codex

feat(tui): switch to tree-sitter-highlight bash highlighting (#4666 )

use tree-sitter-highlight instead of custom logic over the tree-sitter
tree to highlight bash.

Jeremy Rose · 2025-10-07 16:20:12 -07:00

b8b04514bc

[MCP] Upgrade rmcp to 0.8 (#4774 )

The version with the well-known discovery and my MCP client name change
were just released

https://github.com/modelcontextprotocol/rust-sdk/releases

Gabriel Peal · 2025-10-05 18:12:37 -04:00

7fa5e95c1f

Use assert_matches (#4756 )

assert_matches is soon to be in std but is experimental for now.

pakrym-oai · 2025-10-05 21:12:31 +00:00

5c42419b02

Fix oauth .well-known metadata discovery (#4677 )

This picks up https://github.com/modelcontextprotocol/rust-sdk/pull/459
which is required for proper well-known metadata discovery for some MCPs
such as Figma.

Gabriel Peal · 2025-10-03 17:15:19 -04:00

bde468ff8d

[MCP] Add support for MCP Oauth credentials (#4517 )

This PR adds oauth login support to streamable http servers when
`experimental_use_rmcp_client` is enabled.

This PR is large but represents the minimal amount of work required for
this to work. To keep this PR smaller, login can only be done with
`codex mcp login` and `codex mcp logout` but it doesn't appear in `/mcp`
or `codex mcp list` yet. Fingers crossed that this is the last large MCP
PR and that subsequent PRs can be smaller.

Under the hood, credentials are stored using platform credential
managers using the [keyring crate](https://crates.io/crates/keyring).
When the keyring isn't available, it falls back to storing credentials
in `CODEX_HOME/.credentials.json` which is consistent with how other
coding agents handle authentication.

I tested this on macOS, Windows, WSL (ubuntu), and Linux. I wasn't able
to test the dbus store on linux but did verify that the fallback works.

One quirk is that if you have credentials, during development, every
build will have its own ad-hoc binary so the keyring won't recognize the
reader as being the same as the write so it may ask for the user's
password. I may add an override to disable this or allow
users/enterprises to opt-out of the keyring storage if it causes issues.

<img width="5064" height="686" alt="CleanShot 2025-09-30 at 19 31 40"
src="https://github.com/user-attachments/assets/9573f9b4-07f1-4160-83b8-2920db287e2d"
/>
<img width="745" height="486" alt="image"
src="https://github.com/user-attachments/assets/9562649b-ea5f-4f22-ace2-d0cb438b143e"
/>

Gabriel Peal · 2025-10-03 13:43:12 -04:00

1d17ca1fa3

chore: refactor tool handling (#4510 )

# Tool System Refactor

- Centralizes tool definitions and execution in `core/src/tools/*`:
specs (`spec.rs`), handlers (`handlers/*`), router (`router.rs`),
registry/dispatch (`registry.rs`), and shared context (`context.rs`).
One registry now builds the model-visible tool list and binds handlers.
- Router converts model responses to tool calls; Registry dispatches
with consistent telemetry via `codex-rs/otel` and unified error
handling. Function, Local Shell, MCP, and experimental `unified_exec`
all flow through this path; legacy shell aliases still work.
- Rationale: reduce per‑tool boilerplate, keep spec/handler in sync, and
make adding tools predictable and testable.

Example: `read_file`
- Spec: `core/src/tools/spec.rs` (see `create_read_file_tool`,
registered by `build_specs`).
- Handler: `core/src/tools/handlers/read_file.rs` (absolute `file_path`,
1‑indexed `offset`, `limit`, `L#: ` prefixes, safe truncation).
- E2E test: `core/tests/suite/read_file.rs` validates the tool returns
the requested lines.

## Next steps:
- Decompose `handle_container_exec_with_params` 
- Add parallel tool calls

jif-oai · 2025-10-03 13:21:06 +01:00

33d3ecbccc

canonicalize display of Agents.md paths on Windows. (#4577 )

Canonicalize path on Windows to 
- remove unattractive path prefixes such as `\\?\`
- simplify it (`../AGENTS.md` vs
`C:\Users\iceweasel\code\coded\Agents.md`)
before: <img width="1110" height="45" alt="Screenshot 2025-10-01 123520"
src="https://github.com/user-attachments/assets/48920ae6-d89c-41b8-b4ea-df5c18fb5fad"
/>

after: 
<img width="585" height="46" alt="Screenshot 2025-10-01 123612"
src="https://github.com/user-attachments/assets/70a1761a-9d97-4836-b14c-670b6f13e608"
/>

iceweasel-oai · 2025-10-01 14:33:19 -07:00

6f97ec4990

fix: remove mcp-types from app server protocol (#4537 )

We continue the separation between `codex app-server` and `codex
mcp-server`.

In particular, we introduce a new crate, `codex-app-server-protocol`,
and migrate `codex-rs/protocol/src/mcp_protocol.rs` into it, renaming it
`codex-rs/app-server-protocol/src/protocol.rs`.

Because `ConversationId` was defined in `mcp_protocol.rs`, we move it
into its own file, `codex-rs/protocol/src/conversation_id.rs`, and
because it is referenced in a ton of places, we have to touch a lot of
files as part of this PR.

We also decide to get away from proper JSON-RPC 2.0 semantics, so we
also introduce `codex-rs/app-server-protocol/src/jsonrpc_lite.rs`, which
is basically the same `JSONRPCMessage` type defined in `mcp-types`
except with all of the `"jsonrpc": "2.0"` removed.

Getting rid of `"jsonrpc": "2.0"` makes our serialization logic
considerably simpler, as we can lean heavier on serde to serialize
directly into the wire format that we use now.

Michael Bolin · 2025-10-01 02:16:26 +00:00

5881c0d6d4

fix: use macros to ensure request/response symmetry (#4529 )

Manually curating `protocol-ts/src/lib.rs` was error-prone, as expected.
I finally asked Codex to write some Rust macros so we can ensure that:

- For every variant of `ClientRequest` and `ServerRequest`, there is an
associated `params` and `response` type.
- All response types are included automatically in the output of `codex
generate-ts`.

Michael Bolin · 2025-09-30 18:06:05 -07:00

32853ecbc5

Add cloud tasks (#3197 )

Adds a TUI for managing, applying, and creating cloud tasks

easong-openai · 2025-09-30 10:10:33 +00:00

5b038135de

fix: separate codex mcp into codex mcp-server and codex app-server (#4471 )

This is a very large PR with some non-backwards-compatible changes.

Historically, `codex mcp` (or `codex mcp serve`) started a JSON-RPC-ish
server that had two overlapping responsibilities:

- Running an MCP server, providing some basic tool calls.
- Running the app server used to power experiences such as the VS Code
extension.

This PR aims to separate these into distinct concepts:

- `codex mcp-server` for the MCP server
- `codex app-server` for the "application server"

Note `codex mcp` still exists because it already has its own subcommands
for MCP management (`list`, `add`, etc.)

The MCP logic continues to live in `codex-rs/mcp-server` whereas the
refactored app server logic is in the new `codex-rs/app-server` folder.
Note that most of the existing integration tests in
`codex-rs/mcp-server/tests/suite` were actually for the app server, so
all the tests have been moved with the exception of
`codex-rs/mcp-server/tests/suite/mod.rs`.

Because this is already a large diff, I tried not to change more than I
had to, so `codex-rs/app-server/tests/common/mcp_process.rs` still uses
the name `McpProcess` for now, but I will do some mechanical renamings
to things like `AppServer` in subsequent PRs.

While `mcp-server` and `app-server` share some overlapping functionality
(like reading streams of JSONL and dispatching based on message types)
and some differences (completely different message types), I ended up
doing a bit of copypasta between the two crates, as both have somewhat
similar `message_processor.rs` and `outgoing_message.rs` files for now,
though I expect them to diverge more in the near future.

One material change is that of the initialize handshake for `codex
app-server`, as we no longer use the MCP types for that handshake.
Instead, we update `codex-rs/protocol/src/mcp_protocol.rs` to add an
`Initialize` variant to `ClientRequest`, which takes the `ClientInfo`
object we need to update the `USER_AGENT_SUFFIX` in
`codex-rs/app-server/src/message_processor.rs`.

One other material change is in
`codex-rs/app-server/src/codex_message_processor.rs` where I eliminated
a use of the `send_event_as_notification()` method I am generally trying
to deprecate (because it blindly maps an `EventMsg` into a
`JSONNotification`) in favor of `send_server_notification()`, which
takes a `ServerNotification`, as that is intended to be a custom enum of
all notification types supported by the app server. So to make this
update, I had to introduce a new variant of `ServerNotification`,
`SessionConfigured`, which is a non-backwards compatible change with the
old `codex mcp`, and clients will have to be updated after the next
release that contains this PR. Note that
`codex-rs/app-server/tests/suite/list_resume.rs` also had to be update
to reflect this change.

I introduced `codex-rs/utils/json-to-toml/src/lib.rs` as a small utility
crate to avoid some of the copying between `mcp-server` and
`app-server`.

Michael Bolin · 2025-09-30 07:06:18 +00:00

d9dbf48828

OpenTelemetry events (#2103 )

### Title

## otel

Codex can emit [OpenTelemetry](https://opentelemetry.io/) **log events**
that
describe each run: outbound API requests, streamed responses, user
input,
tool-approval decisions, and the result of every tool invocation. Export
is
**disabled by default** so local runs remain self-contained. Opt in by
adding an
`[otel]` table and choosing an exporter.

```toml
[otel]
environment = "staging"   # defaults to "dev"
exporter = "none"          # defaults to "none"; set to otlp-http or otlp-grpc to send events
log_user_prompt = false    # defaults to false; redact prompt text unless explicitly enabled
```

Codex tags every exported event with `service.name = "codex-cli"`, the
CLI
version, and an `env` attribute so downstream collectors can distinguish
dev/staging/prod traffic. Only telemetry produced inside the
`codex_otel`
crate—the events listed below—is forwarded to the exporter.

### Event catalog

Every event shares a common set of metadata fields: `event.timestamp`,
`conversation.id`, `app.version`, `auth_mode` (when available),
`user.account_id` (when available), `terminal.type`, `model`, and
`slug`.

With OTEL enabled Codex emits the following event types (in addition to
the
metadata above):

- `codex.api_request`
  - `cf_ray` (optional)
  - `attempt`
  - `duration_ms`
  - `http.response.status_code` (optional)
  - `error.message` (failures)
- `codex.sse_event`
  - `event.kind`
  - `duration_ms`
  - `error.message` (failures)
  - `input_token_count` (completion only)
  - `output_token_count` (completion only)
  - `cached_token_count` (completion only, optional)
  - `reasoning_token_count` (completion only, optional)
  - `tool_token_count` (completion only)
- `codex.user_prompt`
  - `prompt_length`
  - `prompt` (redacted unless `log_user_prompt = true`)
- `codex.tool_decision`
  - `tool_name`
  - `call_id`
- `decision` (`approved`, `approved_for_session`, `denied`, or `abort`)
  - `source` (`config` or `user`)
- `codex.tool_result`
  - `tool_name`
  - `call_id`
  - `arguments`
  - `duration_ms` (execution time for the tool)
  - `success` (`"true"` or `"false"`)
  - `output`

### Choosing an exporter

Set `otel.exporter` to control where events go:

- `none` – leaves instrumentation active but skips exporting. This is
the
  default.
- `otlp-http` – posts OTLP log records to an OTLP/HTTP collector.
Specify the
  endpoint, protocol, and headers your collector expects:

  ```toml
  [otel]
  exporter = { otlp-http = {
    endpoint = "https://otel.example.com/v1/logs",
    protocol = "binary",
    headers = { "x-otlp-api-key" = "${OTLP_TOKEN}" }
  }}
  ```

- `otlp-grpc` – streams OTLP log records over gRPC. Provide the endpoint
and any
  metadata headers:

  ```toml
  [otel]
  exporter = { otlp-grpc = {
    endpoint = "https://otel.example.com:4317",
    headers = { "x-otlp-meta" = "abc123" }
  }}
  ```

If the exporter is `none` nothing is written anywhere; otherwise you
must run or point to your
own collector. All exporters run on a background batch worker that is
flushed on
shutdown.

If you build Codex from source the OTEL crate is still behind an `otel`
feature
flag; the official prebuilt binaries ship with the feature enabled. When
the
feature is disabled the telemetry hooks become no-ops so the CLI
continues to
function without the extra dependencies.

---------

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

vishnu-oai · 2025-09-29 11:30:55 -07:00

04c1782e52

chore: remove responses-api-proxy from the multitool (#4404 )

This removes the `codex responses-api-proxy` subcommand in favor of
running it as a standalone CLI.

As part of this change, we:

- remove the dependency on `tokio`/`async/await` as well as `codex_arg0`
- introduce the use of `pre_main_hardening()` so `CODEX_SECURE_MODE=1`
is not required

---
[//]: # (BEGIN SAPLING FOOTER)
Stack created with [Sapling](https://sapling-scm.com). Best reviewed
with [ReviewStack](https://reviewstack.dev/openai/codex/pull/4404).
* #4406
* __->__ #4404
* #4403

Michael Bolin · 2025-09-28 15:22:27 -07:00

99841332e2

chore: move pre_main_hardening() utility into its own crate (#4403 )

Michael Bolin · 2025-09-28 14:35:14 -07:00

43615becf0

[MCP] Introduce an experimental official rust sdk based mcp client (#4252 )

The [official Rust
SDK](https://github.com/modelcontextprotocol/rust-sdk/tree/57fc428c578a1a3fe851ee0838bf068bda120eb3)
has come a long way since we first started our mcp client implementation
5 months ago and, today, it is much more complete than our own
stdio-only implementation.

This PR introduces a new config flag `experimental_use_rmcp_client`
which will use a new mcp client powered by the sdk instead of our own.

To keep this PR simple, I've only implemented the same stdio MCP
functionality that we had but will expand on it with future PRs.

---------

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

Gabriel Peal · 2025-09-26 13:13:37 -04:00

e555a36c6a

feat: introduce responses-api-proxy (#4246 )

Details are in `responses-api-proxy/README.md`, but the key contribution
of this PR is a new subcommand, `codex responses-api-proxy`, which reads
the auth token for use with the OpenAI Responses API from `stdin` at
startup and then proxies `POST` requests to `/v1/responses` over to
`https://api.openai.com/v1/responses`, injecting the auth token as part
of the `Authorization` header.

The expectation is that `codex responses-api-proxy` is launched by a
privileged user who has access to the auth token so that it can be used
by unprivileged users of the Codex CLI on the same host.

If the client only has one user account with `sudo`, one option is to:

- run `sudo codex responses-api-proxy --http-shutdown --server-info
/tmp/server-info.json` to start the server
- record the port written to `/tmp/server-info.json`
- relinquish their `sudo` privileges (which is irreversible!) like so:

```
sudo deluser $USER sudo || sudo gpasswd -d $USER sudo || true
```

- use `codex` with the proxy (see `README.md`)
- when done, make a `GET` request to the server using the `PORT` from
`server-info.json` to shut it down:

```shell
curl --fail --silent --show-error "http://127.0.0.1:$PORT/shutdown"
```

To protect the auth token, we:

- allocate a 1024 byte buffer on the stack and write `"Bearer "` into it
to start
- we then read from `stdin`, copying to the contents into the buffer
after the prefix
- after verifying the input looks good, we create a `String` from that
buffer (so the data is now on the heap)
- we zero out the stack-allocated buffer using
https://crates.io/crates/zeroize so it is not optimized away by the
compiler
- we invoke `.leak()` on the `String` so we can treat its contents as a
`&'static str`, as it will live for the rest of the processs
- on UNIX, we `mlock(2)` the memory backing the `&'static str`
- when using the `&'static str` when building an HTTP request, we use
`HeaderValue::from_static()` to avoid copying the `&str`
- we also invoke `.set_sensitive(true)` on the `HeaderValue`, which in
theory indicates to other parts of the HTTP stack that the header should
be treated with "special care" to avoid leakage:


https://github.com/hyperium/http/blob/439d1c50d71e3be3204b6c4a1bf2255ed78e1f93/src/header/value.rs#L346-L376

Michael Bolin · 2025-09-26 08:19:00 -07:00

c549481513

ref: state - 2 (#4229 )

Extracting tasks in a module and start abstraction behind a Trait (more
to come on this but each task will be tackled in a dedicated PR)
The goal was to drop the ActiveTask and to have a (potentially) set of
tasks during each turn

jif-oai · 2025-09-26 13:49:08 +00:00

1fc3413a46

feat: add support for CODEX_SECURE_MODE=1 to restrict process observability (#4220 )

Because the `codex` process could contain sensitive information in
memory, such as API keys, we add logic so that when
`CODEX_SECURE_MODE=1` is specified, we avail ourselves of whatever the
operating system provides to restrict observability/tampering, which
includes:

- disabling `ptrace(2)`, so it is not possible to attach to the process
with a debugger, such as `gdb`
- disabling core dumps

Admittedly, a user with root privileges can defeat these safeguards.

For now, we only add support for this in the `codex` multitool, but we
may ultimately want to support this in some of the smaller CLIs that are
buildable out of our Cargo workspace.

Michael Bolin · 2025-09-25 10:02:28 -07:00

d61dea6fe6

chore(deps): bump chrono from 0.4.41 to 0.4.42 in /codex-rs (#4028 )

Bumps [chrono](https://github.com/chronotope/chrono) from 0.4.41 to
0.4.42.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/chronotope/chrono/releases">chrono's
releases</a>.</em></p>
<blockquote>
<h2>0.4.42</h2>
<h2>What's Changed</h2>
<ul>
<li>Add fuzzer for DateTime::parse_from_str by <a
href="https://github.com/tyler92"><code>@tyler92</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1700">chronotope/chrono#1700</a></li>
<li>Fix wrong amount of micro/milliseconds by <a
href="https://github.com/nmlt"><code>@nmlt</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1703">chronotope/chrono#1703</a></li>
<li>Add warning about MappedLocalTime and wasm by <a
href="https://github.com/lutzky"><code>@lutzky</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1702">chronotope/chrono#1702</a></li>
<li>Fix incorrect parsing of fixed-length second fractions by <a
href="https://github.com/chris-leach"><code>@chris-leach</code></a> in
<a
href="https://redirect.github.com/chronotope/chrono/pull/1705">chronotope/chrono#1705</a></li>
<li>Fix cfgs for <code>wasm32-linux</code> support by <a
href="https://github.com/arjunr2"><code>@arjunr2</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1707">chronotope/chrono#1707</a></li>
<li>Fix OpenHarmony's <code>tzdata</code> parsing by <a
href="https://github.com/ldm0"><code>@ldm0</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1679">chronotope/chrono#1679</a></li>
<li>Convert NaiveDate to/from days since unix epoch by <a
href="https://github.com/findepi"><code>@findepi</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1715">chronotope/chrono#1715</a></li>
<li>Add <code>?Sized</code> bound to related methods of
<code>DelayedFormat::write_to</code> by <a
href="https://github.com/Huliiiiii"><code>@Huliiiiii</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1721">chronotope/chrono#1721</a></li>
<li>Add <code>from_timestamp_secs</code> method to <code>DateTime</code>
by <a href="https://github.com/jasonaowen"><code>@jasonaowen</code></a>
in <a
href="https://redirect.github.com/chronotope/chrono/pull/1719">chronotope/chrono#1719</a></li>
<li>Migrate to core::error::Error by <a
href="https://github.com/benbrittain"><code>@benbrittain</code></a> in
<a
href="https://redirect.github.com/chronotope/chrono/pull/1704">chronotope/chrono#1704</a></li>
<li>Upgrade to windows-bindgen 0.63 by <a
href="https://github.com/djc"><code>@djc</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1730">chronotope/chrono#1730</a></li>
<li>strftime: simplify error handling by <a
href="https://github.com/djc"><code>@djc</code></a> in <a
href="https://redirect.github.com/chronotope/chrono/pull/1731">chronotope/chrono#1731</a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/chronotope/chrono/commit/f3fd15f976c8c8e56d97eda6237af4d485ba2297"><code>f3fd15f</code></a>
Bump version to 0.4.42</li>
<li><a
href="https://github.com/chronotope/chrono/commit/5cf56035007f291b1b8f457fa3bfc79fb367419a"><code>5cf5603</code></a>
strftime: add regression test case</li>
<li><a
href="https://github.com/chronotope/chrono/commit/a6231701ee934cbbeb595fe71328fcbbf1b584d5"><code>a623170</code></a>
strftime: simplify error handling</li>
<li><a
href="https://github.com/chronotope/chrono/commit/36fbfb1221da05b1482eb9dd18254e6bd736cb31"><code>36fbfb1</code></a>
strftime: move specifier handling out of match to reduce rightward
drift</li>
<li><a
href="https://github.com/chronotope/chrono/commit/7f413c363b74e293d495dc6109335c02dda9d629"><code>7f413c3</code></a>
strftime: yield None early</li>
<li><a
href="https://github.com/chronotope/chrono/commit/9d5dfe164098186bfff8af7d5eecbb05d7712d4d"><code>9d5dfe1</code></a>
strftime: outline constants</li>
<li><a
href="https://github.com/chronotope/chrono/commit/e5f6be7db4a0c2756cad0a7c8186a5a180873f7a"><code>e5f6be7</code></a>
strftime: move error() method below caller</li>
<li><a
href="https://github.com/chronotope/chrono/commit/d516c2764d74e467fa37e25e8e88d5633478bafa"><code>d516c27</code></a>
strftime: merge impl blocks</li>
<li><a
href="https://github.com/chronotope/chrono/commit/0ee2172fb92df4e0be4cf7a733c860226eec37a0"><code>0ee2172</code></a>
strftime: re-order items to keep impls together</li>
<li><a
href="https://github.com/chronotope/chrono/commit/757a8b0226e9c0a23b5334c7dc0986f1e487b8ac"><code>757a8b0</code></a>
Upgrade to windows-bindgen 0.63</li>
<li>Additional commits viewable in <a
href="https://github.com/chronotope/chrono/compare/v0.4.41...v0.4.42">compare
view</a></li>
</ul>
</details>
<br />


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dependabot[bot] · 2025-09-24 16:53:26 +00:00

bffdbec2c5

chore(deps): bump unicode-width from 0.1.14 to 0.2.1 in /codex-rs (#2156 )

Bumps [unicode-width](https://github.com/unicode-rs/unicode-width) from
0.1.14 to 0.2.1.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/0085e91db72ae9a4498e62030d9651f1c1d09b4f"><code>0085e91</code></a>
Publish 0.2.1</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/6db0c14cbde54b1343335be38c7fdcb6451efb25"><code>6db0c14</code></a>
Remove <code>compiler-builtins</code> from <code>rustc-dep-of-std</code>
dependencies (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/77">#77</a>)</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/0bccd3f1b55b15e7796a5f591a9f24ef28889b1b"><code>0bccd3f</code></a>
update copyright year (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/76">#76</a>)</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/7a7fcdc8134a67e0b8deaac7deb4f12559550eaf"><code>7a7fcdc</code></a>
Support Unicode 16 (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/74">#74</a>)</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/82d7136b494ded1fe83a269e673fd85dfc4a92a6"><code>82d7136</code></a>
Advertise and enforce MSRV (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/73">#73</a>)</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/e77b2929bc863841147786ef573b297581f94fe4"><code>e77b292</code></a>
Make characters with <code>Line_Break=Ambiguous</code> ambiguous (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/61">#61</a>)</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/5a7fced663028d86d603cffbddcabedfdf7c7199"><code>5a7fced</code></a>
Update version number in Readme (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/70">#70</a>)</li>
<li><a
href="https://github.com/unicode-rs/unicode-width/commit/79eab0d9fc2060783b43046f9611648dcd35172f"><code>79eab0d</code></a>
Publish 0.2.0 with newlines treated as width 1 (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/68">#68</a>)</li>
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href="https://github.com/unicode-rs/unicode-width/compare/v0.1.14...v0.2.1">compare
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dependabot[bot] · 2025-09-24 16:33:46 +00:00

353a5c2046

chore: remove once_cell dependency from multiple crates (#4154 )

This commit removes the `once_cell` dependency from `Cargo.toml` files
in the `codex-rs` and `apply-patch` directories, replacing its usage
with `std::sync::LazyLock` and `std::sync::OnceLock` where applicable.
This change simplifies the dependency tree and utilizes standard library
features for lazy initialization.

# External (non-OpenAI) Pull Request Requirements

Before opening this Pull Request, please read the dedicated
"Contributing" markdown file or your PR may be closed:
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Tien Nguyen · 2025-09-24 09:15:57 -07:00

00c7f7a16c

chore: extract readiness in a dedicated utils crate (#4140 )

Create an `utils` directory for the small utils crates

jif-oai · 2025-09-24 10:15:54 +00:00

5b910f1f05

chore(deps): bump tempfile from 3.20.0 to 3.22.0 in /codex-rs (#4030 )

Bumps [tempfile](https://github.com/Stebalien/tempfile) from 3.20.0 to
3.22.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/Stebalien/tempfile/blob/master/CHANGELOG.md">tempfile's
changelog</a>.</em></p>
<blockquote>
<h2>3.22.0</h2>
<ul>
<li>Updated <code>windows-sys</code> requirement to allow version
0.61.x</li>
<li>Remove <code>unstable-windows-keep-open-tempfile</code>
feature.</li>
</ul>
<h2>3.21.0</h2>
<ul>
<li>Updated <code>windows-sys</code> requirement to allow version
0.60.x</li>
</ul>
</blockquote>
</details>
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<summary>Commits</summary>
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<li><a
href="https://github.com/Stebalien/tempfile/commit/f720dbe098f847f3899d83305f565a5c46bb818d"><code>f720dbe</code></a>
chore: release 3.22.0</li>
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href="https://redirect.github.com/Stebalien/tempfile/issues/373">#373</a>)</li>
<li><a
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doc(builder): clarify permissions (<a
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<li><a
href="https://github.com/Stebalien/tempfile/commit/c7423f1761f569c60c504ffed0ef6e124430b162"><code>c7423f1</code></a>
doc(env): document the alternative to setting the tempdir (<a
href="https://redirect.github.com/Stebalien/tempfile/issues/371">#371</a>)</li>
<li><a
href="https://github.com/Stebalien/tempfile/commit/5af60ca9e3ca42c5135cd41df3e8a2bd5341b9fc"><code>5af60ca</code></a>
test(wasi): run a few tests that shouldn't have been disabled (<a
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test(tempdir): configure tempdir on wasi</li>
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dependabot[bot] · 2025-09-23 23:41:35 -07:00

f7d2f3e54d

feat: readiness tool (#4090 )

Readiness flag with token-based subscription and async wait function
that waits for all the subscribers to be ready

jif-oai · 2025-09-23 17:27:20 +01:00

6cd5309d91

feat: git tooling for undo (#3914 )

## Summary
Introduces a “ghost commit” workflow that snapshots the tree without
touching refs.
1. git commit-tree writes an unreferenced commit object from the current
index, optionally pointing to the current HEAD as its parent.
2. We then stash that commit id and use git restore --source <ghost> to
roll the worktree (and index) back to the recorded snapshot later on.

## Details
- Ghost commits live only as loose objects—we never update branches or
tags—so the repo history stays untouched while still giving us a full
tree snapshot.
- Force-included paths let us stage otherwise ignored files before
capturing the tree.
- Restoration rehydrates both tracked and force-included files while
leaving untracked/ignored files alone.

jif-oai · 2025-09-23 16:59:52 +01:00

e0fbc112c7

chore: clippy on redundant closure (#4058 )

Add redundant closure clippy rules and let Codex fix it by minimising
FQP

jif-oai · 2025-09-22 19:30:16 +00:00

be366a31ab

chore: more clippy rules 2 (#4057 )

The only file to watch is the cargo.toml
All the others come from just fix + a few manual small fix

The set of rules have been taken from the list of clippy rules
arbitrarily while trying to optimise the learning and style of the code
while limiting the loss of productivity

jif-oai · 2025-09-22 17:16:02 +00:00

e258ca61b4

chore: unify cargo versions (#4044 )

Unify cargo versions at root

jif-oai · 2025-09-22 16:47:01 +00:00

e5fe50d3ce

chore: enable clippy::redundant_clone (#3489 )

Created this PR by:

- adding `redundant_clone` to `[workspace.lints.clippy]` in
`cargo-rs/Cargol.toml`
- running `cargo clippy --tests --fix`
- running `just fmt`

Though I had to clean up one instance of the following that resulted:

```rust
let codex = codex;
```

Michael Bolin · 2025-09-11 11:59:37 -07:00

bec51f6c05

chore: require uninlined_format_args from clippy (#2845 )

- added `uninlined_format_args` to `[workspace.lints.clippy]` in the
`Cargo.toml` for the workspace
- ran `cargo clippy --tests --fix`
- ran `just fmt`

Michael Bolin · 2025-08-28 11:25:23 -07:00

74d2741729

protocol-ts (#2425 )

Michael Bolin · 2025-08-18 13:08:53 -07:00

fc6cfd5ecc

fix: introduce codex-protocol crate (#2355 )

Michael Bolin · 2025-08-15 12:44:40 -07:00

d262244725

Introduce --oss flag to use gpt-oss models (#1848 )

This adds support for easily running Codex backed by a local Ollama
instance running our new open source models. See
https://github.com/openai/gpt-oss for details.

If you pass in `--oss` you'll be prompted to install/launch ollama, and
it will automatically download the 20b model and attempt to use it.

We'll likely want to expand this with some options later to make the
experience smoother for users who can't run the 20b or want to run the
120b.

Co-authored-by: Michael Bolin <mbolin@openai.com>

easong-openai · 2025-08-05 11:31:11 -07:00

9285350842

Auto format toml (#1745 )

Add recommended extension and configure it to auto format prompt.

pakrym-oai · 2025-07-30 18:37:00 -07:00

51b6bdefbe

fix: move arg0 handling out of codex-linux-sandbox and into its own crate (#1697 )

Michael Bolin · 2025-07-28 08:31:24 -07:00

9102255854

fix: correctly wrap history items (#1685 )

The overall idea here is: skip ratatui for writing into scrollback,
because its primitives are wrong. We want to render full lines of text,
that will be wrapped natively by the terminal, and which we never plan
to update using ratatui (so the `Buffer` struct is overhead and in fact
an inhibition).

Instead, we use ANSI scrolling regions (link reference doc to come).
Essentially, we:
1. Define a scrolling region that extends from the top of the prompt
area all the way to the top of scrollback
2. Scroll that region up by N < (screen_height - viewport_height) lines,
in this PR N=1
3. Put our cursor at the top of the newly empty region
4. Print out our new text like normal

The terminal interactions here (write_spans and its dependencies) are
mostly extracted from ratatui.

Jeremy Rose · 2025-07-28 14:45:49 +00:00

7ecd3153a8

fix: build with codegen-units = 1 for profile.release (#1421 )

Great suggestion from @zamazan4ik on
https://github.com/openai/codex/issues/1411.

Michael Bolin · 2025-06-28 15:24:48 -07:00

1b7c8d2569

feat: standalone file search CLI (#1386 )

Standalone fuzzy filename search library that should be helpful in
addressing https://github.com/openai/codex/issues/1261.

Michael Bolin · 2025-06-25 13:29:03 -07:00

296996d74e

feat: add support for login with ChatGPT (#1212 )

This does not implement the full Login with ChatGPT experience, but it
should unblock people.

**What works**

* The `codex` multitool now has a `login` subcommand, so you can run
`codex login`, which should write `CODEX_HOME/auth.json` if you complete
the flow successfully. The TUI will now read the `OPENAI_API_KEY` from
`auth.json`.
* The TUI should refresh the token if it has expired and the necessary
information is in `auth.json`.
* There is a `LoginScreen` in the TUI that tells you to run `codex
login` if both (1) your model provider expects to use `OPENAI_API_KEY`
as its env var, and (2) `OPENAI_API_KEY` is not set.

**What does not work**

* The `LoginScreen` does not support the login flow from within the TUI.
Instead, it tells you to quit, run `codex login`, and then run `codex`
again.
* `codex exec` does read from `auth.json` yet, nor does it direct the
user to go through the login flow if `OPENAI_API_KEY` is not be found.
* The `maybeRedeemCredits()` function from `get-api-key.tsx` has not
been ported from TypeScript to `login_with_chatgpt.py` yet:


https://github.com/openai/codex/blob/a67a67f3258fc21e147b6786a143fe3e15e6d5ba/codex-cli/src/utils/get-api-key.tsx#L84-L89

**Implementation**

Currently, the OAuth flow requires running a local webserver on
`127.0.0.1:1455`. It seemed wasteful to incur the additional binary cost
of a webserver dependency in the Rust CLI just to support login, so
instead we implement this logic in Python, as Python has a `http.server`
module as part of its standard library. Specifically, we bundle the
contents of a single Python file as a string in the Rust CLI and then
use it to spawn a subprocess as `python3 -c
{{SOURCE_FOR_PYTHON_SERVER}}`.

As such, the most significant files in this PR are:

```
codex-rs/login/src/login_with_chatgpt.py
codex-rs/login/src/lib.rs
```

Now that the CLI may load `OPENAI_API_KEY` from the environment _or_
`CODEX_HOME/auth.json`, we need a new abstraction for reading/writing
this variable, so we introduce:

```
codex-rs/core/src/openai_api_key.rs
```

Note that `std::env::set_var()` is [rightfully] `unsafe` in Rust 2024,
so we use a LazyLock<RwLock<Option<String>>> to store `OPENAI_API_KEY`
so it is read in a thread-safe manner.

Ultimately, it should be possible to go through the entire login flow
from the TUI. This PR introduces a placeholder `LoginScreen` UI for that
right now, though the new `codex login` subcommand introduced in this PR
should be a viable workaround until the UI is ready.

**Testing**

Because the login flow is currently implemented in a standalone Python
file, you can test it without building any Rust code as follows:

```
rm -rf /tmp/codex_home && mkdir /tmp/codex_home
CODEX_HOME=/tmp/codex_home python3 codex-rs/login/src/login_with_chatgpt.py
```

For reference:

* the original TypeScript implementation was introduced in
https://github.com/openai/codex/pull/963
* support for redeeming credits was later added in
https://github.com/openai/codex/pull/974

Michael Bolin · 2025-06-04 08:44:17 -07:00

515b6331bd

fix: overhaul how we spawn commands under seccomp/landlock on Linux (#1086 )

Historically, we spawned the Seatbelt and Landlock sandboxes in
substantially different ways:

For **Seatbelt**, we would run `/usr/bin/sandbox-exec` with our policy
specified as an arg followed by the original command:


https://github.com/openai/codex/blob/d1de7bb383552e8fadd94be79d65d188e00fd562/codex-rs/core/src/exec.rs#L147-L219

For **Landlock/Seccomp**, we would do
`tokio::runtime::Builder::new_current_thread()`, _invoke
Landlock/Seccomp APIs to modify the permissions of that new thread_, and
then spawn the command:


https://github.com/openai/codex/blob/d1de7bb383552e8fadd94be79d65d188e00fd562/codex-rs/core/src/exec_linux.rs#L28-L49

While it is neat that Landlock/Seccomp supports applying a policy to
only one thread without having to apply it to the entire process, it
requires us to maintain two different codepaths and is a bit harder to
reason about. The tipping point was
https://github.com/openai/codex/pull/1061, in which we had to start
building up the `env` in an unexpected way for the existing
Landlock/Seccomp approach to continue to work.

This PR overhauls things so that we do similar things for Mac and Linux.
It turned out that we were already building our own "helper binary"
comparable to Mac's `sandbox-exec` as part of the `cli` crate:


https://github.com/openai/codex/blob/d1de7bb383552e8fadd94be79d65d188e00fd562/codex-rs/cli/Cargo.toml#L10-L12

We originally created this to build a small binary to include with the
Node.js version of the Codex CLI to provide support for Linux
sandboxing.

Though the sticky bit is that, at this point, we still want to deploy
the Rust version of Codex as a single, standalone binary rather than a
CLI and a supporting sandboxing binary. To satisfy this goal, we use
"the arg0 trick," in which we:

* use `std::env::current_exe()` to get the path to the CLI that is
currently running
* use the CLI as the `program` for the `Command`
* set `"codex-linux-sandbox"` as arg0 for the `Command`

A CLI that supports sandboxing should check arg0 at the start of the
program. If it is `"codex-linux-sandbox"`, it must invoke
`codex_linux_sandbox::run_main()`, which runs the CLI as if it were
`codex-linux-sandbox`. When acting as `codex-linux-sandbox`, we make the
appropriate Landlock/Seccomp API calls and then use `execvp(3)` to spawn
the original command, so do _replace_ the process rather than spawn a
subprocess. Incidentally, we do this before starting the Tokio runtime,
so the process should only have one thread when `execvp(3)` is called.

Because the `core` crate that needs to spawn the Linux sandboxing is not
a CLI in its own right, this means that every CLI that includes `core`
and relies on this behavior has to (1) implement it and (2) provide the
path to the sandboxing executable. While the path is almost always
`std::env::current_exe()`, we needed to make this configurable for
integration tests, so `Config` now has a `codex_linux_sandbox_exe:
Option<PathBuf>` property to facilitate threading this through,
introduced in https://github.com/openai/codex/pull/1089.

This common pattern is now captured in
`codex_linux_sandbox::run_with_sandbox()` and all of the `main.rs`
functions that should use it have been updated as part of this PR.

The `codex-linux-sandbox` crate added to the Cargo workspace as part of
this PR now has the bulk of the Landlock/Seccomp logic, which makes
`core` a bit simpler. Indeed, `core/src/exec_linux.rs` and
`core/src/landlock.rs` were removed/ported as part of this PR. I also
moved the unit tests for this code into an integration test,
`linux-sandbox/tests/landlock.rs`, in which I use
`env!("CARGO_BIN_EXE_codex-linux-sandbox")` as the value for
`codex_linux_sandbox_exe` since `std::env::current_exe()` is not
appropriate in that case.

Michael Bolin · 2025-05-23 11:37:07 -07:00

89ef4efdcf

Disallow expect via lints (#865 )

Adds `expect()` as a denied lint. Same deal applies with `unwrap()`
where we now need to put `#[expect(...` on ones that we legit want. Took
care to enable `expect()` in test contexts.

# Tests

```
cargo fmt
cargo clippy --all-features --all-targets --no-deps -- -D warnings
cargo test
```

jcoens-openai · 2025-05-12 08:45:46 -07:00

f3bd143867

Workspace lints and disallow unwrap (#855 )

Sets submodules to use workspace lints. Added denying unwrap as a
workspace level lint, which found a couple of cases where we could have
propagated errors. Also manually labeled ones that were fine by my eye.

jcoens-openai · 2025-05-08 09:46:18 -07:00

87cf120873

Update cargo to 2024 edition (#842 )

Some effects of this change:
- New formatting changes across many files. No functionality changes
should occur from that.
- Calls to `set_env` are considered unsafe, since this only happens in
tests we wrap them in `unsafe` blocks

jcoens-openai · 2025-05-07 08:37:48 -07:00

8a89d3aeda

chore: introduce codex-common crate (#843 )

I started this PR because I wanted to share the `format_duration()`
utility function in `codex-rs/exec/src/event_processor.rs` with the TUI.
The question was: where to put it?

`core` should have as few dependencies as possible, so moving it there
would introduce a dependency on `chrono`, which seemed undesirable.
`core` already had this `cli` feature to deal with a similar situation
around sharing common utility functions, so I decided to:

* make `core` feature-free
* introduce `common`
* `common` can have as many "special interest" features as it needs,
each of which can declare their own deps
* the first two features of common are `cli` and `elapsed`

In practice, this meant updating a number of `Cargo.toml` files,
replacing this line:

```toml
codex-core = { path = "../core", features = ["cli"] }
```

with these:

```toml
codex-core = { path = "../core" }
codex-common = { path = "../common", features = ["cli"] }
```

Moving `format_duration()` into its own file gave it some "breathing
room" to add a unit test, so I had Codex generate some tests and new
support for durations over 1 minute.

Michael Bolin · 2025-05-06 17:38:56 -07:00

c577e94b67

feat: initial McpClient for Rust (#822 )

This PR introduces an initial `McpClient` that we will use to give Codex
itself programmatic access to foreign MCPs. This does not wire it up in
Codex itself yet, but the new `mcp-client` crate includes a `main.rs`
for basic testing for now.

Manually tested by sending a `tools/list` request to Codex's own MCP
server:

```
codex-rs$ cargo build
codex-rs$ cargo run --bin codex-mcp-client ./target/debug/codex-mcp-server
{
  "tools": [
    {
      "description": "Run a Codex session. Accepts configuration parameters matching the Codex Config struct.",
      "inputSchema": {
        "properties": {
          "approval-policy": {
            "description": "Execution approval policy expressed as the kebab-case variant name (`unless-allow-listed`, `auto-edit`, `on-failure`, `never`).",
            "enum": [
              "auto-edit",
              "unless-allow-listed",
              "on-failure",
              "never"
            ],
            "type": "string"
          },
          "cwd": {
            "description": "Working directory for the session. If relative, it is resolved against the server process's current working directory.",
            "type": "string"
          },
          "disable-response-storage": {
            "description": "Disable server-side response storage.",
            "type": "boolean"
          },
          "model": {
            "description": "Optional override for the model name (e.g. \"o3\", \"o4-mini\")",
            "type": "string"
          },
          "prompt": {
            "description": "The *initial user prompt* to start the Codex conversation.",
            "type": "string"
          },
          "sandbox-permissions": {
            "description": "Sandbox permissions using the same string values accepted by the CLI (e.g. \"disk-write-cwd\", \"network-full-access\").",
            "items": {
              "enum": [
                "disk-full-read-access",
                "disk-write-cwd",
                "disk-write-platform-user-temp-folder",
                "disk-write-platform-global-temp-folder",
                "disk-full-write-access",
                "network-full-access"
              ],
              "type": "string"
            },
            "type": "array"
          }
        },
        "required": [
          "prompt"
        ],
        "type": "object"
      },
      "name": "codex"
    }
  ]
}
```

Michael Bolin · 2025-05-05 12:52:55 -07:00

2cf7aeeeb6

feat: introduce mcp-server crate (#792 )

This introduces the `mcp-server` crate, which contains a barebones MCP
server that provides an `echo` tool that echoes the user's request back
to them.

To test it out, I launched
[modelcontextprotocol/inspector](https://github.com/modelcontextprotocol/inspector)
like so:

```
mcp-server$ npx @modelcontextprotocol/inspector cargo run --
```

and opened up `http://127.0.0.1:6274` in my browser:


![image](https://github.com/user-attachments/assets/83fc55d4-25c2-4497-80cd-e9702283ff93)

I also had to make a small fix to `mcp-types`, adding
`#[serde(untagged)]` to a number of `enum`s.

Michael Bolin · 2025-05-02 17:25:58 -07:00

21cd953dbd

feat: introduce mcp-types crate (#787 )

This adds our own `mcp-types` crate to our Cargo workspace. We vendor in
the
[`2025-03-26/schema.json`](https://github.com/modelcontextprotocol/modelcontextprotocol/blob/05f204513641c05bd78d056791af99c6c84520fa/schema/2025-03-26/schema.json)
from the MCP repo and introduce a `generate_mcp_types.py` script to
codegen the `lib.rs` from the JSON schema.

Test coverage is currently light, but I plan to refine things as we
start making use of this crate.

And yes, I am aware that
https://github.com/modelcontextprotocol/rust-sdk exists, though the
published https://crates.io/crates/rmcp appears to be a competing
effort. While things are up in the air, it seems better for us to
control our own version of this code.

Incidentally, Codex did a lot of the work for this PR. I told it to
never edit `lib.rs` directly and instead to update
`generate_mcp_types.py` and then re-run it to update `lib.rs`. It
followed these instructions and once things were working end-to-end, I
iteratively asked for changes to the tests until the API looked
reasonable (and the code worked). Codex was responsible for figuring out
what to do to `generate_mcp_types.py` to achieve the requested test/API
changes.

Michael Bolin · 2025-05-02 13:33:14 -07:00

83961e0299

chore: script to create a Rust release (#759 )

For now, keep things simple such that we never update the `version` in
the `Cargo.toml` for the workspace root on the `main` branch. Instead,
create a new branch for a release, push one commit that updates the
`version`, and then tag that branch to kick off a release.

To test, I ran this script and created this release job:

https://github.com/openai/codex/actions/runs/14762580641

Michael Bolin · 2025-04-30 12:39:03 -07:00

b571249867

chore: Rust release, set prerelease:false and version=0.0.2504301132 (#755 )

The generated DotSlash file has URLs that refer to
`https://github.com/openai/codex/releases/`, so let's set
`prerelease:false` (but keep `draft:true` for now) so those URLs should
work.

Also updated `version` in Cargo workspace so I will kick off a build
once this lands.

Michael Bolin · 2025-04-30 11:53:03 -07:00

8f7a54501c

chore: remove the REPL crate/subcommand (#754 )

@oai-ragona and I discussed it, and we feel the REPL crate has served
its purpose, so we're going to delete the code and future archaeologists
can find it in Git history.

Michael Bolin · 2025-04-30 10:15:50 -07:00

c432d9ef81

59 Commits