Stablecoins

{
  "as_of": "2026-08-01",
  "count": 2,
  "note": "peg_deviation_pct is a large positive number for a few yield-bearing tokenized-treasury instruments classified here as USD-pegged (e.g. USYC, BUIDL) -- that's legitimate NAV growth above $1 from accruing yield, not a depeg. It's a real signal only for pure fiat/crypto-backed stablecoins meant to hold exactly $1 (USDT, USDC, DAI, etc.).",
  "stablecoins": [
    {
      "market_cap_change_1d_pct": -0.0235,
      "market_cap_change_7d_pct": -0.5679,
      "market_cap_usd": 183237992492.22223,
      "name": "Tether",
      "peg_deviation_pct": -0.0904,
      "peg_mechanism": "fiat-backed",
      "price": 0.9990962828003668,
      "symbol": "USDT"
    },
    {
      "market_cap_change_1d_pct": 0.0302,
      "market_cap_change_7d_pct": -2.1372,
      "market_cap_usd": 72069997301.03093,
      "name": "USD Coin",
      "peg_deviation_pct": -0.01,
      "peg_mechanism": "fiat-backed",
      "price": 0.9999001788223568,
      "symbol": "USDC"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://www.x402financialdata.com/stablecoins?limit=1'

# 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://www.x402financialdata.com/stablecoins?limit=1' \
  | 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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.x402financialdata.com%2Fstablecoins
const res = await pay("https://www.x402financialdata.com/stablecoins?limit=1");
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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://www.x402financialdata.com/stablecoins?limit=1")
    print(res.status_code, res.text)