## Why The `non_prefixed_mcp_tool_names` feature should be applied where MCP tools become model-visible, not by remapping names later in core. Keeping the decision in `McpConnectionManager` construction makes `ToolInfo` the single shaped view that spec building, deferred tool search, routing, and unavailable-tool placeholders can consume directly. This also preserves the existing external behavior while the feature is off, and keeps the feature-on behavior for code mode and hooks explicit at the manager boundary. ## What Changed - Add `McpToolNameMode` to `codex-mcp` and flow it through `McpConfig` into `McpConnectionManager::new`. - Normalize MCP `ToolInfo` names in the manager using either legacy-prefixed namespaces or non-prefixed namespaces; the legacy path adds `mcp__` without restoring the old trailing namespace suffix. - Remove the core-side MCP name remapping path so specs, tool search, session resolution, and unavailable-tool placeholder construction use the manager-provided `ToolName` values directly. - Keep code mode flattening on the `__` namespace separator. - Preserve hook compatibility by giving non-prefixed MCP hook names legacy `mcp__...` matcher aliases. - Add/adjust integration and unit coverage for non-prefixed code-mode behavior, hook matching with the feature on and off, and manager-level legacy prefixing. ## Testing - `cargo test -p codex-mcp --lib` - `cargo test -p codex-core --lib tools::spec::tests -- --nocapture` - `cargo test -p codex-core --lib mcp_tools -- --nocapture` - `cargo test -p codex-core --lib mcp_tool_exposure -- --nocapture` - `cargo test -p codex-core --test all mcp_tool -- --nocapture` - `cargo test -p codex-core --test all search_tool -- --nocapture` - `cargo test -p codex-core --test all hooks_mcp -- --nocapture` - `cargo test -p codex-core --test all code_mode_uses_non_prefixed_mcp_tool_names_when_feature_enabled -- --nocapture` - `cargo test -p codex-tools` - `cargo test -p codex-features`
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.
