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MCP (Model Context Protocol) Integration

Catalyst provides Model Context Protocol (MCP) integration that exposes a comprehensive tool providing complete context of the Catalyst framework to LLM-powered development tools like Claude Desktop, Cursor, and Deputy Dev. This enables more accurate and framework-aware assistance during development.

Setting Up MCP Support​

When creating a new Catalyst application, you can enable MCP support during the setup process:

npx create-catalyst-app@latest

You'll be prompted with:

Add MCP (Model Context Protocol) support? (Y/n)

Selecting Y will create a local mcp.js file in your project that can be linked to any MCP-supporting client.

Connecting to MCP Clients​

Replace /complete/path/to/your/project/mcp/mcp.js with the absolute path to your project's mcp.js file.

Claude Desktop​

To connect your Catalyst MCP server to Claude Desktop, add the following configuration to your claude_desktop_config.json file:

{
  "mcpServers": {
    "catalyst": {
      "command": "node",
      "args": ["/complete/path/to/your/project/mcp/mcp.js"]
    }
  }
}

Cursor​

For Cursor integration, create or update .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "catalyst": {
      "command": "node",
      "args": ["/complete/path/to/your/project/mcp/mcp.js"]
    }
  }
}

Deputy Dev​

For Deputy Dev integration, create or update .deputydev/mcp_settings.json in your project root:

{
  "mcp_servers": {
    "catalyst": {
      "command": "node",
      "args": ["/complete/path/to/your/project/mcp/mcp.js"]
    }
  }
}