ToolVet
77trust / 100

Fx

by Tanod utilpeek in Markets & finance

x402 APIPassing, checked 3 h ago

utilpeek (Tanod) FX rates: ECB euro foreign exchange reference rates (free of charge at ecb.europa.eu) for any base, latest or a date in the last 90 days; non-EUR bases are cross rates computed by Tanod. For information only.

POST
https://tanod.dev/v1/fx
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
336 ms
992 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

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Status and outage history · Atom feed

How to call it

POST https://tanod.dev/v1/fx

Each call costs $0.001 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://tanod.dev/v1/fx
content-type: application/json

{
  "base": "USD",
  "symbols": [
    "EUR",
    "JPY",
    "GBP"
  ]
}

Parameters

ParameterTypeRequiredDescription
basestringYesBase currency: an ISO 4217 code with an ECB reference rate, or EUR.
datestring or nullNoOptional YYYY-MM-DD within the last 90 days (default: latest); a non-publication day uses the previous publication day. Default: null.
symbolsarray of string or nullNoOptional: 1-40 ISO 4217 codes to return (default: every currency the ECB publishes). Default: null.

Example response

The provider's example. We can't check it without paying.

{
  "attribution": {
    "disclaimer": "The ECB publishes the reference rates for information purposes only; using them for transaction purposes is strongly discouraged.",
    "free_of_charge": "The ECB reference rates are available free of charge from the ECB website (url above).",
    "modification": "Rates for a base other than EUR are cross rates computed by this service from the ECB EUR reference rates (rate(symbol) / rate(base), rounded to 8 significant digits); EUR-base rates are the ECB figures unchanged.",
    "source": "European Central Bank (ECB), euro foreign exchange reference rates",
    "url": "https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html"
  },
  "base": "USD",
  "cached": false,
  "date": "2026-10-06",
  "rates": {
    "EUR": "0.88739019",
    "GBP": "0.75321679",
    "JPY": "158.08856"
  },
  "requested_date": null,
  "stale": false
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://tanod.dev/v1/fx' \
  -H 'content-type: application/json' \
  --data-raw '{"base":"USD","symbols":["EUR","JPY","GBP"]}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://tanod.dev/v1/fx' \
  -H 'content-type: application/json' \
  --data-raw '{"base":"USD","symbols":["EUR","JPY","GBP"]}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftanod.dev%2Fv1%2Ffx&method=POST
const res = await pay("https://tanod.dev/v1/fx", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "base": "USD",
    "symbols": [
      "EUR",
      "JPY",
      "GBP"
    ]
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://tanod.dev/v1/fx",
        json={
            "base": "USD",
            "symbols": [
                "EUR",
                "JPY",
                "GBP",
            ],
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402814 ms$0.001
8 h agoPassed402336 ms$0.001
12 h agoPassed402274 ms$0.001
16 h agoPassed402436 ms$0.001
20 h agoPassed402801 ms$0.001
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23 h agoPassed402992 ms$0.001
27 h agoPassed402285 ms$0.001
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35 h agoPassed4021.1 s$0.001
38 h agoPassed402275 ms$0.001
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2 days agoPassed402373 ms$0.001
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2 days agoPassed402808 ms$0.001