Commit Graph
482 Commits
Author SHA1 Message Date
nhamidi-oai 328e95110c Preserve namespaces on custom tool calls (#30302)
## Summary

- Preserve the optional namespace on custom tool calls during response
deserialization and app-server replay.
- Use the namespaced tool identifier for streaming argument handling and
tool dispatch.
- Regenerate app-server protocol schemas.
- Add regression tests covering namespace serialization and routing.

## Testing

- Ran affected protocol and app-server test suites.
- Ran the full core test suite; two load-sensitive timing tests passed
when rerun individually.
- Ran Clippy and formatting checks.
- Verified with a local end-to-end app-server replay that the namespace
is preserved through the complete request/response flow.
2026-06-27 09:54:56 -07:00
Adam Perry @ OpenAI 3ae0543fdd core: overlap diff root discovery with world state (#30286)
## Why

Remote diff-root discovery is independent of world-state construction,
but it ran afterward and added filesystem metadata latency before the
first model request. Overlap the independent work so thread-cold turns
do not pay those waits serially.

## What

- Run `record_context_updates_and_set_reference_context_item` and
`turn_diff_display_roots` with `tokio::join!`.
- Reuse the same resolved display roots when constructing
`TurnDiffTracker`; no cache or behavior lifecycle changes are
introduced.

## Validation

A synthetic executor-skill benchmark with artificial network delay:
thread-cold model-request p50 improved from about 1.79 s to 1.58 s.
2026-06-26 18:07:41 -07:00
Owen Lin a107b84967 feat(protocol): define missing rollout turn items (#30282)
## Description

This PR adds canonical core `TurnItem` shapes for command execution,
dynamic tool calls, collab agent tool calls, and sub-agent activity, to
be stored in the rollout file soon.

It also teaches app-server protocol / `ThreadHistoryBuilder` how to
render those items, and adds the small legacy fanout helpers needed for
existing event-based consumers. No core producer or rollout persistence
behavior changes here, that will be done in a followup.

## Making ThreadHistoryBuilder stateless

This is the first PR in a stack to make `ThreadHistoryBuilder` stateless
enough that we can materialize app-server `ThreadItem`s from only a
given slice of `RolloutItem` history, without ever needing to replay the
whole thread from the beginning.

The persisted legacy `RolloutItem::EventMsg` records are mostly shaped
like live UI events, not like materialized `ThreadItem`s. They work if
we replay the full rollout in order, but they often do not contain
enough stable identity or complete item state to project an arbitrary
suffix on its own.

A few examples:

- `UserMessageEvent` and `AgentMessageEvent` have content, but
historically do not carry the persisted app-server item ID that should
become the SQLite primary key.
- `AgentReasoningEvent` and `AgentReasoningRawContentEvent` are
fragments. `ThreadHistoryBuilder` currently merges them into the last
reasoning item, which means a slice starting in the middle of reasoning
cannot know whether to append to an earlier item or create a new one.
- `WebSearchEndEvent`, `McpToolCallEndEvent`, collab end events, and
similar legacy events can often render a final-looking item, but they
usually rely on prior replay state to know which turn owns the item.
- Begin/end legacy events are partial views of one logical item. The
builder correlates them by `call_id` and mutates prior state to
synthesize the final `ThreadItem`.

That is the problem this direction fixes. A persisted canonical
lifecycle record looks much closer to the read model we actually want
later:

```rust
ItemCompletedEvent {
    turn_id,
    item: TurnItem { id, ...full snapshot... },
    completed_at_ms,
}
```

Once rollout has explicit `turn_id`, stable `item.id`, and a canonical
completed item snapshot, the future SQLite projector can reduce only the
new rollout suffix and upsert the affected `thread_items` rows. It no
longer needs to synthesize `item-N`, infer item ownership from the
active turn, or replay earlier events just to reconstruct the current
item snapshot.

## What changed

- Added core `TurnItem` variants and item structs for command execution,
dynamic tool calls, collab agent tool calls, and sub-agent activity.
- Added conversions from those canonical items back into the legacy
event shapes where current consumers still need them.
- Added app-server v2 `ThreadItem` conversion for the new core item
variants.
- Taught `ThreadHistoryBuilder` and rollout persistence metrics to
recognize the new item variants.

## Follow-up

The next PR https://github.com/openai/codex/pull/30283 switches the live
core producers for these item families onto canonical `ItemStarted` /
`ItemCompleted` events.
2026-06-26 16:44:34 -07:00
Abdulrahman Alfozan c55ce3b51b Close thread persistence when submission channel closes (#30173)
### Summary

Release live thread persistence when a session ends because its
submission channel closes. This prevents a later same-process resume
from failing with `thread ... already has a live local writer`.

### Details

The issue is in the `codex-core` session teardown path used by Codex
hosts, rather than in Managed Agents API or exec-server itself.

Explicit shutdown already closes the `LiveThread`, which releases the
process-scoped writer held by `LocalThreadStore`. The
submission-channel-close fallback ran runtime and extension teardown but
skipped that persistence shutdown, leaving the thread ID registered as
having a live writer.

This change:

- closes the `LiveThread` on the channel-close fallback path;
- preserves the existing teardown order used by explicit shutdowns;
- extends the lifecycle regression test to assert that the thread store
receives `shutdown_thread`.

Context: [original
report](https://openai.slack.com/archives/C0B4NBHQGTV/p1782136364948039),
[recent occurrence
1](https://openai.slack.com/archives/C0B4NBHQGTV/p1782434817895839?thread_ts=1782136364.948039&cid=C0B4NBHQGTV),
[recent occurrence
2](https://openai.slack.com/archives/C0B4NBHQGTV/p1782335107474429?thread_ts=1782136364.948039&cid=C0B4NBHQGTV)

### Testing

- `just test -p codex-core
submission_loop_channel_close_runs_full_thread_teardown`
- `just test -p codex-core --lib` (1,989 passed; 3 skipped)
- `just fix -p codex-core`
- `just fmt`
- Native code review: no findings

I also attempted `just test -p codex-core`. The new regression passed;
79 unrelated integration tests failed in the local harness, primarily
because helper binaries such as `test_stdio_server` were unavailable,
plus local proxy/shell timing failures.
2026-06-26 13:56:17 -07:00
Owen Lin f91334380e fix main (#30276)
Introduced by a merge race around thread.history_mode.
2026-06-26 18:05:00 +00:00
Owen Lin 5267e805fb feat(app-server): add history_mode to thread (#29927)
## Description

This PR adds a new `historyMode = "legacy" | "paginated"` to `Thread`.
This will be stored in `SessionMeta` in the JSONL rollout file and as a
new column in the SQLite thread_metadata table, and exposed on
`thread/start` and on the `Thread` object in app-server.

## What changed

- Added canonical `ThreadHistoryMode` with `legacy` and `paginated`,
defaulting old and new SessionMeta to `legacy`.
- Carried `history_mode` through core session config, ThreadStore stored
metadata, local/in-memory stores, rollout metadata extraction, and the
existing SQLite `threads` table.
- Added experimental `historyMode` to app-server v2 `Thread` and
`thread/start`.
- Made paginated stored threads metadata-discoverable but unsupported
for legacy full-history reads, `load_history`, live resume, and create
paths.
- Regenerated app-server schema fixtures and added
protocol/state/thread-store/app-server coverage for persistence and
fail-closed behavior.

## Compatibility floor
Because users may be running various versions of Codex binaries on the
same machine (TUI, Codex App, etc.), we will need to establish a
compatibility floor for upcoming paginated threads, which will change
how thread storage reads and writes work.

The overall plan here:
```
Release N:
- Add historyMode to SessionMeta / Thread / SQLite metadata.
- Teach binaries to understand paginated threads.
- If a binary sees `historyMode="paginated"` but does not support the paginated contract, it refuses to resume/mutate the thread.
- Default remains `"legacy"`.

Release N+1:
- First-party clients start opting into paginated threads where appropriate.
- Internal dogfood / staged rollout.
- Measure old-client usage and paginated-thread unsupported errors.

Release N+2:
- Only after Release N+ is overwhelmingly deployed, make paginated the default.
- Accept that a small tail of N-1-or-older binaries may not understand paginated threads.
```

The important behavior change is fail-closed handling for a binary that
encounters a persisted `paginated` thread before it knows how to fully
support paginated history. In app-server, if a thread is `paginated`, we
will:

- allow metadata-only discovery paths like `thread/list` and
`thread/read(includeTurns=false)`, so clients can still see the thread
and inspect its `historyMode`
- reject legacy full-history/live-thread paths like
`thread/read(includeTurns=true)` and `thread/resume` with an unsupported
JSON-RPC error
- avoid silently treating an unknown or future `historyMode` as `legacy`

Under the hood, the ThreadStore layer also rejects legacy operations
that would need to load or replay the full thread history for a
paginated thread. That gives us the behavior we want for Release N:
future paginated threads are visible, but this binary fails closed
instead of trying to operate on them as if they were legacy threads.
2026-06-26 09:12:42 -07:00
jif 6d2168f06a Reuse MCP runtimes when selected availability changes nothing (#30148)
## Why

MCP runtime reuse was keyed by every ready selected-capability
environment, even when an environment contributed no MCP servers or
connectors.

For example:

1. a global stdio MCP is running;
2. a selected remote environment contains only a skill;
3. that environment becomes ready;
4. the MCP and connector projection stays exactly the same;
5. Codex nevertheless rebuilds the MCP manager and restarts the global
stdio process.

That restart can interrupt active calls and discard process-local state
even though nothing about MCP changed.

## What changes

When selected-environment availability changes, Codex now resolves the
candidate MCP and connector projection before deciding whether to
replace the runtime:

- if the winning MCP servers or their ownership change, rebuild as
before;
- if the selected connector snapshot changes, rebuild as before;
- if an enabled MCP is explicitly bound to an environment whose
availability changed, rebuild as before;
- otherwise, keep the exact live manager and processes, and update only
the availability input remembered by the snapshot.

```text
ready selected environments:  [] -> [skills-env]
resolved MCP servers:          {global_probe} -> {global_probe}
resolved connectors:           {} -> {}
result:                         reuse manager; keep the same process
```

The comparison uses the resolved winning servers and their sources, so
plugin/config ownership remains part of the runtime identity.

## Existing stack coverage

The integration PR directly below this one already covers both rebuild
boundaries: a selected MCP becomes callable and a selected connector
tool becomes model-visible when their environment becomes available. It
also verifies that an unchanged selected MCP runtime keeps its process.

This PR does not add another remote-attachment integration scenario for
the no-change optimization. `environment/add` returns before readiness,
and app-server does not currently expose a deterministic readiness
signal for an environment that contributes only skills. Keeping a
fixed-delay test would add flake risk; adding a new readiness API would
be outside this fix.

## Scope and assumptions

- This does not change skill discovery, World State rendering, or plugin
metadata caching.
- This does not add file watching or hot reload behavior.
- This does not change disconnect/reconnect handling.
- Selected environment IDs and their capability contents retain the
stack's existing stability assumption.
- Delayed `required = true` executor MCP behavior remains out of scope.
2026-06-26 09:27:41 +01:00
Channing Conger 7d8906b478 [codex] wire process-owned code mode host into core (#30142)
## Summary

- add the `code_mode_host` feature flag and select
`ProcessOwnedCodeModeSessionProvider` in `CodeModeService` when enabled
- initialize code-mode sessions lazily so a missing host reports a tool
error without failing thread startup
- resolve `codex-code-mode-host` beside the running Codex binary by
default while preserving `CODEX_CODE_MODE_HOST_PATH` as an override
- add unit and end-to-end coverage for host resolution and graceful
missing-host behavior

## Why

This wires the process-owned session client from #30112 into the core
service behind an opt-in rollout gate. Packaged Codex installations can
place the helper in the same `bin` directory as the main executable
without relying on `PATH`, while development and custom installations
can continue to override the helper path.

## Stack

- Depends on #30112
- Base branch: `cconger/process-owned-session-runtime-4-client`

## Validation

Build `codex` and `codex-code-mode-host`
`CODEX_CODE_MODE_HOST_PATH="$PWD/target/debug/codex-code-mode-host"
./target/debug/codex --enable code_mode_host`
2026-06-26 00:23:33 -07:00
Tom f5f812389e [codex] fix terminal rollout event durability (#30144)
Currently session code does not flush the thread store after appending
the `TurnComplete` / `TurnAborted` events.

This isn't a problem in practice for local storage because append_items
itself effectively blocks, but any thread stores that buffer in
append_items and only commit on flush effectively never get these events
persisted.

The fix adds explicit rollout flushes at the terminal emitters after
normal completion and interruption.

Added test cases that assert the number of flushes when completing or
aborting turns. These are admittedly a little brittle and I'm open to
better ideas on how to add automated testing.
2026-06-25 21:01:11 -07:00
jif fb8598df3f Keep MCP elicitation routable across runtime refreshes (#30127)
## Why

An MCP tool call can still be waiting for an elicitation response when
an environment update replaces the thread's MCP runtime.

Before this change:

```text
runtime A starts a tool call and asks the user
environment becomes ready, so runtime B is published
client answers the prompt through runtime B
runtime B cannot find runtime A's pending responder
```

The response is lost and the original tool call stays blocked.

## What changed

All MCP runtimes for one thread now share a small elicitation router:

```text
runtime A ---\
               shared router: response token -> exact pending responder
runtime B ---/
```

When Codex surfaces an MCP elicitation, it assigns a unique opaque
response token. The router records which pending request owns that
token. A replacement runtime reuses the same router, so the latest
runtime can deliver a response to a request started by the previous
runtime.

The Codex-owned token also prevents two runtime connections that reuse
the same MCP server request ID from receiving each other's responses.

This does not retain or search old MCP managers. Only the pending
responder map is shared.

## Covered scenario

The integration test exercises the complete failure mode:

1. A thread starts while its selected environment is still unavailable.
2. A configured MCP server starts a tool call and asks the client for
input.
3. The environment becomes ready, causing Codex to publish a replacement
MCP runtime.
4. The client answers the original prompt after the replacement.
5. The original tool call receives that answer and completes.

A focused routing test also creates two runtimes with the same server
request ID and verifies that each response reaches the exact request
that emitted its token.

## Scope

This PR changes only elicitation response routing across MCP runtime
replacement. It does not change when runtimes are rebuilt, which
environments contribute MCP configuration, or how environment
availability is detected.
2026-06-26 01:28:14 +00:00
jif 3095ea9c3d Project selected plugin runtime by environment availability (#30093)
## Why

Selected plugin metadata is stable, but MCP processes are live runtime
state. They need different lifetimes:

- the MCP extension caches manifest, MCP, and connector declarations for
each stable selected root;
- each model step projects that cached metadata through the roots that
resolved as ready for that exact step;
- the MCP manager is rebuilt only when that availability projection
changes.

This matches executor skills: both features consume the same resolved
step roots instead of inferring readiness from the turn's selected
environments.

## Behavior

```text
E1 not ready for this step
  -> no E1 MCP servers or connectors
  -> cached plugin metadata stays in ext/mcp

E1 becomes ready
  -> reuse cached metadata
  -> publish one MCP runtime containing E1 capabilities

same ready roots on the next step
  -> reuse the exact runtime; no rediscovery and no MCP restart

resume
  -> create new extension thread state and a new MCP runtime
```

All model-facing consumers use the same step snapshot:

```text
resolved selected roots
        |
        v
extension MCP/connector projection
        |
        v
{ MCP config, connector snapshot, MCP manager }
        |
        +-> advertise model tools
        +-> build app/connector tools
        +-> execute MCP calls
```

## Cache contract

The existing MCP extension owns a cache keyed by the full
`SelectedCapabilityRoot`:

```rust
let state = thread_store.get_or_init(SelectedExecutorPluginMcpState::default);
```

The cache lives with extension thread state. Environment availability
filters projection but does not invalidate metadata. Resume creates new
thread state. There is no file watcher or executor generation because
contents behind a stable environment/root are assumed stable.

## What changes

- Keeps executor plugin discovery and cached metadata in `ext/mcp`.
- Caches MCP and connector declarations together per selected root.
- Uses the step's already-resolved capability roots, including lazy
environments that are not turn environments.
- Reuses the current MCP runtime when the ready-root projection is
unchanged.
- Uses the same step MCP manager and connector snapshot for
model-visible tools and execution.
- Resolves direct thread-scoped MCP requests from the current
selected-root projection.

## Deliberately out of scope

- `app/list` remains based on the latest global host-plugin state; this
PR does not make its response or notifications thread-specific.
- `required = true` startup semantics do not apply to delayed executor
MCP activation.
- No filesystem/content invalidation.
- No transport-disconnect watcher.
- No executor generations or environment replacement semantics.
- No client sharing across complete manager replacements.

## Stack

1. Extension-owned World State sections.
2. Project executor skills through World State.
3. Pin one MCP runtime to each model step.
4. **This PR:** project selected MCP and connector state from
extension-owned metadata.
5. Integration coverage for selected capability availability and resume.

## Verification

-
`selected_plugin_servers_use_managed_requirements_for_the_selected_root_id`
- The stacked integration PR covers unavailable to ready activation,
unchanged-runtime reuse, skills, MCP tools, connector attribution, and
cold resume.
2026-06-26 01:36:44 +01:00
jif ee9e0f6387 Pin MCP runtimes to model steps (#30101)
## Why

An MCP refresh can replace the session's current manager while a model
step is still running. The step must execute calls through the same
manager whose tools it advertised.

## Boundary

```text
current session MCP runtime
          |
          | capture once for this model step
          v
StepContext.mcp
  - exact MCP config
  - exact connection manager
  - exact runtime environment context
```

```rust
pub struct McpRuntimeSnapshot {
    config: Arc<McpConfig>,
    manager: Arc<McpConnectionManager>,
    runtime_context: McpRuntimeContext,
}
```

## Example

```text
step A captures runtime A and advertises A's tools
refresh publishes runtime B
step A tool call -> runtime A
next step        -> runtime B
```

Capturing the snapshot is only an `Arc` clone. It does not restart MCPs
or make an RPC.

## What changes

- Captures one MCP runtime in `StepContext`.
- Uses it for tool planning, tool calls, resources, approvals, connector
attribution, and elicitation.
- Publishes replacement runtimes atomically.
- Lets an old runtime live only while an in-flight step or request still
holds its `Arc`.

Most of this diff is mechanical routing from the session-global manager
to `step_context.mcp`; it does not introduce selected-plugin discovery
yet.

## What does not change

- No plugin or extension migration.
- No new MCP cache policy.
- No environment file watching.
- No client sharing between separate managers.

## Stack

1. Extension-owned World State sections.
2. Project executor skills through World State.
3. **This PR:** pin one MCP runtime to each model step.
4. Project selected MCP/app/connector metadata by environment
availability.
5. One end-to-end integration scenario.
2026-06-26 00:53:07 +01:00
jif 5eebeb8169 Project executor skills through World State (#30088)
## Why

A selected executor environment can be unavailable in one model step and
ready in the next. The model should see its skills only while that
environment is ready, without rescanning stable files on every sample.

The product assumption is simple:

- an environment ID names one stable logical environment;
- the selected root contents do not change during the thread.

## Behavior

```text
E1 unavailable -> do not show E1 skills
E1 ready       -> discover once, cache, show through World State
E1 unavailable -> hide skills, keep cache
E1 ready again -> reuse cache, show skills again
resume         -> create a new thread cache and discover again
```

The cache key is the full `SelectedCapabilityRoot`. Availability does
not invalidate it; dropping the extension's thread state does.

The step supplies the ready selected roots directly. They do not have to
be turn environments:

```text
turn environment: laptop
selected root:    worker:/plugins/lint-fix

worker ready -> lint-fix skills are visible
```

## What changes

- Keeps executor skill catalogs in the existing skills extension.
- Passes the roots resolved as ready for the step into World State
contributors.
- Loads each ready selected root at most once per thread.
- Contributes the executor catalog as the `skills` World State section.
- Uses the exact step catalog for explicit skill selection and body
reads.
- Leaves host and orchestrator skill behavior where it already lives.

Taking a step snapshot itself does not add an RPC. Executor filesystem
calls happen only on the first discovery of a stable root for that
thread.

## What does not change

- No filesystem watcher or content-based invalidation.
- No retry/generation framework.
- No skill runtime migration into core.
- No general rewrite of the skills extension.

## Stack

1. Extension-owned World State sections.
2. **This PR:** project cached executor skills through World State.
3. Pin one MCP runtime to each model step.
4. Project selected MCP/app/connector metadata by environment
availability.
5. One end-to-end integration scenario.
2026-06-26 00:13:43 +01:00
jif c9e6d9783d Let extensions contribute World State sections (#30100)
## Why

#29856 already owns the durable thread intent and exact environment
binding. This PR adds only the small missing extension boundary: an
extension can contribute one named World State section, while core still
owns persistence, diffing, and model-visible fragment types.

This lets skills stay in the skills extension instead of moving their
runtime into core.

## Shape

```text
extension-owned state
        |
        | contribute section id + JSON snapshot + renderer
        v
core World State
        |
        | compare with the previous snapshot
        v
no message, or one incremental model-visible update
```

The extension API is deliberately small:

```rust
fn contribute_world_state(...) -> Vec<WorldStateSectionContribution>
```

Core adapts the rendered result to `ContextualUserFragment`, records the
snapshot, and keeps the existing compaction/resume behavior.

## What changes

- Adds extension-owned World State section contributions.
- Calls those contributors from the existing per-step World State
builder.
- Restores durable selected capability roots into extension thread state
on resume.
- Keeps the actual model-context fragment and rollout machinery in core.

## What does not change

- No skill or MCP implementation moves out of its extension.
- No new file watcher, generation, or RPC.
- No generic migration of existing World State sections.
- No change to the stable environment-ID assumption from #29856.

## Example

```text
step 1 snapshot: skills = []
step 2 snapshot: skills = [executor-demo:deploy]

core asks the skills extension to render only that change.
```

## Stack

1. **This PR:** let extensions contribute World State sections.
2. Project executor skills through the skills extension.
3. Pin one MCP runtime to each model step.
4. Project selected MCP/app/connector metadata by environment
availability.
5. One end-to-end integration scenario.
2026-06-25 22:23:51 +01:00
Owen Lin 703793c22e feat(core, mcp): cache codex_apps tools in memory (#29003)
## Description

This makes Codex Apps tool reads use a shared in-memory snapshot instead
of rereading the disk cache every time `list_all_tools()` runs. Disk
still seeds the cache on startup and gets updated after successful
fetches, but it is no longer the live read path.

The core change is that `McpManager` now owns a process-scoped
`CodexAppsToolsCache`. Codex threads in the same app-server process now
share this Codex Apps in-memory tools snapshot. The snapshot is keyed by
the Codex home plus the Codex Apps identity: the active Codex auth
user/workspace and the effective Codex Apps MCP source config.

There's already code to hard-refresh the cache, so we respect it in this
PR.

## Local benchmark

I ran a local steady-state microbenchmark of the exact repeated Codex
Apps cached-tools read this PR removes, using the same real local cache
payload in both trees: `3,678,138` bytes and `381` tools. The cache file
was already warm in the OS page cache, so this measures same-process
reread/deserialization work rather than cold-disk latency or full turn
latency. Each run is 25 iterations (mimicking a turn that makes 25
inference calls).

| Version | Run 1 | Run 2 | Avg |
|---|---:|---:|---:|
| `origin/main` disk read + JSON deserialize + `filter_tools` | `50.755
ms` | `52.894 ms` | `51.825 ms` |
| This branch in-memory `current_tools` + `filter_tools` | `0.740 ms` |
`0.778 ms` | `0.759 ms` |

That removes about `51 ms` from each repeated Codex Apps cached-tools
read on this machine, roughly `68x` faster for that subpath. It is
useful evidence for the hot path this PR changes, but not a claim that
every production turn gets `51 ms` faster; end-to-end impact also
depends on the rest of `list_all_tools()` and tool-payload construction.

This is on my M2 Max macbook, so with a slower disk this would be much
worse (and indeed we did see this really blew up turn runtime with a
slow disk).
2026-06-25 20:54:48 +00:00
rka-oai adccb464d0 [codex] impl delivery_mode: current time reminders on response boundaries (#30033)
## Summary
- track user-like input and tool-output boundaries in current-time
reminder state
- gate reminder injection when delivery_mode is
after_user_or_tool_output
- preserve interval debounce and forced reminders after context-window
changes

## Why
Training can request reminders only after user or tool-output items
while keeping the existing canonical pre-inference history-injection
path.

## Validation
- just test -p codex-core
current_time_reminders_can_follow_only_user_or_tool_outputs
- just test -p codex-core
current_time_reminders_follow_time_interval_and_persist_in_history
- just test -p codex-core
current_time_reminder_is_refreshed_after_compaction
- just fix -p codex-core
2026-06-25 19:28:50 +00:00
rka-oai e8d4a1a411 [codex] add current time reminder delivery mode config (#30031)
```python
delivery_mode = "any_inference" # default
delivery_mode = "after_user_or_tool_output" # new mode
``` 

## Validation
- just test -p codex-core load_config_resolves_current_time_reminder
- just test -p codex-core
lock_contains_prompts_and_materializes_features
2026-06-25 19:06:43 +00:00
rka-oai cc78903379 [codex] current time reminder interval to be set to 0 (#30029)
A zero interval lets callers request a reminder at every
otherwise-eligible inference boundary.

## Validation
- just test -p codex-core load_config_resolves_current_time_reminder
2026-06-25 18:30:53 +00:00
Celia Chen 6d9dbacf1a feat: add provider-aware model fallback to thread start (#29942)
## Why

Helper threads such as task title generation can request a model ID that
is valid for the default OpenAI provider but unavailable from the active
provider. With Amazon Bedrock, `gpt-5.4-mini` is rejected while the
provider static catalog exposes Bedrock model IDs such as
`openai.gpt-5.5` and `openai.gpt-5.4`. This causes repeated background
404s and can surface a misleading turn error even when the main turn
succeeds.

Clients need an explicit way to ask app-server to resolve an unavailable
helper model to the active provider default. That fallback must remain
limited to providers with an authoritative static catalog so custom or
dynamically discovered model IDs are not rewritten based on an
incomplete catalog.

Fixes #28741.

## What changed

- Add the experimental `allowProviderModelFallback` option to
`thread/start`, defaulting to `false` to preserve existing behavior.
- Thread the option through thread creation and model selection.
- When enabled for a static model manager, preserve requested models
present in the catalog and replace unavailable models with the provider
default.
- Continue preserving explicit model IDs for dynamic model managers
without fetching a catalog solely to validate them.
- Document the new `thread/start` behavior in the app-server API
overview.

## Test
Temporary test-client harness:
```
ThreadStartParams {
    model: Some("gpt-5.4-mini".to_string()),
    allow_provider_model_fallback: true,
    ..Default::default()
}
```
Command:
```
CODEX_HOME=/tmp/codex-bedrock-thread-start-home \
CODEX_E2E_BEDROCK_THREAD_START_ONLY=1 \
./target/debug/codex-app-server-test-client \
  --codex-bin ./target/debug/codex \
  -c 'model_provider="amazon-bedrock"' \
  send-message-v2 --experimental-api ignored
```
Relevant output:
```
> "method": "thread/start",
> "params": {
>   "model": "gpt-5.4-mini",
>   "modelProvider": null,
>   "allowProviderModelFallback": true,
>   ...
> }

< "result": {
<   "model": "openai.gpt-5.5",
<   "modelProvider": "amazon-bedrock",
<   ...
< }
```
2026-06-25 18:24:34 +00:00
jif 8f02973d25 Persist selected capability roots and resolve availability per model step (#29856)
## Why

`selectedCapabilityRoots` is durable thread intent: “use this capability
root from environment `worker`.”

The important product assumption is:

> One environment ID always names the same logical executor and stable
contents.

`worker` does not silently change from executor A to an unrelated
executor B. The process-local connection handle for `worker` can still
be replaced while Codex is running, though, for example when
`environment/add` registers a fresh handle for the same logical
environment.

The thread should persist only the stable selection. Each model step
should pair that selection with the exact ready handle captured for that
step.

## The boundary

```text
persisted thread intent
  plugin@1 -> environment "worker"
                |
                | capture the current step
                v
model-step view
  unavailable, or
  plugin@1 + worker's exact captured ready handle
```

The environment ID is the stable identity and cache key. The
`Arc<Environment>` is only a process-local handle retained so consumers
of one model step use the same captured environment. It is never
persisted and it does not imply different environment contents.

## What changes

### Persist the stable selection

Selected roots are written into `SessionMeta` and restored with the
thread. Forked subagents inherit the same selections, including
bounded-history forks.

Only stable data is persisted: root ID, environment ID, and root path.

### Capture readiness together with the exact handle

The environment snapshot records:

```rust
environment_id -> Some(Arc<Environment>) // ready in this step
environment_id -> None                   // still starting in this step
```

This prevents readiness and execution from coming from different
registry snapshots.

For example:

```text
step snapshot: worker -> handle A, ready
environment/add: worker -> fresh handle B for the same logical environment
current step: plugin@1 still uses captured handle A
```

Without carrying handle A in the snapshot, the resolver could combine “A
was ready” with handle B and treat B as ready before it had finished
starting.

This does not change cache invalidation. Stable capability metadata
remains identified by environment ID and capability root. Replacing a
process-local handle under the same stable environment ID does not
invalidate or rediscover that metadata.

### Resolve availability per model step

- A ready captured environment produces resolved roots using its
captured handle.
- A starting, missing, or failed environment is omitted from that step.
- A selected lazy environment that is outside the turn's captured
environment set is asked to start, and a later step can observe it as
ready.
- No capability files are scanned here.

Transient transport disconnects remain the remote client's reconnect
concern. This PR models initial attachment/readiness; it does not add
live socket-connectivity state.

## Example

```text
thread selection: plugin@1 -> environment "worker"

step 1: worker is starting -> plugin@1 unavailable
step 2: worker is ready    -> plugin@1 resolves through worker's captured handle
step 3: fresh local handle -> current step remains pinned; a later step captures its own view
```

Temporary unavailability does not discard the durable selection. Later
PRs can retain stable metadata caches while projecting only currently
available capabilities into model-visible World State.

## Compatibility

The app-server request shape does not change. Older rollouts without
`selected_capability_roots` deserialize to an empty list.

## Stack

1. **This PR:** persist stable selected roots and resolve them through
an exact model-step handle.
2. #29960: cache stable skill metadata and project available skills into
World State.
3. #29946: cache stable plugin declarations and manage the separate live
MCP runtime.
2026-06-25 17:49:43 +00:00
jif b215961a56 Support OAuth for HTTP MCP servers from selected executor plugins (#28529)
## Why

#28522 routes selected-plugin HTTP MCP traffic through the owning
executor, but OAuth bootstrap and refresh still used host-local clients.
Executor-only servers therefore cannot complete discovery or login
through the same network boundary as the MCP connection.

## What changed

- adapt `codex_exec_server::HttpClient` to RMCP 1.8's `OAuthHttpClient`
contract
- let RMCP own discovery, dynamic registration, PKCE, token exchange,
and refresh
- route auth status, persisted-token startup, and app-server login
through the server runtime while preserving the existing local discovery
path
- add optional `threadId` to `mcpServer/oauth/login` and echo it in the
completion notification
- implement RMCP's redirect policy and 1 MiB OAuth response limit over
executor HTTP
- cover selected-thread OAuth discovery and login through an
executor-only route

Depends on #28522.
2026-06-25 10:31:17 +01:00
sayan-oai f2f80ef442 core: make AGENTS.md react to environment changes (#29810)
## Why

With deferred executors, a turn can begin before a remote environment
attaches. AGENTS.md discovery previously ran only during session setup,
so instructions from a later environment never reached the model or the
session instruction sources.

WorldState persistence has now landed, so this uses the durable
model-visible baseline directly instead of carrying a temporary
resume/fork compatibility path.

## What

- Add an `AgentsMdManager` in `SessionServices` to own host
instructions, loaded state, and refresh caching.
- When `DeferredExecutor` is enabled, refresh AGENTS.md when attached
environment selections change and freeze the result in the corresponding
`StepContext`.
- Represent AGENTS.md as a persisted WorldState section for every
session, with bounded initial, replacement, and removal updates.
- Remove duplicate AGENTS.md state and rendering from
`SessionConfiguration` and `TurnContext`.
- Build initial context, per-request updates, and compaction context
from the same step-scoped value.
- On resume and fork, compare current instructions with the restored
WorldState baseline and inject a replacement exactly once when they
differ.

Builds on #29833, #29835, and #29837.

## Tests

- Covers a remote environment becoming ready mid-turn, with AGENTS.md
appearing on the next request exactly once and updating canonical
instruction sources.
- Covers full, unchanged, replaced, and removed AGENTS.md WorldState
rendering.
- Covers changed instructions across cold resume and fork without
duplicate reinjection.
- Covers remote-v2 compaction retaining creation-time instructions in
the live session and cold resume appending one replacement when the
source changed.
- Ran focused `codex-core` AGENTS.md, WorldState, and context-update
test suites.
2026-06-24 22:57:42 -07:00
Adrian 51864b0b4b feat: use run agent task auth for inference (#19051)
## Stack

This is PR 3 of the simplified HAI single-run-task stack:

- [#19047](https://github.com/openai/codex/pull/19047) Agent Identity
assertion and task-registration primitives, including the shared
run-task helper used by existing Agent Identity JWT auth.
- [#19049](https://github.com/openai/codex/pull/19049)
Disabled-by-default ChatGPT auth opt-in that provisions/reuses persisted
Agent Identity runtime auth and its single run task.
- [#19051](https://github.com/openai/codex/pull/19051) Run-scoped
provider auth that uses one backend-owned task id for first-party
inference and compaction requests.

[#19054](https://github.com/openai/codex/pull/19054) collapsed out of
the active stack because the simplified design no longer needs a
separate background/control-plane task helper.

## Summary

This PR moves Agent Identity usage into provider auth resolution. That
keeps `AgentAssertion` auth tied to first-party OpenAI provider requests
instead of applying a late session-wide override that could affect
local, custom, Bedrock, API-key, or external-bearer providers.

What changed:

- adds a small `ProviderAuthScope` struct carrying the run auth policy
and session source needed by provider-scoped auth resolution
- lets `Session` opt the existing `ModelClient` into `ChatGptAuth`
policy when `use_agent_identity` is enabled, without adding a second
model-client constructor
- resolves Agent Identity only for first-party OpenAI provider auth
paths
- uses the persisted run task id from the `AgentIdentityAuth` record to
build `AgentAssertion` auth for Responses requests
- routes shared request setup through scoped provider auth so unary
compact requests use the same run-task assertion path as inference turns
- keeps local/custom/Bedrock/env-key/external-bearer provider auth
unchanged
- lets missing run-task state surface through the existing model-request
error path instead of silently falling back to bearer auth

This PR intentionally does not create thread-scoped, target-scoped, or
background-scoped task identities. The run task is the only task Codex
registers in this POC shape.

## Testing

- `just test -p codex-model-provider`
- `just test -p codex-core client::tests::provider_auth_scope_uses`
- `just test -p codex-core remote_compact_uses_agent_identity_assertion`
2026-06-24 22:31:41 -07:00
sayan-oai a74771340d [3/3] core: replay persisted world state (#29837)
## Why

Persisting `WorldState` snapshots and patches is only useful if resume
and fork restore that exact comparison baseline. Rebuilding it from
`TurnContextItem` loses section state and can either repeat or suppress
model-visible updates.

This is the third PR in the WorldState persistence stack, built on
#29835.

## What

- Replay full WorldState snapshots and RFC 7386 patches through the
existing rollout reconstruction segments.
- Discard state from rolled-back turns and treat compaction as a
baseline reset.
- Hydrate `ContextManager` from the reconstructed snapshot on resume and
fork.
- Remove the synthetic `TurnContextItem` to WorldState conversion path.
- Leave legacy or malformed rollouts without a baseline so the next
update safely emits a full snapshot.

## Testing

- `just test -p codex-core world_state`
- `just test -p codex-core rollout_reconstruction_tests`
- `just fix -p codex-core`
- `just test -p codex-core` *(the changed tests passed; the full run
also hit unrelated existing/test-environment failures, primarily a
missing `test_stdio_server` binary)*
2026-06-25 03:32:08 +00:00
Shijie Rao df1199fddb [codex] Add Ultra reasoning effort (#29899)
## Why

Ultra should be one user-facing reasoning selection for work that
benefits from both maximum reasoning and proactive multi-agent
delegation. Without it, clients must coordinate maximum reasoning with
the experimental `multiAgentMode` setting, even though the inference
backend still expects its existing `max` effort value.

This change makes reasoning effort the source of truth: clients select
`ultra`, core derives proactive multi-agent behavior when the turn is
eligible for multi-agent V2, and inference requests continue to use the
backend-compatible `max` value.

## What changed

- Add `ultra` as a first-class reasoning effort and preserve
model-catalog ordering when exposing it to clients.
- Convert `ultra` to `max` at the inference request boundary, including
Responses HTTP/WebSocket requests, startup prewarm, compaction, and
memory summarization.
- Derive effective multi-agent mode per turn from effective reasoning
effort:
  - eligible multi-agent V2 + `ultra` → `proactive`
  - eligible multi-agent V2 + any other effort → `explicitRequestOnly`
- V1 or otherwise ineligible sessions → no multi-agent mode instruction
- Keep the derived effective mode in turn context history so successive
turns can emit a developer-message update only when the effective mode
changes.
- Remove selected multi-agent mode from core session configuration, turn
construction, thread settings, resume/fork restoration, and subagent
spawn plumbing. Subagents inherit reasoning effort and derive their own
effective mode.
- Retain the experimental app-server `multiAgentMode` fields for wire
compatibility while marking them deprecated. Request values are accepted
but ignored; compatibility response fields report `explicitRequestOnly`.
- Display Ultra in the TUI using the order supplied by `model/list`.

## Validation

- `just test -p codex-core ultra_reasoning_uses_max_for_requests`
- `just test -p codex-tui model_reasoning_selection_popup`
2026-06-24 20:13:52 -07:00
sayan-oai fa036d39aa [2/3] core: persist world state in rollouts (#29835)
## Why

`WorldState` currently remembers its model-visible diff baseline only in
memory. That leaves no durable source for restoring the exact baseline
after resume, fork, rollback, or compaction.

This is the second PR in the WorldState persistence stack, built on
#29833 and following #29249. It records durable state transitions; the
next PR will replay them during rollout reconstruction.

## What

- Add a `world_state` rollout item containing either a full snapshot or
an RFC 7386 JSON Merge Patch.
- Persist a full snapshot after initial context and after compaction
establishes a new context window.
- Persist non-empty patches when later sampling steps or turns advance
the WorldState baseline.
- Write model-visible history before its matching WorldState record, so
an interrupted write can only cause a safe repeated update on replay.
- Preserve WorldState records for full-history forks while excluding
them from thread previews, metadata, and app-server history
materialization.

Older binaries read rollout lines independently, so they skip the
unknown `world_state` records while retaining the rest of the thread.

## Testing

- `just test -p codex-core
snapshot_merge_patch_changes_and_removes_nested_values`
- `just test -p codex-core
world_state_baseline_deduplicates_until_history_is_replaced`
- `just test -p codex-core
deferred_executor_compaction_preserves_then_updates_environment_once`
- `just test -p codex-protocol`
- `just test -p codex-rollout`
- `just test -p codex-state`
- `just test -p codex-thread-store`
- `just test -p codex-app-server-protocol`
2026-06-24 20:13:49 -07:00
sayan-oai 3e51b46eba [1/3] core: make world state snapshots serializable (#29833)
## Why

`WorldState` currently keeps its diff baseline as live Rust objects
keyed by process-local `TypeId`. That baseline cannot be written to a
rollout or restored after resume, so Codex reconstructs an approximation
from `TurnContextItem`.

This is the first change in the WorldState persistence stack. It gives
every section a stable persisted identity and a compact serializable
comparison snapshot without changing rollout behavior yet.

## What changed

- Require each `WorldStateSection` to define a stable ID and
serializable snapshot type.
- Reject duplicate section IDs when constructing `WorldState`.
- Persist a dedicated environment comparison snapshot using
model-visible strings instead of runtime path types.
- Store only `WorldStateSnapshot` in `ContextManager`, removing the
parallel live-object baseline.
- Render diffs by restoring each section's typed snapshot; invalid
snapshots fall back to a full section render.
- Omit null object fields for future RFC 7386 patches while preserving
null values inside arrays.

Follow-up PRs will record full snapshots and merge patches, then restore
the baseline during resume, fork, and rollback.

## Test plan

- WorldState snapshot tests cover stable IDs, duplicate rejection, null
omission, and array preservation.
- Environment tests cover persistence-safe snapshot values and existing
diff rendering.
- ContextManager baseline deduplication and session context-update
persistence tests.

Related: #29249
2026-06-24 19:26:55 -07:00
Michael Bolin f15df624a6 core: add configurable <context_window_guidance> message (#29936)
## Why

This PR adds a configurable `<context_window_guidance>` developer
section immediately after `<context_window>`. Harness integrations need
this section to give the model deployment-specific instructions for
preparing for context-window transitions.

## What changed

- Add an optional `features.token_budget.guidance_message` config with a
1,000-byte runtime cap and generated schema support.
- Render configured guidance as a developer `ContextualUserFragment`
wrapped in `<context_window_guidance>` immediately after
`<context_window>`.
- Omit the section when guidance is unset, empty, or whitespace-only.
- Preserve the resolved value in config locks and classify persisted
guidance as contextual developer content.
- Add integration coverage for rendered content and ordering.
2026-06-24 18:03:44 -07:00
rka-oai 35f5d02464 [codex] nest sleep config under current time reminder (#29910)
## Summary

- move sleep tool enablement from top-level `[features].sleep_tool` to
`[features.current_time_reminder].sleep_tool`
- remove the standalone `Feature::SleepTool` flag and gate `clock.sleep`
from resolved current-time configuration
- update config schema, config-lock materialization, and existing sleep
coverage

Stacked on #29907.
2026-06-24 17:49:00 -07:00
jif 4e0f863df3 Add a connector declaration snapshot (#29851)
## Why

Connector declarations currently enter Codex through broad plugin
capability summaries, then MCP setup, turn tooling, and `app/list` each
reconstruct the same information. That makes executor-selected
connectors difficult to add without coupling connector behavior to the
host plugin loader.

This PR introduces a small connector-owned value that later stack layers
can populate before thread startup.

## What changed

- Move the pure app-declaration parser into `codex-connectors`,
preserving declaration order and category cleanup while leaving
host-side validation and deduplication unchanged.
- Add an immutable `ConnectorSnapshot` with ordered connector IDs and
plugin display-name provenance.
- Adapt the existing local-plugin capability summaries into that
snapshot at current consumer boundaries.
- Use the snapshot for MCP tool provenance, turn connector inventory,
and `app/list`.
- Keep the crate API narrow: no test-only snapshot accessors are
exposed.

The externally visible behavior is unchanged. Connector tools still come
from the orchestrator-owned `/ps/mcp` server, and local plugin
enablement remains owned by the existing plugin loader.

## Stack scope

This is the foundation only. It does not read selected executor packages
or change thread startup. #29852 adds the executor-backed declaration
reader, and #29856 composes selected declarations into a thread
snapshot.
2026-06-24 23:24:01 +01:00
Adam Perry @ OpenAI df1ee09ec5 mcp: keep elicitation requests below app wire types (#29724)
## Why

Core and tools need to request MCP elicitation without constructing
app-server wire payloads. The request should remain a neutral protocol
concept until app-server serializes it for a client.

## What changed

- Switched core and tools to
`codex_protocol::approvals::ElicitationRequest`.
- Derived turn and server context inside core instead of carrying
app-server request types through lower layers.
- Kept the app-server payload unchanged through an explicit boundary
conversion.
- Removed the remaining production app-server-protocol dependency from
tools.

## Stack

This is PR 5 of 6, stacked on [PR
#29723](https://github.com/openai/codex/pull/29723). Review only the
delta from `codex/split-connector-metadata-types`. Next: [PR
#29725](https://github.com/openai/codex/pull/29725).

## Validation

- `codex-core` MCP coverage passed: 87 tests.
- Tools elicitation and app-server round-trip coverage passed.
2026-06-24 20:53:27 +00:00
Drew a33ad93996 [apps] Thread structured icon assets through app list (#29889)
## Summary

- Add `iconAssets` and `iconDarkAssets` to the app-list protocol.
- Preserve structured icons through directory merging and the connector,
app-
  server, and TUI boundaries.
- Keep legacy logo URLs unchanged as compatibility fallbacks.
- Update generated protocol schemas and TypeScript types.
2026-06-24 13:25:44 -07:00
jif b4f0f3eff1 Persist agent messages as response items (#29829)
## Why

Inter-agent messages are recorded in live history as
`ResponseItem::AgentMessage`, but rollouts stored
`InterAgentCommunication` and rebuilt the response item during resume.
This made the rollout differ from the actual Responses history.

## What changed

- store the prepared `agent_message` response item directly
- keep `trigger_turn` in a small local metadata record for fork
truncation
- keep reading older `inter_agent_communication` rollout items
2026-06-24 15:43:10 +01:00
rhan-oai 2a320fedb5 [codex] Remove auto-compaction opt-out (#29815)
## Summary

- remove the default-on `auto_compaction` feature flag and generated
config schema entries
- restore unconditional pre-turn, model-switch/hash, and mid-turn
automatic compaction
- expose `new_context` whenever token-budget tooling is enabled
- remove the disabled-auto-compaction integration coverage introduced by
#28260

## Motivation

Roll back the internal auto-compaction escape hatch added in #28260.
Automatic compaction should no longer be suppressible with `--disable
auto_compaction`; existing manual `/compact` behavior remains unchanged.

## Testing

- `just write-config-schema`
- `just test -p codex-features` — 53 passed
- `just test -p codex-core 'suite::compact::'` — 36 passed
- `just test -p codex-core
suite::token_budget::new_context_tool_starts_new_window_before_follow_up`
— 1 passed
- `just fix -p codex-core -p codex-features`
- `just fmt`
- `just test -p codex-core` — 2,778 passed, 59 failed, 16 skipped;
failures were outside the changed compaction paths and were dominated by
missing first-party test binaries and shell-snapshot timeouts
2026-06-24 00:15:04 -07:00
Adam Perry @ OpenAI e639e8c4bd connectors: own app metadata types (#29723)
## Why

Connector metadata is consumed by connector discovery, ChatGPT
integration, core, and TUI code. Treating app-server's wire DTO as the
shared domain model reverses the intended dependency direction.

## What changed

- Added connector-owned app branding, review, screenshot, metadata, and
info types.
- Added explicit conversions in app-server and TUI while preserving
app-server's wire payloads.
- Removed production app-server-protocol dependencies from connectors
and ChatGPT connector code.

## Stack

This is PR 4 of 6, stacked on [PR
#29722](https://github.com/openai/codex/pull/29722). Review only the
delta from `codex/split-config-layer-types`. Next: [PR
#29724](https://github.com/openai/codex/pull/29724).

## Validation

- Connector and tools coverage passed.
- App-server app-list coverage passed: 13 tests.
2026-06-23 22:08:23 -07:00
Adam Perry @ OpenAI 1d65ccabd5 config: own layer provenance types (#29722)
## Why

Config layer provenance describes how effective configuration was
assembled, so it belongs with the config loader rather than in
app-server's serialized API types.

## What changed

- Moved `ConfigLayerSource`, `ConfigLayerMetadata`, and `ConfigLayer`
ownership into `codex-config`.
- Kept app-server's wire payloads unchanged and added explicit
conversions at the app boundary.
- Removed lower-level app-server-protocol dependencies from config
consumers.

## Stack

This is PR 3 of 6, stacked on [PR
#29721](https://github.com/openai/codex/pull/29721). Review only the
delta from `codex/split-auth-domain-types`. Next: [PR
#29723](https://github.com/openai/codex/pull/29723).

## Validation

- `codex-config` coverage passed.
- App-server config-manager and config RPC coverage passed.
2026-06-24 04:03:04 +00:00
pakrym-oai 806a4b66c9 [codex] Assign response item IDs in forked history (#29767)
## Why

Fork-specific response items, including the subagent usage hint, are
appended directly to `InitialHistory::Forked`. This bypasses the normal
history insertion path that assigns missing response item IDs when
`Feature::ItemIds` is enabled, so the child could reconstruct and
persist those items without IDs.

## What changed

- When `Feature::ItemIds` is enabled, assign missing IDs to top-level
`ResponseItem`s while materializing `InitialHistory::Forked`, before
both reconstruction and persistence.
- Preserve existing IDs and use the same owned rollout items for live
history and persistence.
- Extract the existing single-item ID allocation logic for reuse by the
fork path.
- Add coverage that verifies a fork-only developer message receives the
same ID in live and persisted history with the feature enabled.

Normal history recording, compacted-history replacement, and fork
handling all continue to honor `Feature::ItemIds`. External-agent
imports, normal resume, and nested legacy compaction checkpoints are
unchanged.

## Testing

- `just test -p codex-core
record_initial_history_reconstructs_forked_transcript`
- `just test -p codex-core
record_initial_history_assigns_and_persists_id_for_forked_response_item`
2026-06-24 03:03:19 +00:00
pakrym-oai 176af2b510 [codex] Reuse compacted history replacement for new context windows (#29762)
## Why

`start_new_context_window` independently replaced in-memory history and
persisted a compacted checkpoint instead of using the shared
compacted-history path. That bypassed the centralized missing-item-ID
assignment when `item_ids` is enabled, so fresh context messages could
enter the new context window and its persisted replacement history
without IDs.

This follows up on the token-budget compaction reset flow introduced in
[#29743](https://github.com/openai/codex/pull/29743).

## What changed

- Delegate new context-window installation to
`replace_compacted_history`.
- Reuse its ID assignment, in-memory replacement, world-state baseline,
checkpoint persistence, turn-context persistence, and session-start
bookkeeping.
- Add focused coverage that verifies generated IDs are present in live
history and preserved in the persisted replacement history.

## Testing

- `just test -p codex-core
start_new_context_window_assigns_and_persists_item_ids`
- `just test -p codex-core
new_context_tool_starts_new_window_before_follow_up`
2026-06-23 18:53:35 -07:00
Michael Bolin 97dce078c5 chore: assign amsg_ IDs to agent messages (#29750)
## Why

The `ItemIds` path fills in missing IDs before response items are
persisted and emitted as raw item events. `ResponseItem::AgentMessage`
is part of that same response-item stream, but it was skipped by the
missing-ID repair path, leaving agent messages without stable item IDs
while messages and tool items received generated IDs.

Agent messages recorded through `InterAgentCommunication` also need the
generated ID to survive rollout persistence and resume. Otherwise
clients can observe an `amsg_` ID for the live raw response item, then
see that same persisted agent message lose its item ID after restart.

## What changed

- Assign missing `ResponseItem::AgentMessage` IDs with the `amsg_`
prefix.
- Persist the generated item ID on `InterAgentCommunication` and replay
it back into the reconstructed `ResponseItem::AgentMessage` on resume.
- Keep the persisted ID out of the model-visible inter-agent message
envelope.
- Keep `CompactionTrigger` and `Other` skipped because they do not get
generated item IDs.
- Update session/protocol tests for agent-message ID assignment and
resume preservation.

## Manual Testing

Run the local dev build using `just c --enable item_ids` to ensure this
code is exercised:


https://github.com/openai/codex/blob/322e33512b2d38d38d705e2ef692a8aca50decac/codex-rs/core/src/session/mod.rs#L2713-L2715

In the `.jsonl` file, I saw entries like:

```json
{
  "timestamp": "2026-06-24T00:44:03.098Z",
  "type": "inter_agent_communication",
  "payload": {
    "id": "amsg_019ef715-849a-7a50-becc-ce63c6a9c994",
```

## Test plan

- `just test -p codex-core
record_inter_agent_communication_preserves_item_id_in_rollout_and_resume`
- `just test -p codex-core
record_inter_agent_communication_sets_turn_id_in_rollout_and_resume`
- `just test -p codex-protocol
inter_agent_communication_response_input_item_preserves_commentary_phase`
2026-06-23 17:57:03 -07:00
alexsong-oai 1acb722e8a Support thread-level originator overrides (#29477)
## Why

Work(TPP) threads can be launched from the Desktop app, but if they all
keep the Desktop app's default originator then downstream attribution
cannot distinguish local Work launches from cloud-backed Work launches.
`thread/start.serviceName` already carries that launch signal, while
`SessionMeta.originator` is the durable thread-level value that survives
resume and fork.

This change converts the Desktop Work service names into an effective
originator at thread creation time, persists that originator with the
thread, and keeps using it for later model requests and memory writes.

## What changed

- Map `CODEX_WORK_LOCAL` and `CODEX_WORK_CLOUD` service names to
per-thread originators, while preserving
`CODEX_INTERNAL_ORIGINATOR_OVERRIDE` as the highest-precedence override.
- Persist the effective originator in `SessionMeta.originator`, read it
back on resume/fork, and inherit the parent originator for subagent
spawns when there is no persisted session metadata.
- Handle truncated `SpawnAgentForkMode::LastNTurns` forks by falling
back to the live parent originator when the forked history no longer
includes `SessionMeta`.
- Thread the per-thread originator through Responses headers,
websocket/compaction request paths, thread-store creation, rollout
metadata, and memory stage-one telemetry.

## Verification

- `just test -p codex-core
agent::control::tests::spawn_thread_subagent_inherits_parent_originator_without_fork
agent::control::tests::spawn_thread_subagent_fork_last_n_turns_inherits_parent_originator_without_session_meta
thread_manager::tests::originator_override_precedes_service_name_remapping`
- `just test -p codex-core
agent::control::tests::resume_thread_subagent_restores_stored_metadata_and_effective_multi_agent_mode`
- `just test -p codex-memories-write`
- `just fix -p codex-core -p codex-memories-write`
- `git diff --check`
2026-06-23 17:23:38 -07:00
Michael Bolinandpakrym-oai 32b65bbf7a core: reset context for token budget compaction (#29743)
## Why

When `Feature::TokenBudget` is enabled, compaction should behave like
`new_context`: start a fresh context window with the standard injected
context, without asking the server to summarize old history and without
carrying prior user or assistant messages into the next model request.

This is still a compaction operation from the client lifecycle
perspective. Manual `/compact` and auto-compaction should keep the same
observable side effects that clients and hooks expect, including compact
hooks and `TurnItem::ContextCompaction`.

## What changed

- Added `compact_token_budget` to run token-budget manual and inline
auto-compaction through a shared compaction lifecycle.
- Split pending `new_context` requests from forced context-window
startup: `take_new_context_window_request()` consumes pending requests,
and `start_new_context_window()` installs a fresh context window.
- Routed token-budget manual `/compact` and inline auto-compaction to
install a fresh context window locally instead of calling server/local
summarization.
- Preserved compact lifecycle side effects for token-budget compaction
by running pre/post compact hooks and emitting `ContextCompaction` item
start/completion events.
- Updated token-budget tests to assert fresh window IDs, absence of
server-side compaction calls, dropped prior transcript messages/tool
output after reset, and compact hook/item lifecycle behavior.

## Testing

- `just test -p codex-core
token_budget_context_uses_new_window_after_compaction`
- `just test -p codex-core token_budget_compaction_runs_compact_hooks`
- `just test -p codex-core
token_budget_mid_turn_auto_compaction_resets_before_active_follow_up`

---------

Co-authored-by: pakrym-oai <pakrym@openai.com>
2026-06-23 16:59:04 -07:00
rka-oai 1ec3def0b5 [codex] rename rollout budget error to session budget error (#29744)
## Summary

- rename the rollout-budget exhaustion error from
`RolloutBudgetExceeded` to `SessionBudgetExceeded`
- expose the matching app-server v2 wire value as
`sessionBudgetExceeded`
- regenerate JSON/TypeScript schema fixtures and update the app-server
docs and focused tests

This is a naming-only follow-up to #29715 based on [Pavel's review
suggestion](https://github.com/openai/codex/pull/29715#discussion_r3463183480).
Runtime behavior is unchanged.

## Tests

- `just test -p codex-core rollout_budget`
- `just test -p codex-app-server-protocol`
- `just fmt`
- `just write-app-server-schema`
2026-06-23 16:49:13 -07:00
Michael Bolin 77e7ce1374 fix: scope context remaining to body window (#29665)
## Why

With `model_auto_compact_token_limit_scope = "body_after_prefix"`, the
persistent prefix should not count against the active body window.
`get_context_remaining` and the token-budget reminder should report the
same usable body-after-prefix window that auto-compaction uses, rather
than the total token count since the session began.

This is stacked on #29664 so the mechanical move from `turn.rs` is
isolated from the behavior fix.

## What

- Extends `ContextWindowTokenStatus` with `context_remaining_tokens`.
- Updates `get_context_remaining` to use the shared context-window
accounting.
- Adds integration coverage for body-after-prefix reminder timing and
`get_context_remaining` output.

## Testing

- `just test -p codex-core body_after_prefix_window`
- `just test -p codex-core auto_compact_body_after_prefix`
- `just fix -p codex-core`
2026-06-23 23:08:54 +00:00
Michael Bolin 4dde907d27 refactor: extract context window token status (#29664)
## Why

This PR keeps the mechanical helper extraction separate from the
behavior change in #29665. The follow-up needs the token-window
accounting from `turn.rs` in another call path, but reviewing that is
much easier when the helper extraction is separate from the semantic
change.

## What

- Adds `session/context_window.rs` with `ContextWindowTokenStatus`.
- Moves the existing auto-compaction token-status calculation out of
`session/turn.rs`.
- Replaces the duplicated inline remaining-token calculation in
`turn.rs` with `tokens_until_compaction()`.

This PR is intended to be behavior-preserving. The
`get_context_remaining` behavior change is stacked separately in #29665.

## Testing

- `just test -p codex-core auto_compact_body_after_prefix`













---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/29664).
* #29665
* __->__ #29664
2026-06-23 15:49:30 -07:00
rka-oai bbbea91960 [codex] surface rollout budget exhaustion (#29715)
## Summary
- surface shared rollout-budget exhaustion as
`CodexErr::RolloutBudgetExceeded` instead of a generic interrupted turn
- map it through the existing `CodexErrorInfo` and app-server v2
`codexErrorInfo` path
- keep local compaction from retrying after the shared rollout budget is
exhausted

This gives app-server clients a stable `rolloutBudgetExceeded` error
they can classify without guessing from `status="interrupted"`.

## Tests
- `just test -p codex-core rollout_budget`
2026-06-23 15:01:28 -07:00
Michael Bolin 01f89c8c59 core: persist initial context window metadata (#29519)
## Why

PR #29494 made context-window IDs visible to the model by wrapping the
token-budget window payload in `<context_window>`, but rollout JSONL
consumers still could not see the initial window identity by tailing the
session file. Compacted rollout items carry window IDs only after
compaction has happened, so a session with no compaction had no durable
JSONL record for window 0.

This change gives tailing consumers a stable initial-window record at
session creation time.

## What Changed

- Added `session_meta.context_window.window_id` for the initial
context-window identity.
- `CreateThreadParams` now requires `initial_window_id: String`, so
thread-store callers cannot accidentally create new threads without
window-0 metadata.
- Live thread creation derives the persisted initial window ID from the
same `AutoCompactWindowIds` used to initialize `SessionState`, keeping
runtime state and JSONL metadata aligned.
- Rollout reconstruction uses `session_meta.context_window.window_id` as
the initial-window fallback and derives `window_number = 0`,
`first_window_id = window_id`, and `previous_window_id = None`
internally.
- Fork reconstruction intentionally uses the same rollout reconstruction
path; consumers that need to distinguish copied initial-window metadata
can use the rollout `thread_id`.
- Legacy compactions without `window_number` still use compaction-count
fallback accounting instead of being reset to window 0 by the
initial-window fallback.
- Compacted rollout metadata still takes precedence once compaction
records exist, preserving the richer chain fields there.

## JSONL Shape

Real rollout JSONL is one object per line. This example is expanded for
readability, but shows the new initial `session_meta.context_window`
record followed by the existing compacted rollout item shape that also
carries window IDs:

```jsonl
{
  "timestamp": "2026-06-22T12:00:00.000Z",
  "type": "session_meta",
  "payload": {
    "session_id": "<THREAD_ID>",
    "id": "<THREAD_ID>",
    "timestamp": "2026-06-22T12:00:00.000Z",
    "cwd": "/repo",
    "originator": "codex",
    "cli_version": "0.0.0",
    "source": "cli",
    "model_provider": "<MODEL_PROVIDER>",
    "context_window": {
      "window_id": "<INITIAL_WINDOW_ID>"
    }
  }
}
...
{
  "timestamp": "2026-06-22T12:34:56.000Z",
  "type": "compacted",
  "payload": {
    "message": "<COMPACTION_SUMMARY>",
    "replacement_history": [
      "..."
    ],
    "window_number": 1,
    "first_window_id": "<INITIAL_WINDOW_ID>",
    "previous_window_id": "<INITIAL_WINDOW_ID>",
    "window_id": "<NEXT_WINDOW_ID>"
  }
}
```

The nested `context_window` object is intentional: it gives rollout
consumers a stable namespace for context-window metadata while only
writing the non-derivable initial `window_id`. For the initial window,
`window_number`, `first_window_id`, and `previous_window_id` are derived
internally instead of being written to the rollout.

## Verification

- `just test -p codex-protocol`
- `just test -p codex-rollout
recorder_materializes_on_flush_with_pending_items`
- `just test -p codex-core reconstruct_history`
- `just test -p codex-core
record_initial_history_reconstructs_forked_transcript`
- `just test -p codex-thread-store`
- `just test -p codex-state`
- `just test -p codex-app-server
thread_read_returns_summary_without_turns`
- `just test -p codex-rollout persistence_metrics`
2026-06-23 21:50:50 +00:00
viyatb-oai 50eee505a3 feat(guardian): include connected account email in app reviews (#27045)
## Why

auto review reviews Codex App tool calls using connector metadata such
as the app ID, name, and description. That metadata does not identify
the account behind the OAuth connection.

For Google Drive, this means auto review cannot distinguish a Drive
connection authenticated as `user@email.com` from a personal Drive
account. Uploading work data can therefore look like a transfer to a
personal destination even though the connector service already knows the
authenticated account email.

## What changed

- Read `_meta._codex_apps.connected_account_email` while resolving
approval metadata for built-in Codex App tools.
- Include the connected account email in the structured MCP tool action
sent to auto review.
- Trim empty values and omit the field when the connector link has no
account email.
- Update existing auto review request constructors and add coverage for
request construction and JSON serialization.

## Security

Only metadata from the trusted built-in `codex_apps` MCP server is
accepted. Custom MCP servers cannot inject a connected account email
into auto review reviews; the new regression test verifies that spoofed
metadata is ignored.

The email is used only in auto review's private review request. This
change does not add it to model-visible tool descriptions, app-server
approval events, or auto review assessment/review analytics.
2026-06-23 20:33:44 +00:00
sayan-oai 4cc6a4bab5 core: use current step environments for tools (#29547)
## Why

With deferred executors, an environment can become ready between two
sampling requests in the same turn. The model-visible environment
update, advertised tools, and eventual tool execution must all describe
the same request-time view.

Otherwise, a request built while only environment B is ready can
advertise a tool without an `environment_id`; if higher-priority
environment A becomes ready before execution, that call could silently
run in A instead.

This PR is stacked on #29527.

## Design

`run_turn` captures one `Arc<StepContext>` at each sampling-request
boundary. That step owns the request's `TurnContext` and environment
snapshot.

- World-state environment updates and tool planning borrow that same
step.
- `ToolCallRuntime` retains the `Arc` while asynchronous tool calls
execute.
- `ToolInvocation` carries the step to handlers; its temporary `turn`
compatibility field is derived from the same object.
- `ToolRouter` does not retain `StepContext`; it only uses it while
constructing the request's tool set.
- With `DeferredExecutor` disabled, step capture keeps using the
environments frozen at turn start.

Simply: every sampling request gets one consistent picture of its
environments, from what the model sees through where its tool calls run.

## What changed

- Build environment-dependent tool specs from the current request's
`StepContext`.
- Use that same step for unified exec, legacy shell, `apply_patch`,
`view_image`, and `request_permissions` execution.
- Hide environment-backed tools, including `request_permissions`, while
no environment is attached.
- Resolve legacy shell paths and metadata from the selected step
environment instead of the stale turn-start environment.
- Capture explicit steps at non-turn-loop boundaries such as compaction,
prompt debug, and startup prewarm.
- Reconcile prompt-debug history from the same step used to build its
tools.

## Follow-up

- Bind yielded code-mode cells to the tool runtime that created them, so
nested calls made after yielding continue to use the originating
request's `StepContext`.

## Test plan

- `just test -p codex-core
deferred_executor_updates_context_and_tools_after_startup`
- `just test -p codex-core
environment_count_controls_environment_backed_tools`
- `just test -p codex-core
build_prompt_input_includes_context_and_user_message`
2026-06-23 20:21:13 +00:00
Dylan Hurd 2cf2a6a844 chore(core) rm AskForApproval::OnFailure (#28418)
## Summary
Deletes the OnFailure variant of the `AskForApproval` enum. This option
has been deprecated since #11631.

## Testing
- [x] Tests pass
2026-06-23 12:13:54 -07:00
Owen Lin 8d80b0176a app-server: document thread and turn IDs are UUID7 (#27714)
It's actually a very nice property that these are UUID7s, so documenting
them so we think twice before changing it away from UUID7s in the
future.
2026-06-23 11:46:36 -07:00