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## Why - Similar change as https://github.com/openai/codex/pull/21219 - Without change: MCP tool calls receive `_meta["x-codex-turn-metadata"]` with various key values. - Issue: MCP servers currently do not know if user input was requested during the turn (Ex: Model decides to prompt the user for approval mid-turn before making a possibly risky tool call). MCP servers may want to know this when tracking latency metrics because these instances are inflated. ## What Changed - With change: MCP turn metadata now includes `user_input_requested_during_turn` when a model-visible `request_user_input` call happened earlier in the turn, propagated in `_meta["x-codex-turn-metadata"]`. - `mark_turn_user_input_requested()` is called when user input is requested through either MCP elicitation (`mcp.rs`) or the `request_user_input` tool (`mod.rs`). - MCP tool call `_meta` is now built immediately before execution (`mcp_tool_call.rs`) so user input requested earlier in the same turn, including within the same tool call via elicitation, is reflected in the metadata. - Normal `/responses` turn metadata headers are unchanged. ## Verification - `codex-rs/core/src/session/mcp_tests.rs` - `codex-rs/core/src/tools/handlers/request_user_input_tests.rs` - `codex-rs/core/src/turn_metadata_tests.rs` - `codex-rs/core/tests/suite/search_tool.rs`
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.