## Why The SDK had behavioral tests that replaced SDK client internals. Those tests could catch wrapper mistakes, but they did not prove the pinned app-server runtime, generated notification models, request routing, and sync/async public clients worked together. This PR adds deterministic integration coverage that starts the pinned `codex app-server` process and mocks only the upstream Responses HTTP boundary. ## What - Add `AppServerHarness` and `MockResponsesServer` helpers for isolated `CODEX_HOME`, mock-provider config, queued SSE responses, and captured `/v1/responses` requests. - Add shared helpers for SSE construction, stream assertions, approval-policy inspection, and image fixtures. - Split integration coverage into focused modules for run behavior, inputs, streaming, turn controls, approvals, and thread lifecycle. - Cover sync and async `Thread.run`, `TurnHandle.stream`, interleaved streams, approval-mode persistence, lifecycle helpers, final-answer phase handling, image inputs, loaded skill input injection, steering, interruption, listing, history reads, run overrides, and token usage mapping. - Replace public-wrapper tests that duplicated integration-test behavior with lower-level client tests only where direct client behavior is the thing under test. ## Stack 1. #21891 `[1/8]` Pin Python SDK runtime dependency 2. #21893 `[2/8]` Generate Python SDK types from pinned runtime 3. #21895 `[3/8]` Run Python SDK tests in CI 4. #21896 `[4/8]` Define Python SDK public API surface 5. #21905 `[5/8]` Rename Python SDK package to `openai-codex` 6. #21910 `[6/8]` Add high-level Python SDK approval mode 7. This PR `[7/8]` Add Python SDK app-server integration harness 8. #22021 `[8/8]` Add Python SDK Ruff formatting ## Verification - Added pinned app-server integration tests under `sdk/python/tests/test_app_server_*.py` and `test_real_app_server_integration.py`. --------- Co-authored-by: Codex <noreply@openai.com>
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
