@capitoltrace/mcp-server

Congressional intelligence for AI assistants. Connect Claude, GPT, or any MCP-compatible AI to real-time legislative data from 21+ government sources.

Quick Start

1. Get an API Key

Visit capitoltrace.com/developers and sign up for a free key.

2. Add to Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on Mac, %APPDATA%\Claude\claude_desktop_config.json on Windows):

{
  "mcpServers": {
    "capitoltrace": {
      "command": "npx",
      "args": ["-y", "@capitoltrace/mcp-server"],
      "env": {
        "CAPITOLTRACE_API_KEY": "ct_live_your_key_here"
      }
    }
  }
}

3. Restart Claude Desktop

Fully quit and reopen. You'll see Capitol Trace tools available.

Available Tools (12)

| Tool | Description | Tier | |------|-------------|------| | search_members | Search 538 members by name, state, party, chamber | Free | | get_member_profile | Full dossier: terms, leadership, legislation | Free | | get_member_trades | Stock trades with STOCK Act compliance | Researcher | | get_member_donors | Campaign finance, PAC %, grassroots score | Researcher | | get_member_votes | Roll call voting record | Free | | get_member_ideology | DW-NOMINATE, bipartisan score, party unity | Researcher | | search_lobbying | Senate LDA filings by client, firm, issue | Researcher | | get_signals | AI-detected correlations (trades + votes + lobbying) | Free | | search_bills | Legislation search | Free | | get_executive_orders | Executive orders from Federal Register | Free | | get_stock_alerts | Late disclosures and suspicious patterns | Free | | compare_members | Side-by-side comparison of two members | Free |

Example Prompts

Try these with Claude:

• "Which senators on the banking committee traded financial stocks recently?"
• "Show me the top 5 most PAC-funded members of Congress"
• "Compare the ideology scores of Bernie Sanders and Ted Cruz"
• "Find all lobbying filings related to AI regulation in 2025"
• "Which members filed their stock trade disclosures late?"

Pricing

MCP queries use the same rate limits as the REST API:

| Tier | Price | Queries/Day | |------|-------|-------------| | Free | $0/mo | 100 | | Researcher | $29/mo | 5,000 | | Pro | $79/mo | 25,000 | | Newsroom | $299/mo | 100,000 |

Links

• Capitol Trace
• API Documentation
• Get API Key
• MCP Setup Guide

License

MIT — the package is free and open source. API access is gated by key tier.