Tokenized Stock Ranking

{
  "by_issuer": {
    "Ondo Global Markets": {
      "holders": 14567,
      "market_cap_usd": 22952154,
      "tokens": 50
    },
    "xStocks (Backed)": {
      "holders": 700835,
      "market_cap_usd": 1845249030,
      "tokens": 63
    }
  },
  "note": "Token price on Solana DEXs (Jupiter), not the stock exchange quote; it may deviate from the underlying.",
  "ranking": [
    {
      "change_24h_pct": -0.62,
      "holders": 3498,
      "issuer": "xStocks (Backed)",
      "liquidity_usd": 1864,
      "mint": "XsEH7wWfJJu2ZT3UCFeVfALnVA6CP5ur7Ee11KmzVpL",
      "onchain_market_cap_usd": 105539672,
      "ticker": "NFLX",
      "token": "NFLXx",
      "token_price_usd": 68.06514825103919
    },
    {
      "change_24h_pct": 4.32,
      "holders": 43671,
      "issuer": "xStocks (Backed)",
      "liquidity_usd": 1448524,
      "mint": "XsDoVfqeBukxuZHWhdvWHBhgEHjGNst4MLodqsJHzoB",
      "onchain_market_cap_usd": 84992172,
      "ticker": "TSLA",
      "token": "TSLAx",
      "token_price_usd": 370.1167277077935
    }
  ],
  "total_market_cap_usd": 1868201184
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/tokenized-stock-ranking' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":10}'

# 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://api.vextorium.com/v1/tokenized-stock-ranking' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":10}' \
  | 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 $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
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 $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Ftokenized-stock-ranking&method=POST
const res = await pay("https://api.vextorium.com/v1/tokenized-stock-ranking", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 10
  }),
});
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 $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/tokenized-stock-ranking",
        json={
            "limit": 10,
        },
    )
    print(res.status_code, res.text)