codex

reuse encoded Responses request bodies (#28327 )

## Why

Responses HTTP requests were converted from `ResponsesApiRequest` into a
full `serde_json::Value`. `EndpointSession` then deep-cloned that value
for each retry, and the transport serialized and compressed it again
before every send.

Large histories make those copies expensive. Retry attempts should reuse
the same immutable request bytes.

## What

- Serialize standard Responses requests directly into a ref-counted
`EncodedJsonBody`.
- Preserve the Azure path that attaches item IDs before encoding.
- Prepare JSON, compression, and derived content headers once before the
retry loop.
- Clone the prepared request per attempt so body clones only bump the
`Bytes` reference count.
- Keep auth inside the retry loop. Signing auth sees the exact final
headers and body bytes that the transport sends.
- Preserve request-body TRACE output. With TRACE plus compression,
retain the original JSON bytes for logging; normal requests keep only
the final wire bytes.
- Leave non-Responses endpoint bodies on the existing `Value` path.

## Performance

A temporary release-mode measurement used a 10 MiB JSON body and 10
retry preparations:

- old `Value` clone + serialize path: 30 ms total
- prepared shared-byte path: less than 1 ms total

That is about 3 ms avoided per retry for this payload on the test
machine. Each retry also stops allocating another request-sized JSON
tree and serialized buffer. Without TRACE, compressed requests retain
only the final compressed wire bytes.

## Validation

- `just test -p codex-client` — 28 passed
- `just test -p codex-api` — 125 passed
- `just fix -p codex-client`
- `just fix -p codex-api`

jif · 2026-06-15 19:11:26 +02:00

495da45643

feat: add session_id (#20437 )

## Summary

Related to
https://openai.slack.com/archives/C095U48JNL9/p1777537279707449
TLDR:
We update the meaning of session ids and thread ids:
* thread_id stays as now
* session_id become a shared id between every thread under a /root
thread (i.e. every sub-agent share the same session id)

This PR introduces an explicit `SessionId` and threads it through the
protocol/client boundary so `session_id` and `thread_id` can diverge
when they need to, while preserving compatibility for older serialized
`session_configured` events.

---------

Co-authored-by: Codex <noreply@openai.com>

jif-oai · 2026-05-06 10:48:37 +02:00

a98623511b

feat: add opt-in provider runtime abstraction (#17713 )

## Summary

- Add `codex-model-provider` as the runtime home for model-provider
behavior that does not belong in `codex-core`, `codex-login`, or
`codex-api`.
- The new crate wraps configured `ModelProviderInfo` in a
`ModelProvider` trait object that can resolve the API provider config,
provider-scoped auth manager, and request auth provider for each call.
- This centralizes provider auth behavior in one place today, and gives
us an extension point for future provider-specific auth, model listing,
request setup, and related runtime behavior.

## Tests
Ran tests manually to make sure that provider auth under different
configs still work as expected.

---------

Co-authored-by: pakrym-oai <pakrym@openai.com>

Celia Chen · 2026-04-17 02:27:45 +00:00

a803790a10

[codex] reduce module visibility (#16978 )

## Summary
- reduce public module visibility across Rust crates, preferring private
or crate-private modules with explicit crate-root public exports
- update external call sites and tests to use the intended public crate
APIs instead of reaching through module trees
- add the module visibility guideline to AGENTS.md

## Validation
- `cargo check --workspace --all-targets --message-format=short` passed
before the final fix/format pass
- `just fix` completed successfully
- `just fmt` completed successfully
- `git diff --check` passed

pakrym-oai · 2026-04-07 08:03:35 -07:00

413c1e1fdf

feat(app-server, core): add more spans (#14479 )

## Description

This PR expands tracing coverage across app-server thread startup, core
session initialization, and the Responses transport layer. It also gives
core dispatch spans stable operation-specific names so traces are easier
to follow than the old generic `submission_dispatch` spans.

Also use `fmt::Display` for types that we serialize in traces so we send
strings instead of rust types

Owen Lin · 2026-03-13 13:16:33 -07:00

014e19510d

Responses: set x-client-request-id as convesration_id when talking to responses (#14312 )

Right now we're sending the header session_id to responses which is
ignored/dropped. This sets a useful x-client-request-id to the
conversation_id.

Channing Conger · 2026-03-11 12:33:10 -07:00

fd4a673525

Remove ApiPrompt (#11265 )

Keep things simple and build a full Responses API request request right
in the model client

pakrym-oai · 2026-02-10 16:12:31 +00:00

3322b99900

feat: clean codex-api part 1 (#10501 )

jif-oai · 2026-02-03 14:08:09 +00:00

d5e7248958

feat: drop wire_api from clients (#10498 )

jif-oai · 2026-02-03 12:43:09 +00:00

88598b9402

chore: nuke chat/completions API (#10157 )

jif-oai · 2026-02-03 11:31:57 +00:00

d2394a2494

Turn-state sticky routing per turn (#9332 )

- capture the header from SSE/WS handshakes, store it per
ModelClientSession using `Oncelock`, echo it on turn-scoped requests,
and add SSE+WS integration tests for within-turn persistence +
cross-turn reset.

- keep `x-codex-turn-state` sticky within a user turn to maintain
routing continuity for retries/tool follow-ups.

Ahmed Ibrahim · 2026-01-16 09:30:11 -08:00

ebdd8795e9

Add feature for optional request compression (#8767 )

Adds a new feature
`enable_request_compression` that will compress using zstd requests to
the codex-backend. Currently only enabled for codex-backend so only enabled for openai providers when using chatgpt::auth even when the feature is enabled

Added a new info log line too for evaluating the compression ratio and
overhead off compressing before requesting. You can enable with
`RUST_LOG=$RUST_LOG,codex_client::transport=info`

```
2026-01-06T00:09:48.272113Z  INFO codex_client::transport: Compressed request body with zstd pre_compression_bytes=28914 post_compression_bytes=11485 compression_duration_ms=0
```

Channing Conger · 2026-01-07 13:21:40 -08:00

21c6d40a44

feat: experimental menu (#8071 )

This will automatically render any `Stage::Beta` features.

The change only gets applied to the *next session*. This started as a
bug but actually this is a good thing to prevent out of distribution
push

<img width="986" height="288" alt="Screenshot 2025-12-15 at 15 38 35"
src="https://github.com/user-attachments/assets/78b7a71d-0e43-4828-a118-91c5237909c7"
/>


<img width="509" height="109" alt="Screenshot 2025-12-15 at 17 35 44"
src="https://github.com/user-attachments/assets/6933de52-9b66-4abf-b58b-a5f26d5747e2"
/>

jif-oai · 2025-12-17 17:08:03 +00:00

ac6ba286aa

nit: trace span for regular task (#8053 )

Logs are too spammy

---------

Co-authored-by: Anton Panasenko <apanasenko@openai.com>

jif-oai · 2025-12-16 16:53:15 +00:00

d7482510b1

[codex] add otel tracing (#7844 )

Anton Panasenko · 2025-12-12 17:07:17 -08:00

ad7b9d63c3

chore: proper client extraction (#6996 )

jif-oai · 2025-11-25 18:06:12 +00:00

4502b1b263

16 Commits