Synergic APIs MCP server

Synergic APIs — MCP Server

Official Model Context Protocol server for Synergic APIs: official US economic data for AI agents. It gives Claude, Cursor, and any MCP-capable client direct access to:

11 categories, YoY/MoM rates computed like the BLS, monthly history back to 1913, official annual averages.

• US Inflation API — the official CPI-U from the Bureau of Labor Statistics:

beef, coffee and electricity, monthly since 1976.

• Famous prices — US average price of eggs, gasoline, milk, bread, ground

day since 1993, annual debt outstanding since 1790, and the average interest rates the Treasury pays.

• US National Debt API — the U.S. Treasury debt to the penny, every business

All amounts are JSON numbers, periods are YYYY-MM / YYYY-MM-DD, and missing months in the official record are served as null — never invented.

Requirements

synergicapis.com/signup.html** — 500 requests/month, both APIs, full history. Paid plans at synergicapis.com/pricing.html.

• Node.js 18.17+ (npx included).
• A Synergic APIs key. **Get one free (no credit card) at

Installation

The server runs over stdio via npx — no clone, no build.

Claude Desktop

Add to claudedesktopconfig.json (Settings → Developer → Edit Config):

{
  "mcpServers": {
    "synergic-apis": {
      "command": "npx",
      "args": ["-y", "@synergic-apis/mcp"],
      "env": {
        "SYNERGIC_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Claude Code

claude mcp add synergic-apis --env SYNERGIC_API_KEY=YOUR_API_KEY -- npx -y @synergic-apis/mcp

Cursor

Add to ~/.cursor/mcp.json (or .cursor/mcp.json in your project):

{
  "mcpServers": {
    "synergic-apis": {
      "command": "npx",
      "args": ["-y", "@synergic-apis/mcp"],
      "env": {
        "SYNERGIC_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

Configuration

Tools

History tools paginate by period range: when a response's meta.next_end is not null, call the tool again with end set to that value to get older data.

Try it

Ask your assistant things like:

• "What is US inflation right now, headline and core?"
• "Plot the price of eggs since 2020."
• "How much did the US national debt grow in the last 12 months?"
• "What rate does the Treasury pay on T-bills today vs 2021?"

Shortened. The full README is on GitHub.