Agent skill

marimo-serve

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

View SKILL.md on GitHub Repository
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Install this agent skill to your Project

npx add-skill https://github.com/dakesan/marimo-cc/tree/main/skills/marimo-serve

SKILL.md

Marimo Development Server

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

Server Command

To start the server in background:

bash
uv 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

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