Xstock Health

{
  "decision": "review",
  "notes": [],
  "signals": {
    "authenticity": {
      "issuer": "Backed (xStocks)",
      "registry_status": "live",
      "verified": true
    },
    "depeg_bps": 42,
    "dex_price_usd": 230.74,
    "freeze_authority": "present",
    "liquidity_usd": 3302925,
    "market_status": "closed",
    "reference_price_usd": 229.385,
    "reference_status": "live",
    "venue": "solana/raydium"
  },
  "token": {
    "address": "Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh",
    "chain": "solana",
    "issuer": "Backed (xStocks)",
    "issuer_verified": true,
    "name": "NVIDIA xStock",
    "symbol": "NVDAx"
  },
  "underlying": "NVDA"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://stockwaves.net/api/xstock/health'

# 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://stockwaves.net/api/xstock/health' \
  | 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 $0.03 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.03" });
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 $0.03 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fstockwaves.net%2Fapi%2Fxstock%2Fhealth
const res = await pay("https://stockwaves.net/api/xstock/health");
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 $0.03 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.03"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://stockwaves.net/api/xstock/health")
    print(res.status_code, res.text)