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name: marimo-serve description: | This skill should be used when starting a marimo development server with hot reload.

Triggers include:

• Starting marimo server
• Running marimo notebooks locally
• Launching marimo development environment
• Setting up hot reload for notebooks

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Marimo Development Server

Start a marimo development server with hot reload for interactive notebook development.

Server Command

To start the server in background:

Copyuv run marimo run --watch {filename} --port 2818

Use the Bash tool with run_in_background: true parameter to keep the server running.

Configuration

• Default port: 2818
• Access URL: http://localhost:2818
• Hot reload: Enabled with --watch flag

Verification

After starting the server:

1. Check running tasks with /tasks command
2. Verify server is accessible via WebFetch to http://localhost:2818
3. Use lsof -i :2818 to confirm port is in use

Workflow

1. Ensure the target notebook file exists
2. Start server with run_in_background: true
3. Edit notebook files with the Edit tool
4. Server automatically reloads on file changes
5. Fetch results via WebFetch when needed