Interest Rates

{
  "euroArea": {
    "centralBank": "European Central Bank",
    "rates": [
      {
        "code": "DFR",
        "effectiveSince": "2026-09-16",
        "name": "Deposit facility rate",
        "ratePct": 2.5
      }
    ]
  },
  "retrievedAt": "2026-10-13T15:10:00.000Z",
  "unitedStates": {
    "centralBank": "Federal Reserve",
    "federalFundsTargetRange": {
      "asOf": "2026-10-08",
      "fromPct": 3.75,
      "toPct": 4
    },
    "rates": [
      {
        "code": "EFFR",
        "date": "2026-10-08",
        "name": "Effective Federal Funds Rate",
        "ratePct": 3.88
      }
    ]
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://x402-apis.pages.dev/v1/interest-rates?region=all'

# 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://x402-apis.pages.dev/v1/interest-rates?region=all' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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%2Fx402-apis.pages.dev%2Fv1%2Finterest-rates
const res = await pay("https://x402-apis.pages.dev/v1/interest-rates?region=all");
console.log(res.status, await res.text());

# 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://x402-apis.pages.dev/v1/interest-rates?region=all")
    print(res.status_code, res.text)