Mercury402: Treasury/FRED financial data over x402

Connect Remote server

claude mcp add --transport http mercury402-mcp https://mcp.mercury402.com/mcp

{
  "mcpServers": {
    "mercury402-mcp": {
      "url": "https://mcp.mercury402.com/mcp"
    }
  }
}

{
  "servers": {
    "mercury402-mcp": {
      "type": "http",
      "url": "https://mcp.mercury402.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://mcp.mercury402.com/mcp

Tools 2 found in our last check

• list_endpoints

  List Mercury402 financial data endpoints (78 total) with path, method, category, description, price in USD (paid per call in USDC on Base via x402) and accepted parameters. Free; makes no network calls.

• get_endpoint_data

  Call a Mercury402 endpoint on the live API. This hosted endpoint is discovery-only: endpoints return HTTP 402 and this tool returns the price and x402 payment instructions instead of data. Pay with your own x402 client, or run mercury402-mcp locally (npx -y mercury402-mcp) with…

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