UTEXO MCP

A hosted Model Context Protocol server that gives Claude and other AI clients a set of secret-free Bitcoin & RGB tools — no API keys, nothing to install, nothing that can move funds.

Live: https://mcp.gogettest.online · Endpoint: https://mcp.gogettest.online/mcp · Docs: https://mcp.gogettest.online/docs

Add it to your AI

Client	How
Claude (Pro/Team/Enterprise)	Settings → Connectors → Add custom connector → paste `https://mcp.gogettest.online/mcp`
Cursor	One-click deep link on the site, or add `{ "url": "https://mcp.gogettest.online/mcp" }` to `~/.cursor/mcp.json`
VS Code (Copilot agent)	One-click deep link, or add an `http` server pointing at the URL
Claude Desktop / stdio	`npx -y mcp-remote https://mcp.gogettest.online/mcp`

Claude Desktop config:

{
  "mcpServers": {
    "utexo": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.gogettest.online/mcp"]
    }
  }
}

Tools

Tool	Description
`utexo_project_info`	Curated overview of the UTEXO Protocol and its building blocks.
`bitcoin_network_status`	Chain tip height, recommended fees and mempool summary.
`bitcoin_fee_estimates`	Recommended sat/vByte fee rates by confirmation target.
`bitcoin_price`	Current BTC spot price in major fiat currencies.
`estimate_transaction_fee`	Estimate a tx fee from vsize (or input/output counts) at live rates.
`bitcoin_address`	Balance (sats/BTC) and tx counts for a Bitcoin address.
`bitcoin_transaction`	Status, confirmations, fee and size for a txid.
`bitcoin_block`	Header details by block height or hash.
`verify_merkle_proof`	Offline Bitcoin SPV Merkle inclusion-proof verification (with position-binding hardening).

All tools are read-only or fully offline. The server holds no secrets and cannot sign anything.

Run locally

npm install
PORT=8791 npm start
# MCP endpoint: http://127.0.0.1:8791/mcp

Environment: PORT (default 8791), HOST (default 127.0.0.1), BITCOIN_API_BASE (default https://mempool.space/api).

Architecture

Node.js (ESM), Express, @modelcontextprotocol/sdk.
Transport: Streamable HTTP, stateless (a fresh MCP server + transport per request).
The same Node process serves the static landing page and docs, plus the /mcp endpoint.
Deployed behind nginx with Let's Encrypt TLS and kept alive by PM2.

src/
  server.mjs    HTTP server + MCP wiring (Streamable HTTP, stateless)
  tools.mjs     tool definitions
  bitcoin.mjs   read-only mempool.space-compatible client
  merkle.mjs    pure Bitcoin Merkle-proof verification
public/
  index.html    landing page ("Add to Claude")
  docs.html     documentation
  styles.css

License

MIT — see LICENSE.