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storybook-mcp

by mcpland
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MIT License
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Storybook MCP Server

Node CI npm license

A Model Context Protocol (MCP) server that provides tools to interact with Storybook documentation and component information.

Features

  • getComponentList: Get a list of all components from a configured Storybook

  • getComponentsProps: Get detailed props information for multiple components using headless browser automation

  • Custom Tools: Create custom tools that can extract any information from your Storybook pages using JavaScript

Installation and Configuration

MCP Settings

Add the following configuration to MCP settings:

{ "mcpServers": { "storybook": { "command": "npx", "args": ["-y", "storybook-mcp"], "env": { "STORYBOOK_URL": "<your_storybook_url>/index.json" } } } }

Environment Variables

  • STORYBOOK_URL (required): The URL to your Storybook's index.json file

  • CUSTOM_TOOLS (optional): JSON array of custom tool definitions for extracting specific information from your Storybook

Usage

The server provides built-in tools and supports custom tools:

Built-in Tools

1. getComponentList

Retrieves a list of all available components from the configured Storybook.

Example:

Available components: Accordion Avatar Badge Button ...

2. getComponentsProps

Gets detailed props information for multiple components, including:

  • Property names

  • Types

  • Default values

  • Descriptions

  • Required/optional status

Parameters:

  • componentNames (array of strings): Array of component names to get props information for

Example usage:

Tool: getComponentsProps Parameters: { "componentNames": ["Button", "Input", "Avatar"] }

Custom Tools

You can define custom tools to extract specific information from your Storybook pages. Each custom tool can:

  • Navigate to any page in your Storybook

  • Execute custom JavaScript to extract data

  • Return structured data to the AI assistant

Custom Tool Structure:

interface CustomTool { name: string; // Unique tool name description: string; // Tool description for the AI parameters: object; // Input parameters schema (optional) page: string; // URL to navigate to handler: string; // JavaScript code to execute on the page }

Example Custom Tools:

[ { "name": "getIconList", "description": "Get All Icons from the Icon page", "parameters": {}, "page": "https://your-storybook.com/?path=/docs/icon--docs", "handler": "Array.from(document.querySelectorAll('.icon-name')).map(i => i.textContent)" }, { "name": "getColorPalette", "description": "Extract color palette from design tokens", "parameters": {}, "page": "https://your-storybook.com/?path=/docs/design-tokens--colors", "handler": "Array.from(document.querySelectorAll('.color-swatch')).map(el => ({ name: el.getAttribute('data-color-name'), value: el.style.backgroundColor }))" } ]

For more examples and detailed documentation, see examples/custom-tools-example.md.

Example

Set Spectrum storybook-mcp config with STORYBOOK_URL and CUSTOM_TOOLS environment variables.

{ "mcpServers": { "storybook-mcp": { "command": "npx", "args": ["-y", "storybook-mcp@latest"], "env": { "STORYBOOK_URL": "https://opensource.adobe.com/spectrum-web-components/storybook/index.json", "CUSTOM_TOOLS": "[{\"name\":\"getIconList\",\"description\":\"Get All Icons from the Icon page\",\"parameters\":{},\"page\":\"https://opensource.adobe.com/spectrum-web-components/storybook/iframe.html?viewMode=docs&id=icons--docs&globals=\",\"handler\":\"Array.from(document.querySelector('icons-demo').shadowRoot.querySelectorAll('.icon')).map(i => i.textContent)\"}]" } } } }

How it works

  1. Component List: The server fetches the Storybook's index.json file(v3 is stories.json) and extracts all components marked as "docs" type

  2. Props Information: For component props, the server:

    • Finds the component's documentation ID from the index.json

    • Constructs the iframe URL for the component's docs page

    • Uses Playwright to load the page in a headless browser

    • Extracts the props table HTML from the documentation

Supported Storybook URLs

The server works with any Storybook that exposes an index.json file(v3 is stories.json). Common patterns:

  • https://your-storybook-domain.com/index.json

  • https://your-storybook-domain.com/storybook/index.json

Development

Local Development

  1. Clone the repository

  2. Install dependencies: yarn install

  3. Install Playwright browsers: npx playwright install chromium

  4. Set the environment variable: export STORYBOOK_URL="your-storybook-url"

  5. Run in development mode: yarn dev

Note: You can also use npx @modelcontextprotocol/inspector tsx src/index.ts instead of yarn dev if you prefer.

Building

yarn build

Testing

yarn test

Requirements

  • Node.js 18.0.0 or higher

  • Chromium browser (automatically installed with Playwright)

Error Handling

The server includes comprehensive error handling for:

  • Missing or invalid Storybook URLs

  • Network connectivity issues

  • Component not found scenarios

  • Playwright browser automation failures

License

Storybook MCP is MIT licensed.

Deploy Server
-
security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

Tools

A Model Context Protocol (MCP) server for Storybook.

  1. Features
    1. Installation and Configuration
      1. MCP Settings
      2. Environment Variables
    2. Usage
      1. Built-in Tools
      2. Custom Tools
    3. Example
      1. How it works
        1. Supported Storybook URLs
          1. Development
            1. Local Development
            2. Building
            3. Testing
          2. Requirements
            1. Error Handling
              1. License

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