Catalogo Tokenizadas Pago

{
  "emisores": [
    "Ondo Global Markets",
    "xStocks (Backed)"
  ],
  "fuente": {
    "Ondo Global Markets": "Tokens emitidos por la autoridad del programa oficial de Ondo (github.com/ondoprotocol/global-markets-solana), descubiertos on-chain",
    "xStocks (Backed)": "Lista publicada por la Fundacion Solana (solana.com/news/case-study-xstocks), verificada on-chain"
  },
  "nombre": "NVIDIA",
  "nota": "Versiones tokenizadas verificadas on-chain por la autoridad de emision. No es una recomendacion de inversion.",
  "ticker": "NVDA",
  "versiones": [
    {
      "emisor": "Ondo Global Markets",
      "mint": "gEGtLTPNQ7jcg25zTetkbmF7teoDLcrfTnQfmn2ondo",
      "nombre": "NVIDIA (Ondo Tokenized)",
      "red": "solana",
      "simbolo": "NVDAon",
      "ticker": "NVDA"
    },
    {
      "emisor": "xStocks (Backed)",
      "mint": "Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh",
      "nombre": "NVIDIA xStock",
      "red": "solana",
      "simbolo": "NVDAx",
      "ticker": "NVDA"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/catalogo-tokenizadas-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"ticker":"NVDA"}'

# 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/catalogo-tokenizadas-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"ticker":"NVDA"}' \
  | 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%2Fcatalogo-tokenizadas-pago&method=POST
const res = await pay("https://api.vextorium.com/catalogo-tokenizadas-pago", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "ticker": "NVDA"
  }),
});
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/catalogo-tokenizadas-pago",
        json={
            "ticker": "NVDA",
        },
    )
    print(res.status_code, res.text)