## What changed
- Remove `Config::legacy_sandbox_policy` and `Permissions::legacy_sandbox_policy`.
- Update core and TUI tests to use permission profiles and filesystem/network policies directly, with explicit conversion where legacy wire formats are required.
- Report the active sandbox label in app-server resume override mismatch diagnostics.
GitOrigin-RevId: cbc5417944e23404523e69dc5516d66d6bfafefe
## What changed
- Add the disabled-by-default `file_backed_tool_audio` feature to prepare fresh function and custom tool audio through the attachment store before persistence. Store returned file IDs in history and preserve them on replay without uploading again.
- Validate and budget mixed text and audio output before uploading retained clips, preserving audio token charges and producer limits. Resolve tool audio durations before continuation compaction checks.
- Keep inline audio on backend upload failures and use text placeholders for invalid or rejected clips. Replace unavailable tool audio files with placeholders in prompts while retaining the original history, so restored files can be used again.
- Treat file-backed tool audio as a competing source when attributing audio or unknown-file errors to user uploads.
## Testing
Add coverage for direct tool and Code Mode audio across follow-up turns, file expiration, restoration, and resume in both legacy and paginated history. Extend tests for truncation before upload, upload failure handling, bounded error placeholders, and error attribution.
GitOrigin-RevId: 66c1e7699c7d92f98c3a2d0f5cecbbd63147eb6c
## What changed
Add `release_id: Option<String>` to `PluginSourceLocation::Cloud` to carry the opaque release ID selected by the cloud catalog for a plugin declaration. Update catalog and discovery test fixtures to supply the new field, including a populated release ID in catalog reconciliation tests.
GitOrigin-RevId: 1d60e25bd5fb8efd84e6e825305ad68b847fc1ee
## Why
Compaction can drop active client context while deduplication prevents unchanged values from being sent again on subsequent turns.
## What changed
Track additional context by history item ID and restore active items when installing complete or prefix compaction results. Preserve their history order, refresh retained items with their original bounded payloads, and leave queued updates to arrive with their input.
## Testing
Add regression coverage for local compaction with message context and remote compaction with tool-output context. Verify that current context survives exactly once, stale values are absent, and restored context precedes the preserved user prompt.
GitOrigin-RevId: a3114f387c6a4ae1a2d1651993d0f7a101be7dd5
## Why
Cached recommendations can keep offering a plugin after installation. Refreshing the shared catalog during step preparation can also leave the recommendation prompt and install handler with different candidates.
## What changed
- Check `tooling_changed_at` before reusing recommendations, with a one-second reuse window and a 250 ms deadline that includes authentication. Refresh the catalog when the marker changes, preserving cached recommendations on failure and retrying on a later poll.
- Scope recommendation and featured-plugin caches by product, backend, and account identity, and share concurrent recommendation refreshes.
- Use the same recommendation snapshot for a step's prompt and install handler, while allowing later steps to observe updated recommendations.
## Testing
Add coverage for marker changes, missing markers, refresh failures, concurrent and cancelled requests, and the authentication deadline. Extend integration tests to verify consistent step candidates and stop offering an installed plugin while preserving the original recommendation block in conversation history.
GitOrigin-RevId: 44fa6723a623d9604f0c768118bc6889d2d3b693
## Why
Cloud plugin discovery previously ran each turn even when authentication and Apps resources were unchanged.
## What changed
- Reuse complete, warning-free catalogs across turns, including empty catalogs, while authentication and the Apps resource cache key match.
- Retry partial catalogs and catalogs with warnings on subsequent turns, preserving failure backoff.
- Reject discovery results if authentication or Apps resources changed while discovery was in flight. Hosts must invalidate Apps resources when the remote plugin catalog changes.
## Testing
Extend lifecycle tests to cover populated and empty cache reuse, resource and auth invalidation during discovery, and reuse of the empty catalog after plugin revocation.
GitOrigin-RevId: f0f0f4fd5a83179d722ba3cb917deec7eef18458
## What changed
- Make `TimeProvider::current_time` and `CodexThread::current_time` synchronous, with clock reads required to avoid yielding or calling back into the session.
- Remove the experimental `currentTime/read` app-server request and its client-backed clock and sleep polling implementation.
- Require a host-provided `TimeProvider` for external clocks. App-server thread startup now fails when `features.current_time_reminder.clock_source = "external"` has no provider.
## Testing
Add coverage for external provider selection and rejection of app-server thread startup without an external provider.
GitOrigin-RevId: 09479d6eb28453b343dee78b3673092e73ae5d73
## What changed
Request plugin suggestions with `includeInstalled=false` and use the endpoint results without filtering against loaded plugins or the local installed-plugin cache. Retain disabled-tool and client eligibility filtering, and remove plugin loading that was only needed for recommendation filtering.
## Testing
Update tests to verify the query parameter and confirm that endpoint recommendations survive local installed-cache filtering while disabled tools remain excluded.
GitOrigin-RevId: a1b199f9ac8da7dae40abe46b6ccfaf1d8230a5c
## What changed
Add `CodexThread::reproject_mcp_on_next_turn()` to request an MCP reprojection after `TurnStarted` and before tools are bound. Repeated requests coalesce, and idle reconciliation or prewarming leaves the request pending until the next regular turn.
## Testing
Add coverage for deferred requests surviving prewarm and idle reconciliation, coalescing into one reprojection, and exposing refreshed tools in the turn's first model request. Verify that discovery starts after `TurnStarted`.
GitOrigin-RevId: 260b2381013291a47eb9a7f736c129de76c5897f
## What changed
- Use the `rules_rs` 0.2.3 registry release instead of an archive override, and upgrade `platforms` to 1.1.0.
- Disable root crate alias targets and migrate explicit dependencies to package labels such as `@crates//tokio`. Disable root crate data for the argument comment linter's crate repository.
- Refresh the retained `rules_rs` patches, remove the zlib snapshot URL backport, and drop extra dependency declarations from `exec-server` and `v8-poc`.
GitOrigin-RevId: c354413a19b45964104457063c613028f5325bc0
## Why
Trusted classifier evidence needs to fit configured entry limits while preserving complete records and metadata that reflects only delivered reviews.
## What changed
Apply elastic caps before rendering trusted tools, trusted skills, and previous reviews into developer messages. Omit oversized tool attestations and review fragments whole, retain only complete skill paths that fit, and record omissions for the request's omission notice. Keep review IDs aligned with retained fragments and preserve fixed-budget behavior.
## Testing
Add coverage for whole-record omissions, retained review IDs, and omission notices. Exercise orchestrator connector evidence with both fixed budgeting and an elastic tool entry cap.
GitOrigin-RevId: 729db452026f93b59765a3936730b9b6dddfcf9a
## What changed
- Add `async_elastic_budgeting` and `async_elastic_sections` under `[features.guardianv2]`, independently of synchronous budgeting and disabled by default.
- Apply section limits and elastic allocation to new classifier evidence after accounting for setup and retained conversation history. Preserve the configured elastic policy when applying model defaults.
- Keep permission context whole during elastic allocation and record truncation observations when image preparation rejects an image.
## Testing
Add coverage for configuration validation, fixed and elastic conversation budgeting, retained history and cursor preservation, and complete classifier requests that retain evidence beyond the fixed entry limit.
GitOrigin-RevId: 2955f0482f7c3e18325e296fc2ccb6592ffcb73a
## What changed
Allow `thread/inject_items` to accept wrapped items with `retention: "default"` or `retention: "always"`, while preserving support for raw response items. Persist explicit policies separately from legacy client-authored metadata.
Carry explicitly retained items through local and remote compaction, context-window changes, and child-agent creation, subject to retention budgets. Preserve history order and keep retained tool exchanges together; require matching calls and outputs to be adjacent in the injection request and both marked `always`.
Update Quinn dependencies and record exceptions for additional Hickory DNSSEC advisories where DNSSEC is disabled.
## Testing
Update injection tests for explicit retention metadata and extend the compaction scenario to cover a retained tool exchange across repeated compaction and restart.
GitOrigin-RevId: 1195a4ed62dc162a62e58bc2ad733262fbabea27
## What changed
Remove `SandboxDirectSpawnTransformRequest` and `transform_for_direct_spawn` in favor of `SandboxManager::for_file_system_helpers().transform()`. Keep Windows wrapper preparation specific to filesystem helpers, and return `SandboxUnavailable` when a Windows token sandbox is requested for a filesystem helper on a non-Windows executor.
Record the helper permission entry count during launch policy preparation, before adding runtime read grants.
## Testing
Cover Windows helper executable read access and explicit workspace write grants, including empty workspace roots. Verify rejection of non-native policy working directories and Windows token helper sandboxes on Unix. Extend the helper isolation test to exercise sandboxed writes as well as reads.
GitOrigin-RevId: f95bb94e12d8d7c6e5c773644abb7b59b47ffc4a
## What changed
- Read response window metadata through `current_window_from_state` with an explicit session state lock, releasing it before assembling response metadata.
- Name the token budget feature check used when restoring a forked child window.
- Pass an explicit `TestEnv` into the async compaction test helper and build with `build_with_environment`.
GitOrigin-RevId: 7ad852dbd65689e814f62cad645330ac5dac80f4
## Why
An unset voice preference should use the call destination's default. Changed or cleared preferences should also take effect on the next V3 call, even when the thread retains an older setting.
## What changed
- Use `gpt-live-1.1-codex` as the default V3 realtime model.
- Preserve an unset voice until request serialization, defaulting V3 API calls to `marin` and ChatGPT calls to `cove`, while honoring explicit voice selections.
- Reload current voice settings when starting a new V3 call through the app server, including cleared preferences.
- Populate the TUI voice picker from the V3 catalog, add `marin` to that catalog, and remove voice-catalog lookups from call startup and preference saving.
## Testing
Add regression coverage for API and ChatGPT voice defaults, explicit overrides, changed and cleared settings, and TUI call requests and voice selection.
GitOrigin-RevId: d0dd4dcd4bcad9ab869d7bf524e7095a88ffcfaa
## Why
MCP servers registered under the same name in different environments need distinct inventory, routing, and status reporting.
## What changed
- Keep MCP inventory and runtime status keyed by registration scope so same-named servers remain separate.
- Add optional `environmentId` selectors for status lookup, tool calls, resource reads, and OAuth login. Omitting the selector preserves existing name-only routing.
- Carry environment identity through startup notifications, elicitation requests, and tool-call history, and display it in the TUI.
- Support `/mcp login <name> --environment <id>` and update generated protocol schemas and SDK types.
## Testing
Add integration coverage for two environments with identically named MCP servers, tools, and resource URIs. Verify separate inventory, explicit environment routing, legacy routing when the selector is omitted, and errors for unknown environments. Update protocol and TUI tests for environment identity.
GitOrigin-RevId: 074a3db10549438cb6aff33eb7bed10791adae4d
## Why
Recording inference starts synchronously serializes prompts and writes trace payloads before model work can proceed. Defer that work so inference dispatch can continue while the trace is recorded.
## What changed
- Use one worker per trace bundle to write events in submission order, with up to eight pending jobs.
- Share prepared prompts and encoded requests with the worker, and build remote compaction snapshots there. Write payloads before publishing events that reference them.
- Add `TraceWriter::flush` and `ThreadTraceContext::flush` for live reads. Drain accepted jobs and seal the bundle on shutdown; suppress the closing marker after a recording failure.
## Testing
Add tests for deferred prompt serialization, ordered start and completion events, shutdown draining, and serialization failures that preserve earlier evidence without publishing a closing marker. Verify compaction snapshots are built on the worker and skipped when tracing is disabled.
GitOrigin-RevId: 32fd787bb1d281f1814df2f08c73b667628f8add
## What changed
- Replace individual JSON payload files with numbered Zstandard shards in trace schema v3. Add `PayloadReader` to resolve payload references, cache decoded shards, and validate payloads during replay.
- Capture exact outgoing HTTP bodies and WebSocket messages alongside prepared prompts. Preserve full formatted context for continuations from unrecorded WebSocket warmups while retaining the actual incremental request.
- Flush payload records before publishing references and seal the final shard before recording completion. Replace `recording_complete` with `recording_status` to distinguish unclosed recordings, closed recordings with partial payloads, and complete recordings.
Reduce trace bundles with the binary that recorded them.
## Testing
Add coverage for shard rotation, oversized records, live reads, cache eviction, and malformed or corrupt payloads. Extend HTTP and WebSocket integration assertions to verify captured requests and prepared prompts, including warmup continuations.
GitOrigin-RevId: 40ce3c11383f48e08f52e7120b706c61a449df9c
## What changed
- Add the disabled-by-default `catalog_apps_instructions` feature to use the selected model's `model_messages.apps.usage_instructions`, subject to existing Apps availability and model gates.
- Preserve valid catalog text literally, allow an empty string to clear guidance, and fall back to bundled instructions for missing, whitespace-only, or oversized values. Overrides are limited to 800 UTF-8 bytes.
- Reconcile guidance with the latest retained Apps fragment, emitting replacement or removal notices when needed and avoiding repeated updates across resumes. Preserve compatibility with bundled guidance and legacy checkpoints.
- Recognize catalog Apps fragments as contextual developer messages in event mapping and rollout rollback.
## Testing
Add resolver, world-state, client, and scenario coverage for literal text and byte limits, feature and availability gates, model switches, clearing guidance, resumes, and legacy history recovery.
GitOrigin-RevId: 6240d407ada8f22fa101753ff3ddb338632ae283
## What changed
- Update the workspace, Bazel toolchain and lockfile, CI and release workflows, and Windows setup script from Rust `1.95.0` to `1.99.1`.
- Adapt Rust code to the updated toolchain and Clippy lints, including `try_update` for atomics, `as_chunks` for fixed-size slices, and targeted allowances for generated tonic services.
- Refresh the halfwidth sound mark rendering snapshot to use literal characters in debug output.
GitOrigin-RevId: 5852029f687436dc814c2bca68141ee1f4a67d49
## Why
Suspending a locally controlled agent tree must preserve unfinished turns and child results that arrive during teardown so they remain available after recovery.
## What changed
- Add `ThreadManager::suspend_agent_tree` to stop durable trees, close their writers, and return unfinished root and named V2 child turn IDs plus any pending root wake.
- Persist terminal child results before suspension succeeds, including results queued for evicted parents. Report failed or unconfirmed writes.
- Add `load_suspended_agent` to restore named V2 descendants through their recorded ancestors without starting model turns.
- Allow empty `continue_turn_if_idle` input to wake on saved results, guarded by the preceding turn ID. Keep mail queued until task registration so suspension can preserve it.
## Testing
Add coverage for completion and wake races, child errors, parent writer failures, evicted parents, descendant restoration, repeated suspension after caller cancellation, and ephemeral roots remaining active.
GitOrigin-RevId: 3041791f51bff2555210f6b2d2443f9f05f68330
Describe remote board connection settings, host ownership, and configured
clocks in general terms. Update the remote board test credential to match
that terminology.
GitOrigin-RevId: c2c32808c98afad849f6e4f59f75d8d204f51694
## What changed
Stop rebuilding permission profiles through the legacy sandbox policy when only the working directory changes. Preserve the profile, its active selection, and profile workspace roots while updating runtime workspace roots for the new directory.
## Testing
Extend regression coverage to check that directory-only updates preserve the permission profile snapshot and expected thread settings. Verify that workspace-write permissions allow ordinary files in the new workspace while denying writes to `.git/config` and the previous workspace.
GitOrigin-RevId: a4f4b2dc4ffa16cbf33ddb124eed4b759b2aae78
## Why
Plan items used a single ID derived from the turn ID, so multiple completed plans within one turn shared an ID across retries or tool continuations.
## What changed
Generate UUIDv7 plan item IDs and carry an unfinished plan's ID across model requests within a turn. Once a plan completes, assign a fresh ID to the next plan.
## Testing
Add unit and integration coverage for unfinished retries, retries after plan completion, and tool continuations, including matching streamed events to saved completions. Update the app-server test to check plan IDs against the start notification.
GitOrigin-RevId: 87b4b3e6bd74224ea96f4308f739bcd2efb62299
## What changed
Preserve original root conversation evidence, retained instructions, assistant context, and verified answers until request preparation. Apply shared section preparation to both synchronous and asynchronous reviews, preserving fixed limits and omission notices while allowing elastic preparation to use the originals. Cache the fixed root view for reuse.
Split classifier setup from final input assembly and normalize new images before deduplication and token accounting, preserving committed history.
## Testing
Extend tests for fixed and elastic preparation across both review profiles, original root evidence after handoff, and image normalization during retained-request preparation.
GitOrigin-RevId: 86c83384c1f5be3707622d675fc54b4c8e1ddc0a
## What changed
Route direct reviews through the reusable Guardian session so sequential `thread/guardianReview` calls on the same loaded thread can share review history with live approvals. Keep the reviewer conversation separate from the actor and follow the parent thread's persistence settings. Retries reassess the final call under the current policy.
## Testing
Extend app-server coverage to verify history reuse within a parent thread and isolation between parents. Extend the core scenario and snapshot to cover sequential direct reviews without executing the recorded commands.
GitOrigin-RevId: 5f10a04aec43a9351e38575265cb6b5ff06530a5
## What changed
- Remove `Config::set_legacy_sandbox_policy` and update session, approval, and Guardian test setup to set permission profiles and workspace roots explicitly.
- Reuse `PermissionProfile::from_legacy_sandbox_policy_for_cwd` for legacy policy validation and updates in `Permissions`.
GitOrigin-RevId: 5ee92c46290ee6a3d7e2d2db7b02641e80bdc44f
## Why
Allow collector credentials to refresh without rebuilding OpenTelemetry providers.
## What changed
Add `otel.headers_helper`, a command run from `CODEX_HOME` that returns a JSON object of header strings. Share its results across explicitly configured HTTP log, trace, and metric exporters. Refresh every 29 minutes by default, configurable through `otel.headers_helper_refresh_interval_ms`.
Helper headers override matching static headers. Failed refreshes block affected exports until the helper recovers, and HTTP redirects are disabled when helper headers are used. Repository-local configuration cannot set the helper; exporters set by admin requirements, gRPC exporters, and built-in analytics do not use it. Helper execution respects network policy.
## Testing
Add tests for shared execution, credential refresh and recovery, blocked exports after failure, network restrictions, and configuration validation. Collector tests cover header precedence across all three signals using JSON and binary HTTP encodings, including exclusion of an admin-managed exporter.
GitOrigin-RevId: 89018ac09c2c99523d3f92bf77048e7ed9dae5f2
## What changed
Parse reasoning removals from response `input_transformations` and carry the counts through completion events to sampling telemetry.
- Add `codex.responses.reasoning_replay` to distinguish unavailable reports, no reported removals, prefix mismatches, and other removals.
- Add `codex.responses.reasoning_items_removed` histograms by bounded removal reason, grouping unknown or missing reasons under `other`.
- Include zero counts for usable reports; exclude missing, null, or malformed reports from histograms without failing the response.
- Use the sampling step's session telemetry when recording response events.
## Testing
Add SSE and WebSocket integration coverage for report availability, removal counts, unknown reasons, zero observations, and `product_sku` tags in exported metrics.
GitOrigin-RevId: 83c70ca6067fa4b34bf5c463958b4632a7a0a188
## What changed
- Initialize item and context-window ID generators per thread, reuse the stored window on resume, and give history reconstruction a separate item generator.
- Recover item ordinals from checkpoint replacement history, guardian history, and retained context without lowering the cursor established by earlier records.
- Stamp compaction resume metadata with the next item ordinal in append order, tracking the cursor in local and in-memory thread stores.
## Testing
Extend the history ordinal test to verify that a checkpoint records the cursor at its position in a batch, excluding later allocations.
GitOrigin-RevId: 7121b747a039dc5477235078702137d1ff74e789
## What changed
Add `transcript_selected_exec_results` to synchronous Guardian elastic budgeting so selected Code Mode `exec` outputs can receive a separate token reservation and entry cap from ordinary tool evidence.
Configure selection with `nested_tool_names`. Match results against the host-recorded inventory of completed nested tool calls, including normalized tool names, even when the original `exec` call has left review history. Leave the new section's reservation at zero when omitted.
## Testing
Add coverage for recorded-inventory matching and results whose calls are missing from history. Extend the elastic budgeting scenario to verify that selected output is retained while ordinary tool output is capped.
GitOrigin-RevId: 6a8de250e36b18f2acfdab993c83c254f101ce87
## Why
MCP servers discovered on different executors can share a name. Resolving them by name alone exposes only one server and prevents tools and resources from being addressed independently.
## What changed
- Add the disabled-by-default `multi_environment_mcp` feature to expose environment-scoped servers, including multiple installations of the same plugin.
- Carry exact `McpServerKey` identities through catalogs, connections, tool calls, resources, and approval tracking. Give environment-scoped tools stable namespaces derived from their environment.
- Include `environment_id` in scoped resource listings and accept it in resource requests. Require it for environment-owned servers when multiple environments are selected.
- Preserve server ownership through hooks and use the owning environment's permissions for scoped elicitation review.
## Testing
Add coverage for same-named servers across environments, independent calls and approvals, resource selection, plugin discovery, and rejection of hook changes to the tool environment.
GitOrigin-RevId: 5593372b06a15c16aa3220faa3b19f5d3b20e67e
## What changed
- Replace free-form `AgentMessageDisplay` actions with a version `1` contract using `show`, `hide`, and `block` modes, with typed annotations, replacements, block reasons, and trusted-contact handling.
- Discard invalid or unsupported display instructions and set `moderated` to `true` when reading moderation data in Rust and the Python SDK.
- Update generated JSON schemas, TypeScript types, and Python SDK models to match the contract.
## Testing
Add coverage for display variants, tolerance of extra fields, and unsupported-version or unknown-mode fallback. Update the final-answer moderation test and add Python coverage for thread history and item notifications.
GitOrigin-RevId: ec64070002da67e8e377dccb3728806ac8b290e7
## What changed
- Add the stable `incremental_tools_legacy_gcp` feature, enabled by default, to control incremental tool declarations on regular GCP Responses independently of Amazon Bedrock.
- Mark `incremental_tools_legacy` stable and keep it disabled by default for Amazon Bedrock.
- Expose the new flag in the configuration schema.
## Testing
Update integration coverage for GCP defaults and opt-out, independent provider flags, and incremental tool declarations during remote compaction.
GitOrigin-RevId: 7acf085789d44122fd2a5da97932a8b9e93e240e
## Why
Requests that exceed the server's advertised WebSocket message size limit can fall back to HTTP without first uploading the oversized message.
## What changed
Read `x-codex-websocket-max-message-bytes` from the handshake response and check the serialized request's byte length before sending. Route oversized requests through the existing HTTP fallback. Ignore missing or invalid limits, and remove the close-code-specific wording from the size-limit error.
## Testing
Add a fallback test that advertises a one-byte limit and verifies zero WebSocket generation requests and one HTTP request.
GitOrigin-RevId: 03b42012ca77d6b046e937fef8e6335d855a1c10
## Why
A WebSocket close with code `1009` before any text arrives indicates that the request exceeds the peer's message size limit. Retrying the request over another WebSocket does not address that limit.
## What changed
- Classify these early size rejections as requiring HTTP fallback and switch transports without exhausting WebSocket retries, including during prewarming.
- Preserve ordinary stream retry behavior for size closes after any text frame and for other close codes.
## Testing
Add integration coverage for early size rejections during generation and prewarming, size closes after metadata, rate limits, or response creation, and ordinary closes.
GitOrigin-RevId: 4550d289bb414fec1faae2a195bcc635d394117b
## Why
A subagent can use a different model from its parent, with different supported access programs. Saved Daybreak choices need to resolve against the subagent's model and remain consistent throughout its turn, including compaction.
## What changed
- Resolve saved choices before native subagent turns start, preserving explicit turn overrides and applying saved toggles on later turns.
- Distinguish inherited parent programs from explicit child selections. Adapt inherited Daybreak Blue/Red selections to the child model while retaining the saved choice as the default for later turns and nested subagents.
- Validate the account associated with automatic selections and reject incompatible saved choices before sending model requests, while retaining rejected user input in conversation history.
- Require model changes to wait until the next turn when a saved Daybreak choice is present.
## Testing
Add coverage for both multi-agent spawn versions, model-specific selection, automatic compaction, WebSocket response reuse, account changes, unsupported choices, and rejected-input persistence across resume.
GitOrigin-RevId: 11971138d656600d9878187225e4d33217e68ad4
## What changed
Carry `ContextWindowId` through session metadata, compaction checkpoints, rollout recording, and thread creation instead of converting IDs to strings. Add deserialization and JSON schema support while preserving the serialized string format and legacy numeric compaction IDs.
Validate deserialized IDs as UUIDv7 values before restoring context windows, preserving the existing handling of unsupported IDs.
GitOrigin-RevId: fda329d0654f438171a955c9f75550817c32c047
## Why
Converting message content to tool output previously reduced file-backed audio to a text file ID, losing its audio type.
## What changed
- Allow `input_audio` tool output items to carry either `audio_url` or `file_id`, preserving both forms during content conversion.
- Account for file-backed tool audio in history estimates and output truncation, and prepare only inline audio data.
- Reject uploaded audio in raw function and custom tool output injection, extending the existing requirement to submit uploaded audio through typed turn input.
- Regenerate app-server schemas and TypeScript/Python types while preserving the Python inline audio class name.
## Testing
Add coverage for tool audio wire-format round trips, repeated file audio sharing text and audio output budgets, and rejection of raw uploaded audio injection across messages and tool outputs. Extend Python SDK coverage for the inline tool audio shape.
GitOrigin-RevId: f4704466e6151662d2c8b8dc3f5ca2ab2f5710a2
## Why
MCP config refreshes previously retained session app overrides, leaving connector approval changes unapplied in existing sessions.
## What changed
- Refresh explicit session `apps` overrides alongside `plugins`, allowing updated link approval settings to take effect on the next turn.
- Preserve overrides for omitted sections and restore inheritance when a section is an empty table.
- Validate app overrides and the effective app configuration, rejecting refreshes that expose invalid inherited settings.
## Testing
Add coverage for independent and combined app/plugin updates, clearing overrides, and rejecting invalid inherited app settings. Add an integration test verifying that changing a link's approval mode from `approve` to `prompt` requests approval before executing the next turn's tool call.
GitOrigin-RevId: 3fa36744a9ccd9e735e4cda7f061ccff1cf2a269
## Why
Background plugin cache refreshes fetched recommendations even when plugin recommendations were disabled.
## What changed
Pass the effective recommendation feature state into `PluginsConfigInput` and skip recommendation cache warming unless apps, plugins, and either `tool_suggest` or `recommended_plugins` are enabled. Installed-plugin cache refreshes continue independently.
Disable `tool_suggest` and `recommended_plugins` by default in core and app-server test helpers, with explicit overrides for recommendation tests.
## Testing
Update cache-warming and external-login recommendation tests to opt in explicitly. Update config RPC assertions to verify the test helpers' session flag overrides.
GitOrigin-RevId: dc04e2847c94e2b15842fcd95cc0cf1f104e1fac
## Why
Code Mode needs a way to forward mixed MCP tool results while preserving their content types and order.
## What changed
Add `content(block)` and `content(iterable)` so callers can forward tool output with `content(result.content)`. Text, image, and audio blocks become their corresponding output items; resource links and embedded resources are serialized as text. Invalid blocks and encrypted text are rejected, and iterators are closed when a block is rejected.
Share MCP block conversion and image detail types with the protocol layer, while preserving existing `image()` and `audio()` input handling.
## Testing
Add coverage for mixed content ordering, iterator behavior and cleanup, invalid blocks, image metadata, short audio clips, and output suppression after exit. Add an integration scenario verifying that MCP text and image blocks reach the model in order.
GitOrigin-RevId: 83832ec6c530dd35ea1e3373680627997c6e13c1
## Why
Remote commands can use workspace paths from a different operating system. Preparing them on the client should preserve those paths and command arguments for the execution host.
## What changed
- Build exec-server requests directly, carrying the native command and sandbox context without applying the client's sandbox transform.
- Resolve workspace permissions and runtime read access in `SandboxManager` on the execution host, including helper binaries and validated managed-network CA bundles.
- Add explicit backend selection and required platform sandbox selection, rejecting launches when the required sandbox is unavailable.
## Testing
Extend request tests to cover foreign workspace paths, Unicode arguments, and empty arguments. Extend the remote process test on Unix to verify that restricted reads allow the sandbox helper and validated CA bundle while denying an untrusted certificate file.
GitOrigin-RevId: 5fc02ac4208912ecefb80a212742389afc14ac05
## Why
When a workspace has an unreadable ancestor, PowerShell can start with `$PWD` unset and its filesystem drive at the root, breaking relative paths.
## What changed
Prefix PowerShell commands in the MXC sandbox with a guarded workaround that restores the location from the process working directory when `$PWD` is unset. Preserve locations already initialized by startup or a profile.
## Testing
Extend the MXC PowerShell integration test to cover an unreadable ancestor, checking that `$PWD` matches the process working directory, relative file access works, and the parent and sibling file remain inaccessible.
GitOrigin-RevId: 4fb067db52a7f3c6e819169016fe6bd104a277a1
## Why
User-configured model catalogs can supply Guardian prompt templates that omit policy slots or add conflicting instructions. Managed rules need a trusted template to reach the reviewer.
## What changed
- Use the bundled Guardian policy template when managed policy or additional rules are present, while preserving explicit host-provided templates.
- Remove `auto_review.extra_policy` and `auto_review.experimental_policy_template` from configuration and the schema. Warn when they are used, directing additional rules to `guardian_extra_policy` in managed `requirements.toml`.
## Testing
Add regression coverage for managed rules with user-supplied catalog templates, explicit host templates, and migration warnings for the removed settings.
GitOrigin-RevId: 7f00bfaa85051272ed70ceb2fcb64ffc297b8755
## Why
Waiting for host acceptance of a service-tier update in the submission loop can block interrupts while the host receipt is pending.
## What changed
Move the host acceptance wait out of the submission loop while keeping explicit thread settings replies pending until acceptance completes. Report handoff failures to the caller while preserving the locally committed settings, and allow a subsequent explicit request for the same tier to retry a failed handoff.
## Testing
Add a WebSocket regression test covering interrupts with pending host receipts, failure reporting, same-tier retries, and continued thread operation after startup caller cancellation.
GitOrigin-RevId: 1b27d156eba3ebb47e717a987f41f4f595635be8
## Why
Holding the session MCP gate during `tools/list` blocks other runtime access. Releasing it requires preventing stale refresh results from publishing after configuration or authentication changes.
## What changed
- Capture the Apps client under the session gate, then release the gate before fetching tools.
- Validate runtime and authentication state before publishing the shared cache and client catalog; retry a superseded refresh once.
- Wait for in-flight Apps refreshes before capturing model tools, preparing Apps calls, or shutting down the runtime.
## Testing
Add regression coverage for stale refreshes after runtime invalidation or logout, publication validation after call preparation drains, and a model step that waits for refreshed Apps tools while MCP status queries remain available.
GitOrigin-RevId: 42d4be8c4a9218933f8e3d07fc7f32f2da9cbd9d
## Why
MCP tools marked with `readOnlyHint: true` could still require approval in automatic mode when `destructiveHint` was also true.
## What changed
Give `readOnlyHint` precedence over `destructiveHint` and `openWorldHint` when deciding whether annotations require approval. Explicit prompt mode and strict automatic review continue to require their respective approval checks.
## Testing
Update unit tests for conflicting annotations, prompt mode, and strict automatic review. Extend app integration coverage to verify that read-only calls proceed while writes prompt in both automatic and writes approval modes.
GitOrigin-RevId: 11a930b857886bf41d09fd54c3a38607ae3d1b4e
## What changed
Allow GCP Responses requests to use `incremental_tools_legacy`. When enabled, tool declarations are sent through `additional_tools` inputs instead of the top-level `tools` array.
## Testing
Extend Vertex request coverage to check incremental tool declarations, including namespaces, tool search, and `exec_command`. Add GCP cases to the scenario that verifies tool catalog updates are appended without rewriting history, with incremental tools enabled and disabled.
GitOrigin-RevId: 8f4c02f8d62575e24e695d6fae0472a09625409f
ioanbudea-OAI