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Mercury402: Treasury/FRED financial data over x402

MCP server · hosted · installable · v0.1.4 · io.github.dudman1/mercury402-mcp
Online · tested 1d agoNEW · 1d agoSeen in the registry 1d ago

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

Website ↗Source code ↗How to connect ↓

What it does

Mercury402: Treasury/FRED financial data over x402 is an MCP server, a connector that lets an AI assistant use it as a tool. It can be used hosted (nothing to install) or installed locally.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.

At a glance

Hosted (remote)YES
Local installYES
Version0.1.4
Packagesnpm
PriceNot in the registry
First seen26 Oct 2026
Last checked1d ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 1d ago (live check)

Hosted endpoint

  • https://mcp.mercury402.com/mcp streamable-http

In Claude Code: claude mcp add --transport http mercury402-treasury-fred-financial-data-over-x402 https://mcp.mercury402.com/mcp

Install package

  • NPM mercury402-mcp v0.1.4 · runs locally (stdio)

MCP settings (Claude Desktop, Cursor and other MCP clients)

{
  "mcpServers": {
    "mercury402-treasury-fred-financial-data-over-x402": {
      "url": "https://mcp.mercury402.com/mcp"
    }
  }
}

Live check

Electra Index connected to the hosted endpoint 1d ago

ONLINE Mercury402: Treasury/FRED financial data over x402 answered an MCP connection on 26 Oct 2026 and introduced itself as mercury402 0.1.3 (MCP protocol 2025-06-18).

2 tools offered to AI assistants

  • 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-mc

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.

Facts & evidence

Each fact shows where it was seen and when.
FactValueEvidenceSourceLast confirmed
Install packagemercury402-mcpDECLAREDSRC-001 Official MCP Registry1d ago
Hosted endpointhttps://mcp.mercury402.com/mcpDECLAREDSRC-001 Official MCP Registry1d ago
Package registriesnpmDECLAREDSRC-001 Official MCP Registry1d ago
Local install (package)yesDECLAREDSRC-001 Official MCP Registry1d ago
Remote access (hosted)yesDECLAREDSRC-001 Official MCP Registry1d ago
Websitehttps://mercury402.comDECLAREDSRC-001 Official MCP Registry1d ago
Repositoryhttps://github.com/dudman1/mercury402DECLAREDSRC-001 Official MCP Registry1d ago
Registry statusactiveDECLAREDSRC-001 Official MCP Registry1d ago
Version0.1.4DECLAREDSRC-001 Official MCP Registry1d ago
MCP serveryesDECLAREDSRC-001 Official MCP Registry1d ago

Change history

  • NEW26 Oct 2026
    first seen in the index

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Questions about Mercury402: Treasury/FRED financial data over x402

How do I connect Mercury402: Treasury/FRED financial data over x402?

Use the hosted endpoint https://mcp.mercury402.com/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Mercury402: Treasury/FRED financial data over x402 offer?

When Electra Index connected on 26 Oct 2026, it listed 2 tools: list_endpoints, get_endpoint_data. The full list is in "Live check" above.

Is Mercury402: Treasury/FRED financial data over x402 online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 1d ago.