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 are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
This fork wires Codex CLI to the Kontext-Dev MCP server using the kontext-dev
Rust SDK. It uses a single MCP server and refreshes SEARCH/EXECUTE tools before
each user turn. The diff stays minimal so upstream updates are easy to rebase.
Create agents at https://app.kontext.dev/ to get client credentials and
visibility into your agents (like this Codex client). Then copy the credentials
into ~/.codex/config.toml:
[kontext-dev]
mcp_url = "http://localhost:4000/mcp"
token_url = "http://127.0.0.1:4444/oauth2/token"
client_id = "<client_id>"
client_secret = "<client_secret>"
scope = "mcp:invoke"
server_name = "kontext-dev"Do not commit secrets.
cd codex-rs
cargo run --bin codexDefault branch: kontext-dev. main mirrors openai/codex, and kontext-dev
is rebased onto main to stay current.
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex# Install using Homebrew
brew install --cask codexThen 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.
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Team, 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.
This repository is licensed under the Apache-2.0 License.