LittleSis MCP Server

An MCP (Model Context Protocol) server that provides access to the LittleSis API for tracking corporate power and accountability relationships.

Installing via Smithery

To install littlesis-mcp for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @code-rabi/littlesis-mcp --client claude

API Coverage

This MCP server implements all major LittleSis API endpoints:

Entity Tools

• get_entity - Get detailed information about a specific entity

• get_entities - Get multiple entities at once (up to 300)

• search_entities - Search for entities by name with filtering

• get_entity_extensions - Get entity types/classifications

• get_entity_relationships - Get all relationships for an entity

• get_entity_connections - Get connected entities

• get_entity_lists - Get lists an entity appears on

Relationship Tools

• get_relationship - Get detailed relationship information

Related MCP server: mcp-edgar

Usage Examples

{
    "mcpServers": {
        "littlesis": {
            "command": "node",
            "args": ["dist/index.js"],
            "cwd": "/path/to/littlesis-mcp"
        }
    }
}

Data License

All data accessed through this MCP server is from LittleSis and is licensed under CC BY-SA 4.0.

About LittleSis

LittleSis is a free database of who-knows-who at the heights of business and government. It tracks the revolving door between business and government, political donations, and more.

License

MIT License - see LICENSE file for details.