Mercury402: Treasury/FRED financial data over x402

io.github.dudman1/mercury402-mcpVersion 0.1.4

Treasury/FRED financial data over x402: pay-per-call US yields, macro and forex in USDC on Base

Status

Responds464 msNov 14, 2026, 14:50 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:50 UTC
Latency: 464 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://mcp.mercury402.com/mcpResponds464 msNov 14, 2026, 14:50 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: mercury402-mcp
Remote MCP server URL: https://mcp.mercury402.com/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"mercury402-mcp","type":"http","url":"https://mcp.mercury402.com/mcp"}'

Streamable HTTP

npm: mercury402-mcp 0.1.4

Package only

npm (npx)

claude mcp add mercury402-mcp -- npx -y mercury402-mcp@0.1.4

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Tools

2 tools

Tools of Mercury402: Treasury/FRED financial data over x402
	Description		Read-only	Idempotent	Open world
`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 your own wallet. Use list_endpoints first to find paths and parameters. Path params can be inline ("/v1/fred/UNRATE") or passed in params ("/v1/fred/{series_id}" + {"series_id":"UNRATE"}). Other params go to the query string (GET) or JSON body (POST).	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 your own wallet. Use list_endpoints first to find paths and parameters. Path params can be inline ("/v1/fred/UNRATE") or passed in params ("/v1/fred/{series_id}" + {"series_id":"UNRATE"}). Other params go to the query string (GET) or JSON body (POST).	Not declared	No	No	Yes
`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.	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.	Not declared	Yes	Not declared	No

Details

Registry status: Active
Published: Oct 26, 2026
Updated: Oct 26, 2026
Website: https://mercury402.com/⁠ (opens in a new tab)
Repository: https://github.com/dudman1/mercury402⁠ (opens in a new tab)
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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