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## 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
172 lines
4.2 KiB
Markdown
172 lines
4.2 KiB
Markdown
# Getting Started
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This guide gets a published OpenAI Codex Python SDK installation running
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with a multi-turn thread.
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## 1. Install
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Install the SDK:
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```bash
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pip install openai-codex
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```
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Requirements:
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- Python `>=3.10`
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- An existing Codex account session, or one of the login flows below
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The SDK installs its matching `openai-codex-cli-bin` runtime dependency
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automatically. Stable SDK releases track the corresponding stable Codex CLI release.
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## 2. Authenticate When Needed
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Existing Codex authentication is reused automatically. For ChatGPT browser
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login:
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```python
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from openai_codex import Codex
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with Codex() as codex:
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login = codex.login_chatgpt()
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print(login.auth_url)
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print(login.wait().success)
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```
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For device-code login:
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```python
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with Codex() as codex:
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login = codex.login_chatgpt_device_code()
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print(login.verification_url, login.user_code)
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print(login.wait().success)
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```
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For API-key login:
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```python
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with Codex() as codex:
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codex.login_api_key("sk-...")
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print(codex.account().account)
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```
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## 3. Run A Turn
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```python
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from openai_codex import Codex, Sandbox
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with Codex() as codex:
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thread = codex.thread_start(sandbox=Sandbox.workspace_write)
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result = thread.run("Say hello in one sentence.")
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print("Thread:", thread.id)
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print("Text:", result.final_response)
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print("Items:", len(result.items))
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```
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`Thread.run(...)` starts a turn, waits for completion, and returns
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`TurnResult`. Plain strings are shorthand for `TextInput(...)`.
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Use `Thread.turn(...)` when you need a `TurnHandle` for streaming, steering,
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or interrupting an active turn.
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For **untrusted content** from another agent, tool, or application, pass an
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[`ExternalMessage`](api-reference.md#externalmessage). It retains tool-level
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authority and does not establish user authorization or approval. Plain strings
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and `TextInput` represent user input.
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## 4. Choose Sandbox Access
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Use one enum for the initial thread and later turn overrides:
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```python
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from openai_codex import Codex, Sandbox
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with Codex() as codex:
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thread = codex.thread_start(sandbox=Sandbox.workspace_write)
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thread.run("Make the requested changes.")
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review = thread.run("Review the diff only.", sandbox=Sandbox.read_only)
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```
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Available presets:
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- `Sandbox.read_only`: read files without allowing writes.
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- `Sandbox.workspace_write`: read files and write inside the workspace and
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configured writable roots; this is the normal default for workspace work.
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- `Sandbox.full_access`: run without filesystem access restrictions.
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When `sandbox=` is omitted, Codex uses its configured default. A turn override
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also applies to subsequent turns on that thread.
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## 5. Continue A Thread
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```python
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from openai_codex import Codex
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with Codex() as codex:
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thread = codex.thread_start()
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thread.run("Summarize Rust ownership in two bullets.")
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result = thread.run("Now explain it to a Python developer.")
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print(result.final_response)
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```
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To resume a stored thread later:
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```python
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with Codex() as codex:
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thread = codex.thread_resume("thr_123")
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print(thread.run("Continue where we left off.").final_response)
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```
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## 6. Use The Async Client
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```python
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import asyncio
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from openai_codex import AsyncCodex, Sandbox
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async def main() -> None:
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async with AsyncCodex() as codex:
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thread = await codex.thread_start(sandbox=Sandbox.workspace_write)
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result = await thread.run("Continue where we left off.")
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print(result.final_response)
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asyncio.run(main())
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```
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## 7. Get Help
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Python's built-in documentation tools cover the curated SDK surface:
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```python
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import openai_codex
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from openai_codex import Codex, CodexConfig
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help(openai_codex)
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help(Codex)
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help(CodexConfig)
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```
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```bash
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python -m pydoc openai_codex
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```
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## Developing From This Repository
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Contributors working from a checkout can install development dependencies from
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the repository:
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```bash
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cd sdk/python
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uv sync --group dev
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source .venv/bin/activate
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```
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## Next Stops
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- [API reference](https://github.com/openai/codex/blob/main/sdk/python/docs/api-reference.md)
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- [FAQ](https://github.com/openai/codex/blob/main/sdk/python/docs/faq.md)
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- [Runnable examples](https://github.com/openai/codex/blob/main/sdk/python/examples/README.md)
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