## Why `item/fileChange/outputDelta` text output was only the tool's summary or error text and not used by client surfaces. We keep `item/fileChange/outputDelta` in the app-server protocol as a deprecated compatibility entry, but the server no longer emits it. ## What changed - stop the `apply_patch` runtime from emitting `ExecCommandOutputDelta` events - simplify `item_event_to_server_notification` so command output deltas always map to `item/commandExecution/outputDelta` - remove the app-server bookkeeping that tried to detect whether an output delta belonged to a file change - mark `item/fileChange/outputDelta` as a deprecated legacy protocol entry in the v2 types, schema, and README - simplify the file-change approval tests so they only wait for completion instead of expecting output-delta notifications ## Testing - `cargo test -p codex-app-server-protocol` - `cargo test -p codex-thread-manager-sample` - `cargo test -p codex-app-server-protocol protocol::event_mapping::tests::exec_command_output_delta_maps_to_command_execution_output_delta -- --exact` - `cargo test -p codex-app-server turn_start_file_change_approval_accept_for_session_persists_v2 -- --exact` *(failed before the test assertions because the wiremock `/responses` mock received 0 requests in setup)*
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.
