Croissant MCP Server POC

A Model Context Protocol (MCP) server POC for indexing and providing access to Croissant datasets.

Interact w MCP server at your MCP client (e.g. Cursor)

Copy paste following (dont worry about "your-api-key", just copy paste as you see below) into the mcp.jsonof your MCP client:

{
  "mcpServers": {
    "croissant-mcp": {
      "url": "http://54.188.239.243:8000/sse",
      "transport": "sse",
      "env": {
        "API_KEY": "your-api-key"
      }
    }
  }
}

Available Endpoints

• /health - Health check endpoint
• /mcp - MCP endpoints
• /events - SSE events for real-time updates
• /docs - API documentation

Available Tools

Dataset Discovery

• list_datasets() - List all available datasets
• search_datasets(query: str) - Search datasets by name, description, or tags
• list_sources() - List all data sources
• get_source_datasets(source: str) - Get datasets from a specific source

Data Access

• get_dataset_metadata(dataset_id: str) - Get detailed metadata

Adding New Tools

1. Create a new tool function in src/tools/
2. Decorate with @tool()
3. Add type hints and docstrings
4. Register in src/server.py