## What changed
- Instrument MCP OAuth loads, saves, deletes, fallback cleanup, and refresh persistence with credential-free storage metrics, distinguishing configured policy from operations on a pinned store.
- Retain the originating client across background tasks, blocking storage operations, and session recovery, including recovery after startup found no credentials.
- Preserve typed keyring and lock error categories for metrics and remove raw error details from storage warnings.
## Testing
Add tests for policy and pinned-store outcomes, best-effort cleanup failures, wrapped lock errors, and successful or failed refresh persistence without duplicate observations. Add recovery tests that verify client attribution after anonymous startup and across threads with different originators.
GitOrigin-RevId: 5ea4528bcdcf500c8ffdf1d9c7008ea52112c726
## Why
Successful file fallback can hide a secure-store failure. Storage diagnostics need to distinguish that fallback from explicit file storage while keeping credential values out of error output.
## What changed
- Record credential load, save, delete, and fallback-file cleanup outcomes, including secure-store failures and fallback reasons.
- Preserve the initiating client's attribution across app-server requests, login tasks, sessions, turns, and blocking token persistence.
- Preserve storage error context and typed causes while redacting credential JSON data errors and payload-bearing keyring errors.
- Include sanitized fallback completion warnings in the default `codex login` file logs.
## Testing
Add coverage for storage policy and metric attribution, credential redaction, login diagnostics, concurrent app-server clients, device-code login, and token refresh during a turn.
GitOrigin-RevId: 6d5651c1718d184016fa77befa02aa528750b2ae
## What changed
- Carry the selected shell and login mode through unified exec using `ShellInvocation`. Use this metadata for shell snapshots and credential brokerage instead of inferring it from command arguments.
- Add `prependPathDirs` to exec-server environment metadata, populated from the executor's package PATH directory. Default to an empty list for older servers and omit empty lists from serialized output.
## Testing
Extend environment metadata round-trip coverage for `prependPathDirs` and the remote exec-server integration test to verify the packaged `codex-path` directory is reported.
GitOrigin-RevId: c571c068effcb305d196a701ad9a335ec7a3f5a2
## Why
Denied-read policies previously kept explicitly approved commands within their original filesystem restrictions, preventing operations that need broader write access, such as updating Git metadata.
## What changed
- Apply broader filesystem permissions after approval of explicit escalation while retaining the sandbox, denied reads, and network policy. Command allow rules alone do not widen filesystem access.
- Reject escalation when the required local sandbox is unavailable or a remote exec server lacks support for preserving the restrictions.
- Track escalated terminal access so subsequent `write_stdin` calls still require review when stdin approval is enabled.
## Testing
Add coverage for approved and denied escalation, allow rules, remote server compatibility, and stdin approval before input delivery. Add a Windows integration test verifying that an approved `git pull` updates Git metadata while exact-path and glob-based read denials remain enforced. Serialize Windows sandbox integration tests across processes to protect shared test account credentials.
GitOrigin-RevId: 5dce6d41487ee4d39bd795c8d086398ab9794d5b
## Why
A subagent stopped by repeated Guardian denials remained interrupted without notifying its parent. The parent needs guidance to report the stop and wait for explicit user confirmation before continuing the blocked work.
## What changed
Forward `TooManyDenials` interruptions from `MultiAgentV2` children to their parents with Guardian-specific guidance to inform the user and avoid resuming or retrying until the user explicitly confirms. Preserve the child's `Interrupted` status and keep ordinary interruptions silent.
## Testing
Add integration coverage for parent notifications under `CircuitBreakAction::Strict`, silence under `CircuitBreakAction::Default`, and preservation of the child's interrupted status. Add a unit test ensuring long denial messages stay within the notification token limit while retaining the guidance.
GitOrigin-RevId: c9bb90827393068d9c92edaf0443a52e6ff57f9f
## Why
Guardian review and classification telemetry lacks the context mode needed to distinguish `legacy`, `independent`, and `thread_owned` reviews.
## What changed
- Add `guardian_context_mode` to review and classification analytics and `context_mode` to their metrics.
- Capture the mode from the conversation history snapshot before review preparation or classification setup so failure metrics retain it, including when review preparation or reviewer startup fails.
- Use `unknown` for review metric tags when no context mode is available.
## Testing
Update metric assertions to cover `thread_owned` classification tags and the `unknown` review fallback.
GitOrigin-RevId: 79f7d11b3e4ccfc53681890d75fbc7c54e1ce7de
## Why
Stale thread capability roots can reconnect executors that are not selected for the current turn and shadow selected roots with the same ID.
## What changed
Filter out roots whose environments are absent from the turn snapshot before deduplication and readiness resolution. Update app-server capability tests to explicitly select the executor environments used by each turn, including after resume.
## Testing
Add regression coverage for full-access and workspace-write permissions, verifying that stale roots never connect an unselected executor, selected roots with matching IDs remain available, and turns with no environments expose no roots.
GitOrigin-RevId: afe375047cc5e8aad06df83334149510460dcdcc
## Why
Reloads can reject a valid thread configuration when the host configuration references a missing model provider that thread overrides replace. Concurrent cloud refreshes can also leave older policy snapshots or staged cache writes eligible for publication.
## What changed
- Compose preserved session layers before materializing refreshed configuration, retaining source-aware validation errors.
- Carry cloud policy revision bindings through config loading and role overrides. Reject stale MCP refreshes and disable enterprise MCP authorization when the policy is suspended. Retire the old policy when replacing or clearing its loader.
- Stage cloud cache writes in temporary files and publish them atomically only while their policy revision remains current.
- Route file reloads through the shared runtime refresh path, resolve paths relative to each config file, and preserve session settings. Restore host defaults for `secret_auth_storage` and `mcp_oauth_refresh_coordination` when explicit overrides are removed.
## Testing
Add regressions for thread-provided model providers, managed plugin and feature requirement refreshes, stale and suspended policy snapshots, superseded and retired cache writes, and file reloads preserving runtime settings and restoring feature defaults.
GitOrigin-RevId: 3280a2445eeb7074a142f720690bb0e4f01d174b
## What changed
Add `features.multi_agent_v2.message_board_remote` with a board URL and a bearer token supplied directly or through an environment variable. When configured, use the remote board in preference to local or in-memory storage, including in ephemeral sessions, while preserving the existing board tools and session identity.
Ignore remote board settings in project-local configuration and use the runtime HTTP client and clock for remote requests.
## Testing
Add a mock-server integration test and snapshot covering an ephemeral session posting through the existing tool, with the expected bearer authentication, session identity, timestamp, and returned post.
GitOrigin-RevId: 263413d90a1ee4c0bdba8c1b08ba9f68bdd7a986
## Why
Steering and recovery requests can have different traces from the turn they join. Sampling can also finish while tools remain in flight. Tracing needs to preserve that correlation and distinguish sampling time from time spent waiting for tools.
## What changed
- Add `codex.turn_input` spans with `conversation.id` and the accepted `turn.id` for started, steered, and recovered turns.
- Add sampling, tool-blocking, and automatic and manual compaction spans with `codex.turn.phase` and conversation and turn IDs. End the sampling span before draining outstanding tools.
- Emit a `codex.mailbox_preemption` event when pending mailbox input preempts sampling.
## Testing
Add integration coverage for cross-trace steering and recovery, sampling and tool-blocking boundaries through a blocked dynamic tool, and completion or interruption. Extend mailbox preemption tests to check event emission with preemption enabled or deferred.
GitOrigin-RevId: 59893c2d463c02cbd05f5c332e5afc2351cc8b62
## Why
Configuration reloads must honor current managed restrictions without granting new enterprise MCP authority to existing sessions or overwriting newer configuration with stale snapshots.
## What changed
- Allow enterprise managed authentication only for configured MCP servers. Remove plugin `ema_auth` overlays from the schema and disable servers that still use them.
- Refresh ordinary MCP settings while preserving session settings and initially admitted enterprise registrations. Disable enterprise MCP when its registration changes, policy revokes access, or configuration loading or resolution fails; require a new session to restore enterprise authority.
- Publish refreshes only when their captured configuration is still current, with bounded retries in app-server reloads. Preserve updated managed restrictions even when a refresh is rejected.
- Finish processing other thread refreshes before `config/mcpServer/reload` reports a rejection, and document that an error can accompany partially applied changes.
## Testing
Add regression coverage for stale refreshes, bounded retries, managed-policy revocation, persistent enterprise disablement, ordinary MCP transport changes, and rejection of plugin enterprise authentication. Verify that denied enterprise servers receive no requests.
GitOrigin-RevId: 34429cd339c1ec152a2ee8697cb29f0cff5d9e5f
## Why
Background helpers launched from a detached Windows process can allocate console windows. Job Object launches and containment fallbacks need to preserve console suppression as well.
## What changed
- Add `codex_utils_process::background_command` to set `CREATE_NO_WINDOW` on Windows, and use it across background subprocess launches, including Git, plugins, authentication, diagnostics, and sandbox helpers.
- Centralize console suppression in Job Object launches. Keep `CREATE_NO_WINDOW` when retrying without containment, and clear `CREATE_SUSPENDED` so the fallback child can run.
- Preserve console inheritance for interactive shell launches and interactive AWS authentication refreshes.
## Testing
Add Windows regression tests covering console-free launches from detached parents through standard and Tokio commands, stdout/stderr capture, successful containment, Job Object creation and assignment failures, and sandbox setup refresh helpers.
GitOrigin-RevId: b2c238fa7d4f9fbd868e5adf7d4be9958ff01e6c
## Why
Turn error hooks receive only a `CodexErrorInfo` category, which omits backend metadata such as usage-limit reset times and rate-limit snapshots.
## What changed
Add borrowed `CodexErrorDetails` to `TurnErrorInput` and pass the original details through turn and compaction error notifications, alongside the existing error category.
## Testing
Add coverage for usage-limit metadata during sampling, manual compaction, and post-turn compaction, including preservation of completed answers and existing error events. Extend lifecycle tests to verify that an `InvalidImageRequest` retains its details when surfaced as `BadRequest`.
GitOrigin-RevId: 6f2058992126da0f69508ef51998e7581557deea
## Why
Providers with `model_catalog_url` could advertise bundled models absent from their catalog or reuse stale models after a failed refresh. Model metadata could also match by prefix or namespaced suffix instead of the provider's exact model ID.
## What changed
- Suppress bundled model fallback and merging for explicit provider catalogs, including when discovery is disabled.
- Require unique, non-empty catalog slugs and match metadata by exact model ID.
- Serialize explicit catalog refreshes and invalidate in-memory and persisted catalog entries after fetch failures, preventing stale cache reuse.
- Report a clear configuration error when startup has no available model, while allowing an explicitly configured `model`.
## Testing
Add regression coverage for exact model matching, hidden catalog entries, cache invalidation across restart and recovery, invalid slugs, and empty-catalog startup with and without an explicit model. Update app-server model-list expectations and verify the TUI configuration error.
GitOrigin-RevId: ac323a94178e3c48df8d4a159a86fdbac20b03a2
## What changed
Move content-filter guidance recording from the sampling loop into
`handle_response_stream_error`. Pass `StepContext` so the handler can resolve
model-specific guidance and record it before retry decisions for sampling
requests. Keep remote compaction excluded from guidance recording and update
callers and the existing retry-deadline test to use the new signature.
GitOrigin-RevId: 030bde1d4f1597fc4f3971ad837478e5304c5aa9
## Why
Responses stopped by `content_filter` previously followed generic stream-error retry handling without guidance about the block. Retried requests need instructions to explain the limitation and offer a permitted alternative.
## What changed
- Recognize content-filter failures as a distinct error while preserving retryability and the existing public error representation.
- Append developer guidance to the conversation after each sampling block, retaining delivered output and using the existing retry handling.
- Support a model catalog override through `model_messages.content_filter_guidance`. Missing, null, blank, or values exceeding 512 UTF-8 bytes fall back to bundled guidance.
- The bundled guidance tells the model to avoid reproducing or working around blocked content, briefly explain the limitation, offer a permitted alternative, and continue unrelated authorized work.
## Testing
Add a scenario and request-history snapshot covering repeated blocks, catalog guidance on each retry, retained partial output, and eventual completion. Add error-mapping assertions for retryability, public error classification, and error text.
GitOrigin-RevId: ba0c201b3a5a3acf5cfa971332027240e0690225
## Why
Sessions can share an analytics client while using different product SKUs. Analytics requests need per-thread attribution to reflect each session's configuration.
## What changed
- Register each thread's `apps_mcp_product_sku` and send `X-OpenAI-Product-Sku` on analytics requests grouped by product, without changing authentication.
- Send product groups concurrently while preserving event order within each group.
- Flush buffered tool events before changing or evicting their product attribution, and clear attribution when a session disables analytics.
- Bound retained thread registrations and concurrent product groups. Drop attribution when registration cannot be queued or a batch exceeds the product-group limit.
## Testing
Add tests for shared-session attribution, clearing attribution on resume with analytics disabled, buffered events across product changes, queue overflow recovery, registry limits, and concurrent delivery with preserved event order.
GitOrigin-RevId: 25a98788cd44d4a85f97ee87aadf3a6909607f6a
## Why
Usage-limit failures during manual or post-turn compaction did not notify turn lifecycle extensions, leaving them unable to react to these errors.
## What changed
Emit the turn error lifecycle notification for `UsageLimitExceeded` in both compaction paths. Preserve the completed answer after post-turn compaction fails, and avoid duplicating the error already emitted by manual compaction.
GitOrigin-RevId: f31155e5991d762a0779030921aedbd1f818cfbb
## Why
An offline secondary executor can stall Guardian approval revalidation while diff display setup searches for Git roots, even when the review concerns another executor.
## What changed
Use each environment's working directory as the diff display root for Guardian sessions, regardless of `CwdRelativeTurnDiffs`, so this setup does not wait for remote Git discovery.
## Testing
Add a regression test that withdraws authorization during a pending approval and disconnects an unrelated secondary executor. Verify that Guardian retries with the updated authorization and denies the request.
GitOrigin-RevId: 3661759119935c68539e9eab8df2e862987d0d92
## Why
Spawning a subagent before an environment was ready dropped the starting environment from the child's selections. The child needs to retain that environment and receive its configuration or failure when preparation finishes.
## What changed
- Pass the spawning step's environment snapshot to children, preserving ready and starting environments and configuration ownership.
- Propagate the original owner's first configuration result through descendants, applying each session's validation and leaving independently configured children unchanged.
- Preserve pending configuration waits across executor retries. Later owner updates do not overwrite the child's inherited configuration.
## Testing
Add regression coverage for fresh and forked subagents, readiness through turn-settings updates, failure propagation to children and grandchildren, child configuration precedence, and executor retries. Add a request snapshot showing a child using `wait_for_environment` before execution tools become available.
GitOrigin-RevId: a2afed740391f88d195596cfe28e418332b60d43
## What changed
Add the disabled-by-default `guardian_root_handoff_context` feature to select worker-specific root evidence for Guardian reviews. Use recorded `spawn_agent`, `send_message`, and `followup_task` calls targeting a worker or its ancestors to select the three preceding root messages per handoff, plus the three latest root messages so recent cancellations remain visible before another handoff.
Preserve verified tool answers and evidence without known ordering, and retain the existing shared message cap. Fall back to the existing root context when no usable handoff window remains or the latest authorization message is a heartbeat. Update the review context revision when the selection changes.
## Testing
Add a delegation scenario and Guardian request snapshot covering ancestor handoffs, separate worker branches, cancellation visibility, and fallback after compaction removes handoff calls. Extend heartbeat coverage to exercise the new feature and verify that the latest turn's trusted skills are retained.
GitOrigin-RevId: 87dc39158f78b2b7e9f4f2e4afc653257ea12025
## Why
Guardian transcripts omitted encrypted agent messages, leaving reviews without evidence such as encrypted parent replies.
## What changed
- Carry encrypted `agent_message` items through synchronous reviews and asynchronous scoring, preserving their order, author, recipient, and ciphertext.
- Account for native messages in context budgets and omit them whole with an explicit notice when limits require it.
- Support mixed text and native messages during review admission while retaining user-content annotations.
## Testing
Add coverage for transcript ordering and budget eviction in both reviewer profiles, plus a mocked scenario verifying that an encrypted parent reply appears exactly once in each of two incremental Guardian reviews.
GitOrigin-RevId: abc2f1ce5accd83beb06f799ef9ed9d7fa2cd90a
## Why
The transcript supplied to Guardian may omit earlier user instructions, restrictions, or revoked permissions. History retrieval lets the reviewer check relevant authorization before approving actions with side effects.
## What changed
- Add the disabled-by-default `guardian_conversation_history_tools` feature. With Apps enabled, expose `user_message.search_messages` and `user_message.read_messages` through the parent's live Apps connection and conversation identity.
- Recheck the parent's current app and tool policy on each call, rejecting disabled tools and calls requiring approval.
- Add retrieval instructions that distinguish user authorization from assistant context and account for later revocations and incomplete results. Allow overrides through `auto_review.experimental_conversation_history_prompt`.
- Limit history responses to an estimated 4,000 tokens by default, configurable through `auto_review.conversation_history_max_output_tokens`, while preserving stricter parent and reviewer limits.
- Allow explicit extension registries for isolated sessions and prevent those sessions from inheriting the implicit Apps connection.
## Testing
Add scenarios covering history tool exposure, parent connection and identity reuse, custom prompts, output truncation, stricter reviewer budgets, and live permission changes on a reused reviewer. Extend configuration coverage for blank prompt overrides.
GitOrigin-RevId: 055a69b113c8548bd58e7d5618ea026ba6d1ffb1
## Why
Microsoft Store PowerShell cannot run under MXC. The existing fallback to an unpackaged PowerShell executable only applied to the elevated Windows sandbox.
## What changed
Extend local PowerShell fallback discovery to MXC in `unified_exec`, using the executor's Windows sandbox selection. Keep discovery local and automatic `-NoProfile` insertion specific to the elevated sandbox. Skip this preparation for non-Windows target paths.
## Testing
Extend command-preparation tests to cover MXC and add a Windows integration test that replaces a Store PowerShell path before launch, writes a file successfully, and verifies `windows_mxc` sandbox metadata.
GitOrigin-RevId: 6c581396525a8fec7e1fb538b3e63b0de2ddb926
## Why
Message-board notifications delivered as ordinary injected input could cause an agent to sample again after its final answer.
## What changed
Route notifications through the current turn's mailbox as `InterAgentCommunication`, checking atomically that the turn is running and still accepts mailbox delivery. Skip notifications when delivery is closed. Accepted notifications may remain in conversation history for a later turn without reopening the finalized answer or starting a new turn.
Report pending inter-agent communications as mailbox activity, while preserving priority for steering input.
## Testing
Add regression scenarios for notifications arriving before and after finalization, asserting no extra sampling and the expected notification presence in the next turn. Extend input-queue coverage to recognize already-pending mailbox activity.
GitOrigin-RevId: 41d786041b4eccc5ccf926f2f190473676a3ac2f
## What changed
- Give tool fragment sizes and namespace counts logarithmic boundaries through 32,768.
- Give enabled and kept skill counts integer boundaries from 0 through 512, removed description characters logarithmic boundaries through 131,072, and skill truncation flags boundaries at 0 and 1.
- Record these metrics with explicit boundaries, separating zero values and retaining overflow buckets above each range.
## Testing
Extend tool and skill metric tests to assert explicit boundaries. Add an export test covering zero, one, the upper boundary, and overflow, including bucket counts, ordering, and sample totals.
GitOrigin-RevId: 9fbf3acbe352d7c74f3ad11f0b690148c083a6ef
## What changed
- Add `CodexThread::prewarm_with_history()` to prepare a WebSocket response with existing conversation history and executed-tool metadata using `generate: false`. The next turn can reuse the prepared response when its prompt extends that history and request settings match.
- Keep startup prewarming and `prewarm()` on the existing empty-input path, and skip preparation when the cached WebSocket is ready.
- Label prewarm telemetry by input mode and WebSocket continuation metrics with `after_prewarm`.
- Rename `persistent_mode_enabled` to `persistent_execution_enabled` without changing its behavior.
## Testing
Extend WebSocket coverage to check history preservation during reconnect prewarming, reuse of the prepared response on the next turn, and omission of `previous_response_id` for a non-prefix prompt.
GitOrigin-RevId: c7731541b11b2e6668027a47f37f696213268c66
## Why
Guardian denial-limit interruptions lack a structured error identifying the cause. Make this opt-in because older clients may not recognize the new error in shared history.
## What changed
- Add `auto_review.circuit_break_action = "strict"` to attach `TooManyDenials` to the interrupted turn. The default leaves the error unset.
- Expose `turn.error.codexErrorInfo = "tooManyDenials"` in app-server notifications and saved history, and update protocol schemas and generated types.
- Preserve the warning, denial limit, and interrupted status without emitting a separate error notification.
## Testing
Add an integration test covering omitted, `default`, and `strict` settings, checking warnings, live turn errors, the absence of separate error notifications, and persisted turn errors after restart.
GitOrigin-RevId: cb5d379e64728d4d7b9daf834c13756e4a70db31
## Why
Inspecting one MCP server should not require full-inventory discovery or a separate connection when a thread already has one.
## What changed
- Add optional `serverName` to `mcpServerStatus/list` and update generated schemas and bindings.
- With `threadId`, apply any pending runtime refresh and reuse the thread's current connection and tool catalog, waiting only for the selected server during discovery.
- Without `threadId`, create a discovery connection for only the selected server. Unknown names return an empty page; omitting `serverName` preserves full-inventory discovery.
## Testing
Add a regression test covering both status detail modes, checking that tool metadata is preserved and that status reads do not repeat `initialize` or `tools/list` requests.
GitOrigin-RevId: 1b361b67a993ab45cae493e88c146f50cfaf753a
## Why
Guardian reviews need to retain original evidence across parent compaction when checkpoint reuse is disabled, including after resume and rollback.
## What changed
- Make disabling `guardian_reuse_parent_compaction` select a bounded, independent review transcript while preserving thread-owned authorization.
- Keep synchronous reviews and asynchronous scoring independent of parent checkpoints, and allow reviewer sessions to continue using transcript deltas across parent compaction.
- Persist transcript entries with rollback provenance while remaining compatible with older checkpoint readers and metadata-free checkpoints.
- Exclude compaction output from the transcript and synthetic summaries from rollback turn boundaries. Use acceptance ordering to remove rolled-back evidence even when persistence order differs.
## Testing
Add regression coverage for reviewer continuity, evidence retention across compaction and resume, rollback after local and remote compaction, and checkpoint serialization compatibility.
GitOrigin-RevId: fea0852cc5537372854f4a34bacb6bfda6d13e88
## Why
Defaulting missing or unsupported display preferences to `inline` prevents clients from applying resource display defaults.
## What changed
Populate `mcpAppUi` only when a tool descriptor has a resource URI and an explicit `inline` or `fullscreen` preference. Preserve `mcpAppResourceUri` independently in tool-call events, including when `mcpAppUi` is unset, and document the behavior.
## Testing
Update integration coverage for explicit display modes, missing and unsupported preferences, and legacy resource URIs, checking tool-call events and resumed history.
GitOrigin-RevId: 4876cced068d8e464adeb265abd053d8abe667ce
## Why
Guardian needs the assistant's delivered question to interpret a user's reply. Messages sent through nested Code Mode tools must remain available as review context, and approvals based on earlier context must become stale when a new delivery is confirmed. Assistant messages do not themselves grant authorization.
## What changed
- Capture successful hosted User Messaging sends after input rewriting and before result callbacks or post-tool hooks.
- Retain bounded delivery text in acceptance order, persist it through cancellation and shutdown, and preserve it across compaction and resume with an older-client-compatible rollout encoding.
- Track assistant review context separately from user authorization, invalidating pending and cached approvals for both local and worker reviews when that context changes.
- Associate retained deliveries with the correct instruction or communication boundary during rollback.
## Testing
Add coverage for nested messaging review context, fast replies and communication ordering, shutdown persistence, stale local and worker approvals, rollout compatibility, and rollback retention.
GitOrigin-RevId: 1bc1ec9e8947560b99f4b39a42ddb9f2099f519b
Stop logging response headers on successful WebSocket connections and payload
previews for tool calls. Keep the connection URL, tool name, and thread ID in
their respective log entries.
GitOrigin-RevId: 1d410b6aef8f12153da9bfc60c515b8e797a9de0
## What changed
Remove automatic next-message generation after successful turns, suggestion rendering in the composer, and the associated Tab acceptance and Escape dismissal handling. Remove the `tui.prompt_suggestions` configuration option and its schema entry, along with suggestion-specific tests and snapshots.
GitOrigin-RevId: 63bf6f2ca85da6ece502c86e2a805d000bf34210
## What changed
Add `Features::persistent_mode_enabled` and use it for persistent instructions and current-time reminder defaults. Enablement still requires `ReasoningEffort::Persistent`.
Change `PersistentModeState::new` to accept an explicit enablement boolean, separating instruction rendering from reasoning-effort selection.
## Testing
Update persistent-context tests to use boolean enablement while preserving coverage for instruction replacement, removal, deduplication, and retained history without a snapshot.
GitOrigin-RevId: f412b90d783438d1526956a56c11b9e66385ee0e
## Why
Long descriptions could exhaust the 4 KiB tool summary budget and hide later namespace names, limiting their visibility for tool discovery.
## What changed
- Reserve space for all namespace names before sharing the remaining budget across descriptions, including added and removed groups.
- Truncate descriptions at UTF-8 boundaries with `...`, including at the existing 250-character cap. Omit whole namespaces only when names alone exceed the budget, reserving omission notices only in that case.
- Render namespace names and descriptions without XML escaping.
## Testing
Add unit and snapshot coverage for description allocation, Unicode boundaries, namespace omissions, and empty-state notices. Add a scenario verifying that a crowded catalog retains every namespace name, allows discovery of a late namespace with its full description, and keeps the summary unchanged on follow-up.
GitOrigin-RevId: 9743cda5aa14190db22c788c9e91e1785a32682b
## Why
Private IP destinations always bypassed inherited upstream proxies, preventing their use for private networks reachable through an upstream VPN proxy.
## What changed
- Add `codex exec-server --proxy-private-ips-via-upstream`, also configurable with `CODEX_EXEC_SERVER_PROXY_PRIVATE_IPS_VIA_UPSTREAM=true`. The setting defaults to disabled.
- Allow permitted RFC 1918, carrier-grade NAT, and IPv6 unique-local destinations to use an applicable upstream proxy. Loopback and link-local destinations retain direct routing, and destination access policy still applies.
- Keep connections direct when no valid upstream proxy applies or `allow_upstream_proxy=false`. Errors after selecting an upstream proxy do not trigger a direct retry.
- Rename `ExecServerRuntimePaths` to `ExecServerRuntimeOptions` and carry the routing setting from executor startup into the managed network proxy.
## Testing
Add routing coverage for private address ranges, special-use addresses, and public targets with the option enabled and disabled. Verify that HTTP and CONNECT requests still enforce destination allowlists and denylists, and update the CLI help snapshot.
GitOrigin-RevId: b7c9cc7da0e0f545694a6521b74c9b36b7b92769
## Why
Steering an active WebSocket response previously dropped the connection and
resent the full history. Draining the response preserves the connection and
allows the follow-up request to continue with `previous_response_id`.
## What changed
- Drain WebSocket responses when steering. For models using
`use_responses_lite`, first send `response.interrupt` with
`mode: "discard_partial_items"` once the response ID is available.
- Treat `response.incomplete` with reason `interrupted` as completion with
`end_turn: false`, preserving token usage and allowing the turn to continue.
Other incomplete reasons remain errors.
## Testing
Update the steering integration test to cover completed and discarded reasoning
items, asserting connection reuse, incremental follow-up input, and token usage
from the interrupted response.
GitOrigin-RevId: bc714b713e797cf1a67e3b26ffbf7664cb92eb33
## Why
Changes in executor availability can alter cloud skill catalog rendering under a shared budget and repeat an unchanged executor catalog when it reconnects.
## What changed
- Cap cloud skills at three quarters of the metadata budget initially, leaving the remaining budget and unused cloud allowance for filesystem skills. Reduce the cloud cap only when doing so allows all skill entries to fit; description truncation alone does not trigger rebalancing.
- Persist the allocation across disconnects, compaction, and thread resume. Recompute it when the cloud inventory or total budget changes.
- Emit a short availability update when an unchanged selected-environment catalog returns and its full text remains in history. Reinject the full catalog when that text is missing.
## Testing
Add coverage for allocation stability, catalog and budget changes, omission handling, and full catalog reinjection after compaction and resume. Extend the selected capability stack test to verify reconnection avoids repeating the catalog.
GitOrigin-RevId: 839fe98024e00c4082a46e6a40675e15fd2c16c6
## Why
Destination-only filtering stripped raw tool result metadata and MCP attribution when the built-in OpenAI provider used a custom endpoint.
## What changed
Add a runtime-only `include_internal_metadata` grant to `ModelProviderInfo` and enable it for the built-in OpenAI provider. Apply the provider grant or the existing first-party HTTPS destination check to both HTTP and WebSocket Responses requests.
Keep the grant out of serialized configuration and schemas, and default it to false for providers received through remote configuration. Providers without the grant retain the existing destination filtering.
## Testing
Update HTTP and WebSocket tests to expect metadata at overridden OpenAI endpoints. Cover provider grants, destination filtering, MCP attribution on requests, and the grant's exclusion from TOML serialization and configuration.
GitOrigin-RevId: 53aad6fb4d52cdfa9c79c6d92fe87383e1d0d1ef
## Why
Compaction using the previous model can inherit the current turn's access program, producing a model/program pair that the server rejects.
## What changed
- Persist `cyber_access_program` in previous-turn settings and restore it during rollout reconstruction.
- Use the previous turn's access program when compacting with its model, preserving an absent program instead of inheriting the current selection.
- Pass the selected access program into local compaction prompts.
## Testing
Add regression coverage for local and remote compaction after model switches, including resume, fork, rollback, and compaction checkpoints. Verify fallback and subsequent sampling use the current model/program pair, and API-key sessions do not inherit access-program authorization.
GitOrigin-RevId: eaa7162e8711446dc9eb1bfff194e711abd54d7e
## Why
When a nested code-mode call's recorded arguments were truncated and attached to an output before its result arrived, the recorder could no longer attach the result metadata to that call.
## What changed
Retain validated call bindings so late result metadata updates the original output across retries and subsequent waits. Keep truncated arguments and incomplete call inventories intact, and apply existing metadata budgets.
Invalidate late metadata bindings when duplicate IDs, reused cells, conflicting outputs, or changed call inventories make attribution ambiguous. Clear stale pending calls when a cell ID is reused, and avoid counting duplicate pending IDs against capacity more than once.
## Testing
Add recorder regression tests for late metadata across retries, compaction, waits, and cell closure, plus ambiguous bindings and budget limits. Add a code-mode integration test that delays a tool result until its truncated call has been recorded and verifies metadata remains attached to the original output across later waits.
GitOrigin-RevId: 7398beaaa1a513147deebdea7aa841513a79d06b
## Why
An execution environment's enabled proxy configuration was reduced to traffic restrictions, leaving restricted commands offline without a controller proxy or an approved network grant.
## What changed
Carry `NetworkProxyConfig.enabled` into `EnvironmentNetworkPolicy.requires_proxy` and honor it when activating managed networking. This lets environment owners require filtered proxy access while direct network access remains restricted. Policies without an explicit proxy requirement retain the existing activation behavior.
## Testing
Extend remote command coverage to check allowed and denied proxy requests without a controller proxy, and verify that direct network access remains blocked.
GitOrigin-RevId: 7cc0063a0d1118de56b1bd30036338cf14360f6a
## Why
AWS profiles can select credential helpers that the application executes. Granting write access to a containing directory should therefore keep `.aws` protected by default.
## What changed
Add `.aws` to the protected metadata paths alongside `.git`, `.agents`, and `.codex`, including workspace roots and additional writable roots. Preserve explicit user rules that override the default protection.
## Testing
Extend policy and sandbox tests to cover `.aws` protection. Add macOS coverage for existing and absent `.aws` directories, deletion and replacement attempts, and symlink targets. Verify that Linux sandbox writes to protected configuration files fail while sibling files remain writable.
GitOrigin-RevId: 31ea287bd0dd9b13aff893783fba9ca3aed0c89d
## Why
Usage limit errors discarded the server-selected window responsible for the limit, leaving turn and compaction analytics unable to distinguish five-hour limits from weekly limits.
## What changed
Preserve optional `limit_window_minutes` from usage limit error responses in `UsageLimitReachedError` and report it as `usage_limit_window_minutes` in turn and compaction events. Accept unsigned integers that fit in `u16`; treat missing, null, malformed, or out-of-range values as unknown. Events for other error kinds report `null`.
## Testing
Add coverage for HTTP and wrapped WebSocket error mapping, analytics serialization and reduction, and app-server propagation to turn and local/remote compaction events. Cases include five-hour and weekly windows, missing or invalid values, and unrelated errors.
GitOrigin-RevId: a32066a007559d91a3c868a756bfd0f976777176
## Why
Threads sharing an executor and sandbox retries can reuse a public process handle while the executor still retains the previous process.
## What changed
Always append a fresh UUID to the exec-server process ID, including requests without sandbox or shell snapshot settings, to avoid collisions when handles are reused.
## Testing
Update the request-parameter test to check the UUID-suffixed format and verify that repeated calls with the same handle produce distinct process IDs.
GitOrigin-RevId: bd1fc9af3e7d5ea99fdf88382df09afa7dc9f72b
## Why
Complete assistant messages with empty text can produce misleading omitted-context notices in Guardian reviews.
## What changed
- Skip complete, empty assistant messages when recording and rendering retained context, while preserving omission notices for incomplete messages.
- Separate retained instruction fragments with blank lines and keep blank lines free of role prefixes, while labeling every nonempty line with its original role.
- Update source-order guidance detection and empty-section deduplication for the added spacing.
## Testing
Extend retained-context tests to cover empty completed messages across resume, restored empty messages, incomplete-message notices, blank-line spacing, and role labeling. Update Guardian prompt snapshots.
GitOrigin-RevId: e945717b18689fa4538d9b617b89a644858ab1c8
## Why
Cached executor MCP declarations must not gain access to host environment credentials when reconnecting to an executor that lacks environment credential resolution.
## What changed
- Retain credential policy through MCP registration, catalog materialization, and runtime setup. Derive selected HTTP plugin policy from the plugin's source environment.
- Reject host bearer-token fallback and transports requiring host environment headers or helpers for executor-owned declarations. Preserve host-configured credential resolution.
- Include credential policy in connection and tool catalog cache identities, and avoid reading host environment values for executor-only identities.
## Testing
Add regression coverage for legacy executors, cached declarations after a capability downgrade, policy preservation through catalog rebuilds, and connection and tool cache isolation.
GitOrigin-RevId: 2d5b85e4e98668c637c538cbe528914c936bd831
## Why
With `instant_interrupt` enabled, new user input should reach the model without waiting for an unfinished response or stream retry backoff.
## What changed
- Interrupt request setup, response streaming, and retry backoff when user input arrives, then continue the turn with the queued input.
- Reset the WebSocket connection and continuation state after preemption so the next request sends full history.
- Drain pending input after a preempted step even when compaction leaves the estimated context above the token limit.
## Testing
Add regression coverage for WebSocket reconnection with full history, interrupted retry backoff, input queued during compaction, and yielding running code-mode calls. Add a streaming scenario that preserves completed commentary while excluding unfinished assistant text from the replacement request.
GitOrigin-RevId: b7e42b6afffbf87da15af05e0850af8579d1353f
Celia Chen