marimo-serve

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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

dakesan By dakesan schedule Updated 1/6/2026
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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

Marimo Development Server

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

Server Command

To start the server in background:

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
Install via CLI
npx skills add https://github.com/dakesan/marimo-cc --skill marimo-serve
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