Files
codex/sdk/python/README.md
Ahmed Ibrahim 1a4096e273 Add untrusted external messages to the Python SDK (#44086)
## Why

Applications need to deliver content from other agents, tools, or services with tool-level authority, without treating it as user input or granting authorization.

## What changed

- Export `ExternalMessage` for sync and async `run(...)` and `turn(...)`, accepting text or structured content with a tool name and optional namespace. Send it through `toolOutput` and require CLI 0.151.0 or newer.
- Support starting a turn or joining an active regular turn while preserving external content as function output in history. Keep external messages separate from user-input lists and `steer(...)`.
- Give turn handles independent subscriptions, replaying completed items and latest usage to joining handles. Release consumed transient events and clean up subscriptions on closure, failure, or cancellation.
- Document the authority boundary and add sync and async examples.

## Testing

Add coverage for wire representations, input validation, runtime compatibility, tool authority across resume, active-turn joins, and tool-output truncation. Add subscription tests for replay, concurrent consumers, early completion, cancellation, and cleanup.

GitOrigin-RevId: 6106327085fd9c4bd11b71e20b3d8e74738b8bb5
2026-09-09 06:54:18 +00:00

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Markdown

# OpenAI Codex Python SDK
Build Python applications that start Codex threads, run turns, stream progress,
and control workspace access.
## Install
Install the SDK:
```bash
pip install openai-codex
```
## Quickstart
The SDK reuses your existing Codex authentication when one is already
available:
```python
from openai_codex import Codex
with Codex() as codex:
thread = codex.thread_start()
result = thread.run("Explain this repository in three bullets.")
print(result.final_response)
```
`thread.run(...)` returns a `TurnResult` containing the final response,
collected items, and token usage.
## Authentication
Existing Codex authentication is reused automatically. To start ChatGPT
browser login explicitly:
```python
from openai_codex import Codex
with Codex() as codex:
login = codex.login_chatgpt()
print(login.auth_url)
print(login.wait().success)
```
For device-code login:
```python
with Codex() as codex:
login = codex.login_chatgpt_device_code()
print(login.verification_url, login.user_code)
login.wait()
```
For API-key login:
```python
with Codex() as codex:
codex.login_api_key("sk-...")
```
## Built-In Help
Use Python's standard `help(openai_codex)`, `help(Codex)`, or
`python -m pydoc openai_codex` documentation tools.
## Documentation
- [Getting started](https://github.com/openai/codex/blob/main/sdk/python/docs/getting-started.md)
- [API reference](https://github.com/openai/codex/blob/main/sdk/python/docs/api-reference.md)
- [Untrusted external messages](https://github.com/openai/codex/blob/main/sdk/python/docs/api-reference.md#externalmessage)
- [FAQ](https://github.com/openai/codex/blob/main/sdk/python/docs/faq.md)
- [Examples](https://github.com/openai/codex/blob/main/sdk/python/examples/README.md)
The package is licensed under the
[repository Apache License 2.0](https://github.com/openai/codex/blob/main/LICENSE).