## Why App-server request handling had a lot of repeated JSON-RPC error construction and one-off `send_error`/`return` branches. This made small handlers noisy and pushed error response details into leaf code that otherwise only needed to validate input or call the underlying API. ## What Changed - Added shared JSON-RPC error constructors in `codex-rs/app-server/src/error_code.rs`. - Lifted straightforward request result emission into `codex-rs/app-server/src/message_processor.rs` so response/error dispatch happens at the request boundary. - Reused the result helpers across command exec, config, filesystem, device-key, external-agent config, fs-watch, and outgoing-message paths. - Removed leaf wrapper handlers where the method body was only forwarding to a response helper. - Returned request validation errors upward in the simple cases instead of sending an error locally and immediately returning. ## Verification - `cargo test -p codex-app-server --lib command_exec::tests` - `cargo test -p codex-app-server --lib outgoing_message::tests` - `cargo test -p codex-app-server --lib in_process::tests` - `cargo test -p codex-app-server --test all v2::fs` - `cargo test -p codex-app-server --test all v2::config_rpc` - `cargo test -p codex-app-server --test all v2::external_agent_config` - `cargo test -p codex-app-server --test all v2::initialize` - `just fix -p codex-app-server` - `git diff --check` Note: full `cargo test -p codex-app-server` was attempted and stopped in `message_processor::tracing_tests::turn_start_jsonrpc_span_parents_core_turn_spans` with a stack overflow after unrelated tests had already passed.
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.
