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## Why This is the first mechanical slice of moving tool spec ownership toward the handlers. `codex-tools` should keep shared primitives and conversion helpers, while builtin tool specs and registration planning live in `codex-core` with the handlers that own those tools. Keeping this PR to relocation and import updates isolates the copy/move review from the later logic change that wires specs through registered handlers. ## What changed - Moved builtin tool spec constructors from `codex-rs/tools/src` into `codex-rs/core/src/tools/handlers/*_spec.rs` or nearby core tool modules. - Moved the registry planning code into `codex-rs/core/src/tools/spec_plan.rs` and its associated types/tests into core. - Kept shared primitives in `codex-tools`, including `ToolSpec`, schema/types, discovery/config primitives, dynamic/MCP conversion helpers, and code-mode collection helpers. - Updated handlers that referenced moved argument types or tool-name constants to use the core spec modules. - Moved spec tests next to the moved spec modules. ## Verification - `cargo check -p codex-tools` - `cargo check -p codex-core` - `cargo test -p codex-tools` - `cargo test -p codex-core _spec::tests` - `cargo test -p codex-core tools::spec_plan::tests` - `just fix -p codex-tools` - `just fix -p codex-core` Note: I also tried the broader `cargo test -p codex-core tools::`; it reached the moved spec-plan/spec tests successfully, then aborted with a stack overflow in `tools::handlers::multi_agents::tests::tool_handlers_cascade_close_and_resume_and_keep_explicitly_closed_subtrees_closed`, which is outside this spec relocation.
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.