## Why
Executor-owned MCP configuration can include required servers that are unavailable. Guardian review sessions should not attempt to discover those servers or let them block an approval review.
## What changed
- Skip projecting MCP servers from selected executors when the session source is a Guardian reviewer.
- Preserve executor MCP discovery for regular thread sessions.
## Testing
Added an app-server integration test that configures an unreachable required executor MCP server and verifies that Guardian can still review an escalated command and return its decision.
GitOrigin-RevId: 5b712a3ee04e6896d5ca0cff39a32dd8e0fe0132
## Why
Browser MCP bearer tokens live in the executor environment and are not
inherited when an executor is spawned.
## What changed
Update the executor MCP integration test to launch `exec-server` over a
WebSocket, provide the bearer token only to that process, and configure the
MCP server with `bearer_token_env_var`. Register the running executor by URL
and verify the token is absent from the app-server test environment.
GitOrigin-RevId: 319b073d2eb1dbca015d4e6fea8ca714e78f3246
## What changed
- Add the under-development `shell_snapshot_v2` feature and advertise executor support through environment capabilities.
- Use executor-managed, in-memory snapshots for eligible direct `bash`, `zsh`, and `sh` login commands, while applying the configured shell environment policy and avoiding duplicate automatic startup-file effects.
- Keep file-backed snapshots available for user-shell commands and fall back to the existing execution path when in-memory snapshots are unsupported or inapplicable.
## Testing
- Cover policy filtering, snapshot reuse without snapshot files, automatic startup files, local and remote execution, and legacy user-shell snapshots.
GitOrigin-RevId: 4ad6cdf13824913ac8c393ba38b9844230677579
## What changed
- Add `chat.toggle_voice_mute` to the configurable TUI keymap and generated configuration schema.
- Let the exec-server version-skew harness build the voice-enabled CLI on Debian-like Linux hosts without preinstalled development metadata by assembling a temporary package sysroot.
- Preserve the existing build path on other Linux environments when the Debian package tools are unavailable.
## Testing
- Add a shell test that verifies a non-Debian Linux environment without voice metadata still proceeds to the Cargo build.
GitOrigin-RevId: 95c5ebc3f85d152a5217dee561286f2be662f79a
## What changed
- Preserve the `required` setting on HTTP MCP servers discovered from a selected executor.
- Cover delayed startup for a required executor MCP server and verify its tool is available on the first turn.
GitOrigin-RevId: df66e12233b8e1aaa7744e29c154157af8dc4776
## What changed
- Read `mcp_servers` configuration and requirements from each selected remote
executor and add eligible HTTP servers to the thread's MCP runtime.
- Bind discovered servers to the thread's concrete executor snapshot and apply
environment MCP policy and requirements. Discovery is best effort, and
executor-local servers are not treated as required at startup.
- Ignore unsupported stdio servers and HTTP configurations that depend on
environment-provided headers or header helpers.
## Testing
- Added an app-server integration test covering discovery, authenticated HTTP
tool invocation, requirements enforcement, and exclusion of stdio servers.
GitOrigin-RevId: 6e1cdcebdbb1cc21a5a2285fbc5617d8d5997182
## What changed
Use a 30-second handshake timeout for locally spawned code-mode hosts while
retaining the existing 10-second timeout for WebSocket connections.
GitOrigin-RevId: de1801c062b5c71d4c7b2c33a53b51e0b672445e
## What changed
- Cap each `ExecCommandOutputDelta` frame at 8 KiB and stop building frames once the per-call delta quota is exhausted.
- Preserve complete UTF-8 scalars across producer chunks while passing malformed or incomplete trailing bytes through without losing them.
- Append all process output to the transcript independently of delta emission.
## Testing
- Cover split multibyte characters, malformed and trailing bytes, frame and event limits, transcript preservation, and interactive PTY output.
GitOrigin-RevId: ef4100e353df01569a8fbae650c70f439920a2fd
## Why
Interactive MCP OAuth must not trust authorization metadata that could route an
authorization code or PKCE verifier to an unrelated token endpoint.
## What changed
- Require an advertised issuer to match the origin that served authorization
metadata.
- Validate authorization and token endpoint origins before starting both
pre-registered and dynamically registered client flows.
- Allow delegated endpoint origins when the server advertises issuer-bound
authorization responses, while retaining narrow compatibility exceptions for
existing providers.
## Testing
Add coverage for rejected untrusted metadata, accepted issuer-bound delegation,
legacy provider exceptions, and both client registration paths.
GitOrigin-RevId: 43c9f94c9f6ba2d23d7e373576cf9fa26861cfc3
## Why
Remote HTTP MCP connections can source header values from the host environment,
so those variables must remain part of the connection identity even when the MCP
server runs in an executor environment.
## What changed
- Track `env_http_headers` variables for remote HTTP MCP connections.
- Continue tracking `bearer_token_env_var` only for local environments, where the
host resolves the token.
## Testing
Add coverage that verifies remote connections track host header variables without
tracking executor bearer-token variables, while local connections track both.
GitOrigin-RevId: 8fe175c54a101721a27b76495dcd298f0c2bc6a3
## Why
Executor-owned HTTP MCP servers need to read their bearer credentials from the
selected executor environment instead of the host process.
## What changed
- Preserve `bearer_token_env_var` for executor-owned HTTP MCP configurations and
resolve it when the executor sends each request.
- Extend delegated HTTP headers with executor-local environment references while
rejecting missing, empty, or protected credential variables.
- Keep transport-provided bearer authentication compatible with MCP redirect and
OAuth handling without sending a placeholder authorization value.
## Testing
- Cover authenticated executor-owned MCP requests end to end.
- Cover delegated header resolution and rejection of protected variables.
- Cover parsing executor-owned bearer configuration and transport-provided bearer
behavior.
GitOrigin-RevId: 442bf7382198ffb69eba797eb36d4c74faabda88
## What changed
- Apply all per-request environment overrides, including `PATH`, after restoring
the captured shell environment.
- Remove `runtime_path_prepends` from `ShellSnapshotRequest` and the associated
PATH replay and deduplication logic.
- Keep the shell snapshot integration test's runtime PATH setup in the command
being executed.
GitOrigin-RevId: a6f8d2e144bf9977c7434bc58b60ac972f7e0449
## Why
Clients that create and negotiate realtime calls themselves need Codex to join
those calls without creating another call or overwriting the client-owned
session configuration.
## What changed
- Add the `existingCall` transport to `thread/realtime/start`, accepting a
client-provided `callId` and optional `realtimeSessionId`.
- Attach Codex over the call's sideband WebSocket without SDP negotiation or a
session update, and reconnect that sideband while preserving transcript
state.
- Default existing calls to realtime v1, support v1 and v3, and reject v2 or
options that would reconfigure the client-owned session.
- Encode call IDs as a single URL path segment for v3 sideband connections.
## Testing
Add protocol, app-server, core, reconnection, authentication-header, and URL
encoding coverage for existing-call attachments.
GitOrigin-RevId: 2046b70566f98efa55381bb1e461ea3cc68256c5
## What changed
- Add unbound `previous_permission_mode` and `next_permission_mode` actions to
`tui.keymap.chat` so users can configure shortcuts that cycle through the
available built-in permission modes.
- Apply shortcut selections only to the active session, without writing them
to `config.toml`, and report update failures in the transcript.
- Exclude modes disallowed by managed requirements or platform safety checks,
reject printable-key bindings, and ignore these bindings in project config.
## Testing
- Cover mode cycling, unavailable modes, session-only updates, server errors,
stale threads, keymap validation, and project-config sanitization.
GitOrigin-RevId: c3cfdf1e732b7b7bfe8f53fcac19a37e593bbfab
## Why
`codex agents` rejected invocation-specific configuration, preventing the
dashboard from applying settings when starting a shared thread.
## What changed
- Accept interactive options such as model, approval, sandbox, search, working
directory, and configuration overrides when opening the agents dashboard.
- Forward supported session-flag configuration into threads started through an
embedded or remote app server, while excluding unrelated values.
- Continue to reject initial prompts and images, along with local provider and
additional-directory settings that cannot be applied to a remote server.
## Testing
- Cover accepted dashboard options and rejected incompatible inputs.
- Verify that explicit feature and sandbox overrides reach shared threads in
both embedded and remote modes.
GitOrigin-RevId: f10aa1e16ff62b49d55679e987d9e458438ba3f8
## Why
Pending input previews display at most three wrapped rows, but previously wrapped every logical line before truncating the result. This made rendering do unnecessary work for very large multiline inputs.
## What changed
Limit pending steers, rejected steers, and queued follow-up inputs to four source lines before wrapping: three for the preview and one to detect overflow and render the ellipsis.
## Testing
Keep multiline preview coverage for queued messages and pending steers, including blank lines near the truncation boundary.
GitOrigin-RevId: 4c300b13532983ff9c3bdfbd62d6ca722ea3a5aa
## Why
Refreshing a Noise rendezvous bundle after an unauthorized handshake inherited
the initial registry lookup's retry count. If that lookup had exhausted its
retries, a transient registry error during the refresh failed immediately.
## What changed
Reset the registry retry count along with the operation deadline before
requesting a replacement bundle after a `401` handshake response.
## Testing
Extend the initial Noise connection test to exhaust the first lookup's retry
budget, receive a `401`, then verify that an offline replacement lookup is
retried and connects successfully.
GitOrigin-RevId: bcfad50ea32d69855f1c2c4c461022b3ecbbd941
## What changed
- Add `context_window_id` to turn metadata for sampling and compaction requests, using the UUID for the model-visible context window.
- Keep the ID stable for requests in the same context window and advance it after compaction, independently of the existing thread-generation `window_id`.
- Reserve `context_window_id` so client metadata cannot override it.
## Testing
- Cover HTTP and WebSocket metadata, remote compaction, token-budget context alignment, resume behavior, and post-compaction window changes.
GitOrigin-RevId: 55cceea377ad509c8dd96ad668f2b5703ea46a63
## What changed
- Skip project-scoped `AGENTS.md` discovery when the active project is untrusted, while preserving user-level instructions.
- Include the active project trust level in the instruction cache key so runtime trust changes reload the applicable instructions.
- Preserve updated project trust metadata during runtime configuration refreshes.
## Testing
Add coverage for initially untrusted projects and for switching between trusted and untrusted states at runtime.
GitOrigin-RevId: 284bf7693943f585013fb5fe4b6aa3309bc50cf3
## What changed
Rename the token-budget configuration key and its Rust field from
`use_history_notes_history` to `use_history_notes_extension`. Update the config
schema, extension gating, explicit-setting detection, and tests to use the new
name consistently.
GitOrigin-RevId: b6a514e23f02095fcd1d35dc42eeb7394b800c77
## 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
- Switch Amazon Bedrock remote compaction to `compaction_trigger` items sent through `/v1/responses`.
- Remove the legacy dedicated compaction protocol from provider capabilities.
- Default remote compaction to unsupported and explicitly enable it for OpenAI, Azure Responses, and Amazon Bedrock providers.
## Testing
- Cover manual and automatic Amazon Bedrock compaction requests and their compacted history.
- Verify remote-compaction capabilities for configured and Amazon Bedrock providers.
GitOrigin-RevId: cf9ba314595367518b37a85f334f0c105ce47e45
## Why
Guardian v2 applied an implicit token limit to classifier instructions even when
no limit was configured, which could truncate the rendered policy.
## What changed
- Leave classifier instructions unbounded by default.
- Continue honoring `max_classifier_instruction_tokens` from local or model
configuration, with local configuration taking precedence.
## Testing
- Cover full policy rendering without a configured cap and truncation when an
explicit cap is present.
GitOrigin-RevId: 70eb42d43858e0656129dd438b10b60940fd97c6
## Why
Applying session settings rebuilt and compared a legacy filesystem policy even
when the update could not trigger cwd-based policy rebinding.
## What changed
Compute the legacy projection only for cwd changes whose filesystem policy has
a rebindable project-root write entry. Preserve the existing equivalence check
before rederiving the policy.
GitOrigin-RevId: c428a5c54f1b5b1300be406cac374a6fd29bb9a8
## What changed
- Add `FileSystemSandboxPolicy::has_writable_roots_with_cwd` to detect an
effective writable root without constructing its read-only carveouts.
- Use the helper when classifying permission profiles and selecting patch
rejection reasons.
## Testing
- Verify the presence check matches the existing materialized-root result
across read-only, unrestricted, external, writable, denied, and unresolved
special-path policies.
GitOrigin-RevId: 17ee490aa3180e05732133203f68544d9de5268b
## Why
The macOS preferences service can expose data outside a sandbox's allowed
filesystem read roots.
## What changed
- Move the Seatbelt preference and `cfprefsd` grants into a separate policy
section that is included only when filesystem reads are unrestricted.
- Remove the equivalent grants from the restricted platform defaults.
## Testing
- Verify both Seatbelt profiles include preference grants only for full-disk
read policies, including policies with denied paths or globs.
- Verify a restricted sandbox cannot retrieve a preference whose plist is
denied, while an unrestricted read policy can.
GitOrigin-RevId: 90388366a7302bca1830ad0439544be8babc7321
## What changed
- Add `WINDIR` to the Windows core environment variable allowlist.
- Extend the Windows core-inheritance test to verify that a case-variant
`WinDir` entry is retained.
GitOrigin-RevId: 0305d8fa882ba2705a7ce7661098cedac1339c43
## What changed
- Read the optional `pdf_c2pa_reservation` flag from file creation responses.
- When a reservation is present, include the original creation payload as
`pdf_c2pa_create_request` in the upload finalization request.
- Keep sending an empty finalization payload when the flag is absent for
compatibility with older server responses.
## Testing
- Cover reserved hosted PDF uploads and the legacy empty-payload path with mock
server tests.
GitOrigin-RevId: 454a4b9d872d70766c2bbb6c01d6015f7127af2f
## Why
Amazon Bedrock does not support the response items required by multi-agent V2.
## What changed
- Normalize Bedrock model catalogs to advertise `MultiAgentVersion::V1`.
- Cover both remote catalog normalization and the static Bedrock Runtime catalog in tests.
GitOrigin-RevId: 93832cd4b885daf4b87fb33a7be8502ae15c1b24
## What changed
Map lowercase match offsets back to the original thread text with monotonic
span cursors. This avoids rescanning all character spans for every occurrence
while preserving the original byte ranges returned for matches.
GitOrigin-RevId: 363fba5d56813c3aeb2a7ede1d7275147a9ef51a
## 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
- Add app-server client, runtime, thread source, and parent thread ID metadata to archive and unarchive analytics events when the reducer has that context.
- Omit non-automation feature thread sources and skip unavailable metadata.
## Testing
- Cover archive and unarchive event enrichment, filtered feature sources, and threads without cached context.
- Verify the app-server archive flow emits the enriched analytics payload.
GitOrigin-RevId: 163f9c30721cee0172bb4581b6dcd269e44cd941
## What changed
- Add `hostname` as a selectable status-line item and show it in setup previews.
- Read the normalized operating-system hostname without triggering DNS resolution, and omit the item when no hostname is available.
## Testing
- Cover hostname normalization, status-line rendering, and setup and surface previews.
GitOrigin-RevId: c5e4e0ee1dba6e4bfdf942562a6b037835ff9e69
## What changed
Install the `build-essential` package on apt-based runners in both full Rust CI workflows, including the platform-specific nextest workflow.
GitOrigin-RevId: 52e611235f032ed4a630301f40f8aafd9ca11a08
## What changed
- Apply the existing direct-input restriction to `thread/settings/update` for
parent-owned Multi-Agent V2 subagents.
- Document the restriction and extend the direct-input test to verify that the
request returns an invalid-request error.
GitOrigin-RevId: 2eead01c6f54ec637c68573378f3b56a7ee85652
## What changed
- Treat standalone `function_call_output` items without a `call_id` as external context, including items injected into new and forked threads, and mark the thread memory mode polluted when `memories.disable_on_external_context` is enabled.
- Include these outputs in guardian transcripts with their namespaced tool name and a placeholder for non-text content.
- Allow image generation to reuse images from standalone and otherwise unpaired function or custom-tool outputs.
## Testing
- Cover injected thread items, external-context detection, guardian transcript rendering, and recent-image selection.
GitOrigin-RevId: ca4e8c16a4b731e1256a5956908d00f785b4feb1
## What changed
Reuse the shared `build_zsh_fork_test` helper in the unified exec approval
suite and remove its identical suite-specific wrapper.
GitOrigin-RevId: 0593f0e1a56737eba1d491872a44d14e9171dbfb
## What changed
- Add `EnvironmentManager::from_accepted_websocket` so embedding hosts can
construct a remote environment from an already accepted and authenticated
Axum WebSocket.
- Add `replace_accepted_websocket` to retire the current transport and resume
the same exec-server session on a host-supplied replacement connection.
- Serialize replacement handoffs, reject overlapping replacements, and release
the handoff claim when a replacement attempt is cancelled or fails.
## Testing
- Cover initial connection validation and immediate environment readiness.
- Verify replacement retry behavior and recovery of a running process and its
output after reconnecting.
GitOrigin-RevId: 1f2ab7bcf7b5abbbece5c101801432dc84a8058d
## What changed
- Route turn-cost queries for non-OpenAI providers through the configured
provider endpoint and authentication, while retaining the existing OpenAI
API-key path and excluding Amazon Bedrock.
- Observe turns only when their model provider matches the worker's provider.
- Retry custom-provider authentication failures during periodic availability
probes and ensure client authentication takes precedence over provider
headers.
## Testing
- Add coverage for provider matching, custom-provider authentication retries,
ChatGPT-auth rejection, and header precedence.
GitOrigin-RevId: 04a7b28e8e3e18a510ae6fface5193af40d114c0
## Why
Rollout migration outcomes expose free-form error messages, making failures hard to group without parsing text.
## What changed
- Add a serialized `RolloutMigrationFailureReason` to failed outcomes and classify failures across reading, conversion, SQLite materialization, publishing, and recovery.
- Add the failure reason as a low-cardinality tag on per-thread migration telemetry.
## Testing
- Cover missing SQLite metadata and invalid session metadata classifications.
GitOrigin-RevId: 2bff98483b484f4d02b72d52f39950ff99ebe429
## Why
External tool events may need to enter thread history without a preceding function call and therefore do not have a `call_id`.
## What changed
- Allow `function_call_output` items to omit `call_id` and carry optional `name` and `namespace` fields.
- Preserve named standalone outputs during history normalization and agent forks while retaining existing pairing behavior for outputs with a `call_id`.
- Accept, persist, and forward these outputs through `thread/inject_items`, and update the app-server schemas and documentation.
## Testing
- Cover paired and standalone JSON round trips, history normalization, agent forks, and injected thread history.
GitOrigin-RevId: a3258163a7dc93777c7c3023116fe204819bdbb0
## What changed
- Add `otel.tool_result.max_bytes`, defaulting to 2048 bytes, to control the
text included in `codex.tool_result` logs independently of model-visible
output limits.
- Apply truncation centrally when emitting telemetry, preserve UTF-8
boundaries, and report whether the logged output was truncated.
- Record typed tool names and namespaces, agent names, and process-local result
sequence numbers while keeping tool arguments and output out of trace events.
## Testing
- Cover configuration propagation, UTF-8-safe truncation, raw tool-output
logging, and log/trace event routing and fields.
GitOrigin-RevId: 89ca76e55f1a09b729e7770ce01f2e4d98f9a22d
## What changed
- Retry transient environment-registry failures while opening the initial Noise rendezvous connection, including timeouts, interrupted response bodies, retryable HTTP statuses, and temporarily offline environments.
- Bound registry attempts with per-request and overall timeouts, exponential backoff, and a retry limit while returning permanent registry errors immediately.
- Preserve the existing one-time bundle refresh after an unauthorized WebSocket handshake, with a fresh registry retry window.
- Treat malformed complete JSON responses as terminal rather than retryable transport failures.
## Testing
- Cover transient and permanent registry responses, stalled requests, retry limits and deadlines, interrupted bodies, malformed JSON, unauthorized bundle refresh, and session-resume behavior.
GitOrigin-RevId: 5929274103702ad477e7a638ab489319a43a93fa
## What changed
- Require macOS Desktop app bundles to pass strict `codesign` verification for the Codex bundle identifier and OpenAI signing team.
- Verify downloaded apps before installation and existing apps before launch.
- Add tests that reject unsigned bundles, ad-hoc signatures, and attempts to launch an unsigned existing app.
GitOrigin-RevId: 9b23739281d8abf7fc30c5366960eb1bb07a1b7d
## What changed
- Use `exec_command` and `write_stdin` as the shell tool surface.
- Treat legacy `default`, `local`, and `shell_command` model metadata as `unified_exec`.
- Remove obsolete shell-selection configuration and runtime paths while preserving the feature and policy gates for zsh fork execution.
GitOrigin-RevId: d743cbe598630d73052f1fecad680c4cde17977d
## What changed
- Add the hidden Daybreak Blue and Daybreak Red model definitions.
- Refresh model capabilities, instructions, plan availability, and service-tier metadata.
- Configure the auto-review model for Responses Lite and code-mode tools, and update Guardian request tests for the resulting `additional_tools` and developer-message layout.
## Testing
- Update Guardian request snapshots and assertions for initial and follow-up reviews.
- Verify MCP approval routing against the developer-message form of the Guardian prompt.
GitOrigin-RevId: 6680e9abebdcbc43224a81348591e26f8422f3ec
## What changed
- Add `suggestion_id` to plugin install elicitation metadata, using the same
value as the elicitation request ID and plugin-install analytics event.
- Leave connector install metadata unchanged by omitting the field.
## Testing
- Cover plugin and connector metadata serialization.
- Verify that remote plugin install metadata and analytics carry matching
suggestion IDs.
GitOrigin-RevId: 05dd1d210e2a82857094f09d27ecba79ee460b7e
## What changed
- Add experimental `mcpServer/event/stream/start` and `mcpServer/event/stream/stop` requests for hosted apps, plus `mcpServer/event/stream/notification` forwarding.
- Scope subscriptions to the owning app-server connection and subscribed thread, enforce unique IDs and a per-connection limit, and clean them up when the thread is unsubscribed or the connection closes.
- Wait for the MCP active notification before completing startup, retry streams that close immediately, and terminate them when authentication or hosted runtime ownership changes.
## Testing
- Add an app-server integration test covering activation, event forwarding, duplicate subscription rejection, and explicit cancellation.
GitOrigin-RevId: 8a6fc1615adfc5af7e67def3b824fa5909ab3e7b
## What changed
- Remove the legacy `shell_command` handler and runtime, leaving `exec_command`
and `write_stdin` as the shell execution tools.
- Treat legacy `shell_command` model metadata as `unified_exec`, and normalize
legacy user opt-outs so they do not disable command execution. Managed feature
requirements and `shell_tool` can still disable it.
- Preserve shell approvals, sandboxing, zsh-fork support, and output truncation
through the unified execution path.
## Testing
- Cover legacy configuration and model-metadata compatibility.
- Exercise unified shell execution, approvals, truncation, and `apply_patch`
serialization across the app-server and core test suites.
GitOrigin-RevId: 5c2fd6164fc3519cdae4944cb9db276b8467311c
