## Why `core/src/tools/spec.rs` still owned the pure `tool_search` and `tool_suggest` spec builders even though that logic no longer needed `codex-core` runtime state. This change continues the `codex-tools` migration by moving the reusable discovery and suggestion spec construction out of `codex-core` so `spec.rs` is left with the core-owned policy decisions about when these tools are exposed and what metadata is available. ## What changed - Added `codex-rs/tools/src/tool_discovery.rs` with the shared `tool_search` and `tool_suggest` spec builders, plus focused unit tests in `tool_discovery_tests.rs`. - Moved the shared `DiscoverableToolAction` and `DiscoverableToolType` declarations into `codex-tools` so the `tool_suggest` handler and the extracted spec builders use the same wire-model enums. - Updated `core/src/tools/spec.rs` to translate `ToolInfo` and `DiscoverableTool` values into neutral `codex-tools` inputs and delegate the actual spec building there. - Removed the old template-based description rendering helpers from `core/src/tools/spec.rs` and deleted the now-dead helper methods in `core/src/tools/discoverable.rs`. - Updated `codex-rs/tools/README.md` to document that discovery and suggestion models/spec builders now live in `codex-tools`. ## Test plan - `cargo test -p codex-tools` - `CARGO_TARGET_DIR=/tmp/codex-core-discovery-specs cargo test -p codex-core --lib tools::spec::` - `CARGO_TARGET_DIR=/tmp/codex-core-discovery-specs cargo test -p codex-core --lib tools::handlers::tool_suggest::` - `just argument-comment-lint` ## References - #16154 - #15923 - #15928 - #15944 - #15953 - #16031 - #16047 - #16129 - #16132 - #16138 - #16141
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, 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.
Docs
This repository is licensed under the Apache-2.0 License.
