## Why MCP tool-call events need to expose trusted app identity and action metadata directly so v2 clients do not have to infer it from tool names or resource URIs. ## What changed - Add optional `appName`, `templateId`, and `actionName` fields to MCP tool-call `appContext`. - Populate `appName` and `templateId` from trusted Codex Apps metadata, and derive `actionName` from the trusted app resource metadata. - Preserve all three fields through core events, legacy protocol events, persisted thread history, resume redaction, and app-server v2 responses. - Document the public `appContext` fields in `codex-rs/app-server/README.md`. - Regenerate app-server JSON and TypeScript schemas and add coverage for serialization, persistence, redaction, and metadata propagation. ## Validation - `just test -p codex-app-server-protocol mcp_tool_call` - `just test -p codex-core mcp_tool_call_item_metadata_only_trusts_codex_apps_identity mcp_tool_call_item_includes_app_identity` - `just write-app-server-schema` --------- Co-authored-by: Martin Au-Yeung <280153141+martinauyeung-oai@users.noreply.github.com>
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.
