Fx Rates

Last 30 days

Uptime

100%

Response time

45 ms typical, 45 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://fiatdock.com/v1/fx/rates" \
  -H "content-type: application/json" \
  -d '{"amount":100,"from":"USD","to":"EUR,GBP"}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffiatdock.com%2Fv1%2Ffx%2Frates
const res = await pay("https://fiatdock.com/v1/fx/rates", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"amount":100,"from":"USD","to":"EUR,GBP"}),
});
console.log(await res.json());

Example input

{
  "amount": 100,
  "from": "USD",
  "to": "EUR,GBP"
}

Example output

{
  "amount": 100,
  "asOf": "2026-10-05T00:00:00.000Z",
  "ecbDate": "2026-10-02",
  "from": "USD",
  "note": "rate = units of each target one USD buys (a mid rate, before any spread or fee).",
  "rates": [
    {
      "converted": 85.1,
      "deviationFromEcbPct": -0.024,
      "ecbRate": 0.8512,
      "rate": 0.851,
      "to": "EUR"
    },
    {
      "converted": 74.2,
      "deviationFromEcbPct": 0.013,
      "ecbRate": 0.7419,
      "rate": 0.742,
      "to": "GBP"
    }
  ],
  "source": "Coinbase exchange rates (live mid) + ECB reference rates via Frankfurter"
}

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