eu-tools-mcp

Paid MCP tools for AI agents — pay per call in USDC on Base via the x402 protocol. No signup, no API key: your agent's wallet signs a payment, the tool answers.

Built with x402-mica: every paid call is logged with a MiCA-compliance flag to a public, live audit dashboard — see below.

Tools

Tool	Price	What it does
validate_vat(country, vat_number)	$0.005	Checks an EU VAT number against the official VIES registry; returns validity + registered company name/address.
eur_fx(currency, date?)	$0.001	Official ECB euro reference rate (latest, or a business day within the last 90 days).

Endpoint: https://eu-tools-mcp.fly.dev/mcp (MCP Streamable HTTP, stateless)

Call it from an agent

Your MCP client needs x402 payment support and a funded wallet (USDC on Base, a plain EOA — smart-wallet/EIP-7702 signers are not supported by USDC's transfer authorization):

import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
import { wrapMCPClientWithPayment, x402Client } from "@x402/mcp";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.WALLET_KEY);
const mcp = wrapMCPClientWithPayment(
  new Client({ name: "my-agent", version: "1.0.0" }),
  new x402Client().register("eip155:*", new ExactEvmScheme(account)),
  { autoPayment: true },
);
await mcp.connect(new StreamableHTTPClientTransport(new URL("https://eu-tools-mcp.fly.dev/mcp")));
const res = await mcp.callTool("validate_vat", { country: "IE", vat_number: "6388047V" });

Tool listing (tools/list) is free — only calls are paid.

Live audit dashboard

Every paid call lands in a public, read-only MiCA audit trail (timestamp, asset, amount, payer, on-chain tx, mica_compliant flag):

https://eu-tools-mcp.fly.dev/audit?key=demo-c43d89b159ec2227

CSV/JSON export: append &format=csv or &format=json.

Notes

• Payment settles before the tool runs (that's x402); if VIES has a member-state outage you get a structured error for that call, not a refund. That's why the price is half a cent.
• Non-custodial: funds go payer wallet → seller wallet; this server never holds money.

Run your own

cp .env.example .env, set PAY_TO, npm install && npm run dev — then read the x402-mica docs for mainnet (CDP facilitator keys) and dashboard options.