ToolVet
81trust / 100

Fx History

by FXRate by YourAITools in Markets & finance

x402 APIPassing, checked 2 h ago

Historical exchange rate API for AI agents. Daily ECB reference rates for one currency pair between two dates (up to 366 days, back to 1999), with first, last, min, max and percent change. Search intents: historical exchange rates api, fx time series, currency history, eur usd chart data, forex history.

GET
https://api.youraitools.co/fx/v1/history
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
144 ms
1.4 s slowest 5%
Last check
Passed
2 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://api.youraitools.co/fx/v1/history

Each call costs $0.002 in USDC on Polygon, 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.

GET https://api.youraitools.co/fx/v1/history?base=EUR&end=2026-10-23&quote=USD&start=2026-10-01

Parameters

ParameterTypeRequiredDescription
basestringYesBase currency: ISO 4217 code, e.g. USD, EUR, GBP, JPY (31 supported)
endstringNoYYYY-MM-DD end date (default: today); max 366 days after start
quotestringYesQuote currency: ISO 4217 code, e.g. USD, EUR, GBP, JPY (31 supported)
startstringYesYYYY-MM-DD start date

Example response

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

Example response, 29 lines
{
  "base": "EUR",
  "count": 17,
  "end": "2026-10-23",
  "points": [
    {
      "date": "2026-10-01",
      "rate": 1.1298
    },
    {
      "date": "2026-10-02",
      "rate": 1.1225
    },
    {
      "date": "2026-10-23",
      "rate": 1.1193
    }
  ],
  "quote": "USD",
  "source": "Source: ECB statistics (euro foreign exchange reference rates), via the open-source Frankfurter API.",
  "start": "2026-10-01",
  "stats": {
    "change_pct": -0.93,
    "first": 1.1298,
    "last": 1.1193,
    "max": 1.1298,
    "min": 1.1172
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.youraitools.co/fx/v1/history?base=EUR&end=2026-10-23&quote=USD&start=2026-10-01'

# 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 - 'https://api.youraitools.co/fx/v1/history?base=EUR&end=2026-10-23&quote=USD&start=2026-10-01' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.youraitools.co%2Ffx%2Fv1%2Fhistory
const res = await pay("https://api.youraitools.co/fx/v1/history?base=EUR&end=2026-10-23&quote=USD&start=2026-10-01");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.youraitools.co/fx/v1/history?base=EUR&end=2026-10-23&quote=USD&start=2026-10-01")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
2 h agoPassed40295 ms$0.002
9 h agoPassed402316 ms$0.002
17 h agoPassed402183 ms$0.002
25 h agoPassed402142 ms$0.002
32 h agoPassed402188 ms$0.002
Show 9 older checks
40 h agoPassed4021.4 s$0.002
47 h agoPassed402144 ms$0.002
2 days agoPassed402123 ms$0.002
3 days agoPassed402167 ms$0.002
3 days agoPassed402188 ms$0.002
3 days agoPassed402188 ms$0.002
3 days agoPassed40224 ms$0.002
4 days agoPassed40213 ms$0.002
4 days agoPassed402124 ms$0.002