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## Summary - route each configured MCP server through an explicit per-server `environment_id` instead of a manager-wide remote toggle - default omitted `environment_id` to `local`, resolve named ids through `EnvironmentManager`, and fail only the affected MCP server when an explicit id is unknown - keep local stdio on the existing local launcher path for now, while named-environment stdio uses the selected environment backend and requires an absolute `cwd` - allow local HTTP MCP servers to keep using the ambient HTTP client when no local `Environment` is configured; named-environment HTTP MCPs use that environment's HTTP client ## Validation - devbox Bazel build: `bazel build --bes_backend= --bes_results_url= //codex-rs/cli:codex //codex-rs/rmcp-client:test_stdio_server //codex-rs/rmcp-client:test_streamable_http_server` - devbox app-server config matrix with real `config.toml` / `environments.toml` files covering omitted local, explicit local, omitted local under remote default, explicit remote stdio, local HTTP without local env, explicit remote HTTP, local stdio without local env, unknown explicit env, and remote stdio without `cwd`
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.