Set up Codex

Install the Charming plugin once, then build in the Codex app or CLI.

Install the plugin

Add the Tambo Labs marketplace:

codex plugin marketplace add https://github.com/tambo-labs/charming-codex-plugin.git

The plugin adds the Charming tools and the instructions Codex needs to build apps.

Finish setup

1. Restart Codex after the command finishes.
2. Open Plugins. In the Codex CLI, enter /plugins.
3. Choose Tambo Labs, then install Charming.
4. Start a new thread.
5. Ask Codex to build an app. Approve access when the browser opens.

The Codex app renders the finished app in the conversation. Codex CLI opens its Charming URL in the browser.

Start building

Ask for the app you need in plain words. For example:

Build a shared project tracker with owners, due dates, and status filters.

Add the MCP server without the plugin

If plugin installation is unavailable, add Charming as a remote MCP server.

1. Open ~/.codex/config.toml. Create the file if it does not exist.

2. Add this block:

   [mcp_servers.charming]
   url = "https://charm.ing/mcp"

3. Save the file and restart Codex.

4. Start a new thread and ask Codex to build an app.

5. Follow the browser sign-in prompt when Codex first calls a Charming tool.

Troubleshooting

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