debug-only `--foreground` mode. Keep provisioning IPC disabled until authenticated request handling is available.
## Testing
- Add argument-parsing tests for service, foreground, unknown, and multiple arguments.
GitOrigin-RevId: 1c84f0a593b65e5cf97ab7606cde03675542b0b0
## Why
Clients need the executor's release version to make version-based compatibility decisions.
## What changed
- Add `executorVersion` to `EnvironmentInfo` and return it from both `initialize` and `environment/info`.
- Resolve the package release version at process startup so the advertised value remains stable for the server's lifetime.
- Use `0.0.0` when the version is unknown or omitted by a legacy executor.
## Testing
- Cover packaged and source-build initialization, startup caching, protocol serialization, and client-side metadata caching.
GitOrigin-RevId: a0c7f0b701a8e7e50345cd5fb1b5c5d2d38ff3b1
## Why
Git root discovery is optional metadata work, but filesystem probes can block. They should not exhaust Tokio's blocking pool, delay runtime shutdown, or prevent later turns from observing repository changes.
## What changed
- Add a shared `GitRootDiscovery` service that coalesces concurrent lookups for the same working directory and limits probes across directories.
- Run probes on detached threads, retain in-flight work across caller cancellation, and discard completed results instead of caching them.
- Use the service for turn and memory metadata enrichment, abort unused turn enrichment when its state is dropped, and limit memory metadata waits to one second.
## Testing
Add coverage for probe sharing, capacity limits, cancellation, fresh discovery, runtime shutdown, memory timeouts, and repositories restored after startup prewarming.
GitOrigin-RevId: bca46fc263e7a12a2f69146d8a0b3e7c7e0846cb
## What changed
- Add `codex-otel-trace-websocket` with a `TraceWebSocket` API that owns the
loopback OTLP receiver and WebSocket listener.
- Bind both listeners during startup, expose the exporter and bound listener
addresses, and surface listener failures through a single lifecycle method.
- Update `codex-code-mode-host` to use the new crate and shut down the bridge
after flushing its trace provider.
GitOrigin-RevId: ec5ca4c4369b6b3b1232875c2699730eb748ab1c
## What changed
- Probe whether the native Windows MXC process security environment is usable
when selecting a sandbox.
- Emit `codex.windows_mxc.available` at most once per process, labeled with the
probe result.
- Add the MXC workspace dependencies for Cargo and Bazel, and pin
`tracelogging` to a version compatible with the GNU Windows toolchain.
GitOrigin-RevId: d7cfeed6f0333feda5764e1ee44fe5bbd50f9a58
## What changed
- Add the `codex-config-schema` workspace and Bazel crate for the
`codex-write-config-schema` binary.
- Preserve `codex-rs/core/config.schema.json` as the default output location.
- Update `just write-config-schema` to run the new crate and remove the schema
generator's `clap` dependency and binary target from `codex-core`.
GitOrigin-RevId: 7447f97d6e44d1077b16d2d850f8a8add9117ea6
## What changed
- Add `codex-realtime-webrtc` with a length-prefixed, 256-byte JSON control protocol for `hello`, `ready`, `close`, and `closed` messages.
- Add a hardened `codex-voice-host` binary that validates protocol and build compatibility, handles orderly shutdown and parent pipe loss, and exposes its build commit.
- Keep this initial foundation limited to process lifecycle management; it does not open audio devices, load native plugins, negotiate WebRTC, or enable voice in the TUI.
## Testing
- Exercise the helper as a subprocess, covering handshake, explicit close, parent pipe loss, malformed frames, incompatible builds, and invalid message order.
GitOrigin-RevId: 6d8d7dd7ba5c4886879882d79314d235f6ab7cf4
## Why
Context compaction can replace original conversation items that Guardian still needs to review approval-sensitive actions.
## What changed
- Retain a bounded, chronological review history independently of the model's compacted history.
- Keep separate limits for user messages and other transcript items so tool traffic cannot evict user instructions.
- Use the retained evidence for synchronous and asynchronous Guardian transcripts, while resetting it after rollback or history reconstruction.
## Testing
- Cover retention through compaction and eviction, reset behavior after rollback, independent size limits, and asynchronous transcript construction.
GitOrigin-RevId: c5851e992820504fc18de8cfec7f6f9f1b69f316
## What changed
- Add the `codex-guardian-context` crate for assembling structured context shared by synchronous Guardian review and asynchronous scoring.
- Preserve transcript entry roles and original byte counts, and let section contributors declare shared or consumer-specific scope.
- Collect applicable sections in registration order, skip optional sections, and fail the collection when required evidence is missing.
- Provide UTF-8-safe prefix/suffix truncation with approximate omitted-token accounting.
## Testing
- Cover scoped registry collection, ordering, optional sections, required-evidence failures, truncation markers, and UTF-8 boundaries.
GitOrigin-RevId: 19d8458403c470c9b413992dbff925a12259c3c5
## Why
Git remote URLs can embed usernames, passwords, or tokens. Codex carries these
URLs through turn metadata and persisted thread metadata, so credentials must be
removed before a remote enters those paths.
## What changed
- Add `SanitizedGitUrl`, which parses Git URL and SCP-style remotes, strips
authentication data, and preserves the conventional `git` SSH user.
- Use sanitized remotes when collecting Git metadata, enriching model requests,
discovering cloud environments, updating thread metadata, and reading legacy
rollouts. Reject or omit malformed remotes instead of retaining their raw
contents.
- Keep API, schema, and TypeScript representations as strings while enforcing
sanitization in Rust.
## Testing
- Cover URL schemes, SCP and IPv6 forms, remote helpers, encoded paths,
malformed values, and legacy deserialization.
- Verify credentials do not appear in model requests, API responses, SQLite, or
rollout files.
GitOrigin-RevId: 6435efc4c45bfbfad4723ce7a0457cb00175f25c
## What changed
- Add the `codex-worktree` crate for resolving managed worktree settings from
the existing `[desktop]` configuration.
- Default the worktree root to `$CODEX_HOME/worktrees`, automatic cleanup to
enabled, and retained worktrees to 15.
- Validate configured roots, cleanup flags, and retention counts before
exposing the effective settings.
## Testing
- Cover defaults, configured values, and invalid root and retention settings.
GitOrigin-RevId: 1b279c62ef41e3c8eb540ce9beaf0f6cd96d903f
## What changed
- Add `codex-agent-roles` for agent role configuration types, parsing,
discovery, validation, and layered loading.
- Update `codex-core` to consume the new crate's public role configuration and
parsing APIs.
GitOrigin-RevId: 5a963a219a581b2848dae6fd071aa31a0b5ff22c
## Why
App-server logs can be persisted or included in submitted diagnostics, so credentials used by model providers, authentication refreshes, and attestation requests must not appear in diagnostic output.
## What changed
- Add `RedactedString`, which preserves serialization and string access while replacing debug output with `<redacted>`.
- Use it for model-provider bearer tokens, header and query values, authentication command arguments, and attestation tokens.
- Avoid logging JSON-RPC error payloads and parser or authentication errors that may echo credentials; retain safe context such as error codes and categories.
## Testing
- Add an app-server regression test that exercises provider credentials, refreshed authentication tokens, and attestation tokens, then verifies none appear in persisted SQLite or submitted diagnostic logs.
GitOrigin-RevId: 8c50408adf94d93847658b1320682cf3b637d2cc
## Why
Token-budget sessions need a way to recover prior conversation context and preserve working state across context-window transitions.
## What changed
- Add direct-model `history` tools for listing windows and items, reading items, and searching conversation contents.
- Add direct-model `notes` tools for listing, reading, searching, appending, and writing persistent notes.
- Route tool calls through the configured Codex backend with trusted session and agent context, bounded request arguments, and truncation-aware output handling.
- Expose the extension when `features.token_budget.use_history_notes_history` is enabled with an OpenAI provider and Codex backend authentication.
## Testing
- Cover tool registration, configuration changes, provider and authentication requirements, backend request context, encrypted output preservation, and request and response limits.
GitOrigin-RevId: 43b259f01014ba3f30803dd7cd5634942407a9bb
## What changed
- Upgrade `rmcp` and `rmcp-macros` from 3.1.2 to 3.1.3.
- Preserve authentication-required and retryable transport classifications when modern MCP discovery falls back to legacy initialization.
- Prevent unrelated discovery errors from triggering legacy fallback while retaining their diagnostics.
## Testing
- Cover authentication challenges and transient initialization failures during legacy fallback.
- Verify that a failed OAuth issuer check does not consume the pending authorization state.
GitOrigin-RevId: 957c0873fec1148883dd163fbaeb77d7593d8c53
## What changed
- Move the Guardian thread lifecycle contributor and subagent-spawn context into `codex-guardian-v2`.
- Install the lifecycle contributor and asynchronous risk scorer through a single extension entry point.
- Remove the redundant `codex-guardian` crate and group the existing scorer implementation under `async_scorer`.
GitOrigin-RevId: 97141190c843e588b8c09c9ccd3fe00e1fae39a4
## What changed
- Add a Tree-sitter-based lowerer that converts a conservative subset of literal PowerShell commands into argument vectors.
- Reject dynamic expressions, parse recovery, unsupported value conversions, directives, and source outside recognized command nodes instead of guessing their meaning.
- Keep the lowerer alongside the existing production parser for later adoption.
## Testing
- Add fixture-driven coverage for supported literal commands and unsupported or ambiguous syntax, including a dedicated `#requires` rejection test.
GitOrigin-RevId: a6e7acc264ca40df264db4b271e38ae7d89e1ec4
## What changed
- Upgrade `rmcp` from 3.0.0 to 3.1.2.
- Use `rmcp`'s native JSON-RPC decoding and remove the local compatibility layer for multi-round-trip tool results.
- Preserve response metadata on `input_required` SSE results.
- Support OAuth protected-resource metadata discovery and include the discovered resource audience when refreshing tokens.
## Testing
- Add coverage for metadata preservation on modern SSE `input_required` responses.
- Add an OAuth startup scenario that discovers protected-resource metadata and verifies the refresh-token resource audience.
GitOrigin-RevId: 689f009b4a33552b640304111b74585b4009eeb8
## What changed
Remove the unused `codex-cli` dev-dependency and the no-op import that kept it
visible to `cargo-shear`. TUI tests continue to locate spawned binaries through
`codex-utils-cargo-bin`.
GitOrigin-RevId: ba5855590c6f0300845170f15f39d77c0611a60a
## Why
Terminal probes and other bootstrap work can leave keys or partial control
sequences buffered before an interactive startup screen is visible. Those
inputs must not accidentally select or confirm an action, while typeahead
intended for the composer should survive terminal initialization.
## What changed
- Replay user input consumed by Unix startup probes through Crossterm while
filtering completed terminal color replies, and avoid consuming the Windows
console input queue when detecting default colors.
- Drain decoded and unread input after rendering actionable startup screens,
including onboarding trust, migration, update, provider, resume, and hooks
prompts. Keep incomplete control sequences quarantined and fail closed when
an input boundary cannot be resolved.
- Restore terminal modes if initialization exits early and bound terminal probe
reads by time and byte limits.
## Testing
Add parser, boundary, onboarding, and PTY coverage for preserved typeahead,
split escape sequences, bracketed paste, delayed input, and fresh input after
an interactive screen becomes ready.
GitOrigin-RevId: 321198996cdd88fe9b43c4a762e750bff450482c
## What changed
- Add `codex-guardian-v2` to the app server's dependencies.
- Install its feature-gated thread, approval-review, and tool lifecycle contributors with access to authentication and thread management.
GitOrigin-RevId: 25672032ccb541138c8c87c9f27f2a7423b2eee0
## Why
Streaming reads previously rejected requests that used a platform filesystem
sandbox.
## What changed
- Open streamed files in the sandbox helper and return the open file to the
exec-server by passing a file descriptor on Unix or duplicating a file handle
on Windows.
- Advertise support through the `sandboxedFileStreaming` environment capability.
- Preserve close-on-exec behavior for transferred descriptors, including the
required inherited-descriptor cleanup on macOS.
## Testing
- Cover bounded sandboxed streams, continued reads after path replacement, and
rejection of symlink escapes outside readable roots.
GitOrigin-RevId: 677b2444b74e834b78b87a8554bc119c1c6e08b2
## What changed
- Add the `codex-guardian-v2` crate with an extension install entry point that does not register contributors yet.
- Register the crate in the Cargo workspace and add its Bazel target.
GitOrigin-RevId: 7c0c9479c6722d65f0f0dad9b0fd4a756e4649b3
## What changed
- Select workload identity authentication from `OPENAI_FEDERATION_RULE_ID` and
`OPENAI_IDENTITY_TOKEN_FILE`, while preserving explicit API key and access
token precedence.
- Adapt workload identity exchanges to the shared authentication manager and
reuse a compatible process-scoped session for token resolution and refresh.
- Reject incomplete, conflicting, or unsupported configurations and exchanged
tokens that change the authenticated subject.
- Classify exchange failures for authentication retry handling and invalidate
rejected cached tokens without discarding a newer concurrent exchange.
## Testing
- Cover configuration selection and validation, session reuse and conflicts,
identity-preserving refreshes, concurrent refreshes, and retry classification.
GitOrigin-RevId: 62afb514b4e0a59effb08f464ac929633462a71b
## What changed
- Update the workspace `lru` requirement to `0.18.2`, consolidating consumers on a single version.
- Raise the `webbrowser` requirement to `1.2.2` and refresh the Cargo and Bazel lockfiles.
GitOrigin-RevId: c70dce42f4b6e0dc5567a28f778fd12c720d8f4c
## What changed
- Add `codex-build-info` to resolve a packaged runtime's semantic version from `codex-package.json` while preserving the commit stamped into the executable.
- Represent source builds as version `0.0.0` and expose helpers for display, serialization, and source-build detection.
- Stamp `STABLE_GIT_COMMIT` into final Bazel Rust binaries so Git changes do not invalidate the shared library graph.
## Testing
- Cover packaged, source, legacy, and invalid-version resolution, plus serialization round trips.
GitOrigin-RevId: 669b02449644c738ba2946a1b7aafe4ec31a9edb
## What changed
- Add `codex-history` for model-history and persisted-rollout domain types, including `RolloutItem`, `RolloutLine`, `CompactedItem`, and initial/resumed history state.
- Re-export the persisted types from `codex-rollout` and update consumers to use the new crate boundary instead of `codex-protocol`.
- Preserve existing rollout serialization, including legacy numeric compacted-window IDs.
## Testing
- Add `codex-history` tests for rollout JSON round trips, compacted-history compatibility, persisted history modes, and multi-agent version selection.
GitOrigin-RevId: 944daa9297ddd231d3aebbdcb05fff4adf8b4e1b
## What changed
- Add the `codex-workload-identity` crate for exchanging a file-backed JWT assertion and federation rule ID for short-lived ChatGPT credentials.
- Cache valid access tokens, refresh them before expiry or after rejection, and coalesce concurrent exchanges. Continue using a still-valid cached token when a proactive refresh fails transiently.
- Validate assertion files, token endpoints, and exchange responses; honor outbound proxy policy for HTTPS endpoints and redact access tokens from debug output.
## Testing
- Cover request encoding, assertion rotation, caching, concurrent refreshes, transient-failure fallback, configuration validation, and malformed inputs and responses.
GitOrigin-RevId: 5496851683c2dcf6aaad6840053b97f7c0be076e
## What changed
- Move `SkillLoadOutcome` and its implicit-path indexing into
`codex-skills-extension`.
- Import shared skill types directly from `codex-skills` and keep the skill
prompt size limit with the extension renderer that uses it.
- Remove `codex-core-skills` from the Cargo workspace and dependent crates.
GitOrigin-RevId: 4e9e84909fa2f692bcc94af990bb4671affd776f
## What changed
- Add a `codex-diagnostics` crate that snapshots the process ID, available
resident-memory measurements, and registered process-wide gauges.
- Provide guards that update gauges for the lifetime of measured objects.
- Track live `CodexThread` instances with the `core.threads.live` gauge.
## Testing
- Add unit coverage for gauge registration, guard lifetimes, process memory
snapshots, and live-thread reporting.
GitOrigin-RevId: 3236b086bd4ebe31ed4768ab87a5fa288b0891b0
## What changed
- Add a storage-neutral queue extension for listing, adding, editing, reordering, deleting, and explicitly starting queued user messages.
- Dispatch queued messages in FIFO order when a thread becomes idle after a completed turn, while leaving them queued after interruptions or failures.
- Wait for user input to be persisted before removing its queue item, and report hook rejection, task termination, and persistence failures distinctly.
- Snapshot local image and audio attachments into validated data URLs before storing them, enforce input limits, and emit `ThreadQueueChanged` events after mutations.
## Testing
- Cover queue mutations, automatic and explicit dispatch, interruption and failure behavior, hook rejection, invalid records, input limits, and local attachment snapshotting.
GitOrigin-RevId: 14f39d7c8cbaccb767a6da84b82cced0edfcb4b9
## What changed
- Add `codex-utils-audio` as a workspace crate for canonicalizing audio inputs
and estimating their token usage.
- Update `codex-core` to consume the new crate while preserving the existing
audio preparation tests.
GitOrigin-RevId: d719ecc08363ef52778aa37f3df0ca14f7778324
## Why
MCP tools can be exposed directly, discovered through tool search, or called
from Code Mode. Servers need to be able to opt out of any of these surfaces
without disabling their tools everywhere.
## What changed
- Add `omit_tools_from` to MCP server configuration, accepting any combination
of `direct`, `deferred`, and `code_mode`.
- Apply the exclusions independently when building direct, deferred, and Code
Mode tool surfaces while keeping omitted tools registered for permitted uses.
- Remove client-private `_meta` fields from MCP results returned to Code Mode.
- Include the new setting in the configuration schema and MCP config
serialization.
## Testing
- Cover every exposure combination across Code Mode, Code-Mode-only sessions,
tool search, direct-only namespaces, and prefixed and unprefixed MCP names.
- Verify direct and nested execution paths, parallel-call support, config
round-tripping, and `_meta` filtering.
GitOrigin-RevId: 12dfcb78bb5c5ecf4d70f38a8b5022792463a27f
## What changed
- Move the V8 implementation into a dedicated `codex-code-mode-runtime` crate used by `codex-code-mode-host`, removing the embedded runtime fallback from the Codex process.
- Resolve the host executable from the active installation layout and check its availability before selecting tools.
- Fall back to direct tools with a one-time warning when optional code mode is unavailable. Keep `code_mode_only` and `disable_in_process_fallback` configurations fail-closed.
## Testing
- Cover host discovery for standalone and package layouts, including missing hosts and symlinks.
- Verify direct-tool fallback, one-time warnings, and fail-closed code-mode-only behavior.
GitOrigin-RevId: 5aa3c6f1db148b2231fc24089a2ee0e2b00dbddb
