## Why `selectedCapabilityRoots` belongs to one thread, but MCP contributors previously received only the global Codex config. That left no clean way for a selected executor capability to contribute MCP servers to its own thread. ## What this PR does - Gives MCP contributors a small context containing the config and, for a running thread, its frozen host-seeded inputs. - Uses the same thread inputs during startup, status queries, refreshes, and skill dependency checks. - Keeps threadless MCP operations and the existing hosted Apps behavior unchanged. - Adds coverage showing that two threads resolve independent registrations and that later lifecycle mutations do not change the frozen MCP inputs. This PR does not discover plugin manifests, add MCP servers, or launch anything new. It only establishes the thread-scoped registration boundary. ## Follow-ups - Resolve selected executor plugin roots through their owning environment filesystem. - Convert their stdio MCP declarations into environment-bound registrations and add an executor MCP end-to-end test. ## Verification - `just fmt` - `cargo check --tests -p codex-protocol -p codex-extension-api -p codex-mcp-extension -p codex-core -p codex-app-server` Tests and Clippy were not run.
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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.
