ToolVet
15trust / 100

Polymarket Precio Cripto Pago

by Vextorium in Markets & finance

x402 APIFailing, checked 4 h ago

Implied probability distribution of a crypto price from Polymarket ladder markets ("Will BTC be above X on date D?"): probability for each price level and date and the implied median. BTC, ETH, SOL, XRP.

POST
https://api.vextorium.com/polymarket-precio-cripto-pago
Price
$0.004
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 4 h ago: Amount "0.004" is not in atomic token units

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.vextorium.com/polymarket-precio-cripto-pago

Each call costs $0.004 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.vextorium.com/polymarket-precio-cripto-pago
content-type: application/json

{
  "activo": "bitcoin"
}

Parameters

ParameterTypeRequiredDescription
activostringNobitcoin, ethereum, solana, xrp

Example response

The provider's example. We can't check it without paying.

Example response, 36 lines
{
  "activo": "bitcoin",
  "eventos": [
    {
      "cierre": "2026-10-02T21:00:00Z",
      "evento": "Bitcoin above ___ on October 2, 5PM ET?",
      "mediana_implicita_aprox": 82200,
      "niveles": [
        {
          "nivel": 82200,
          "prob_por_encima_pct": 50
        },
        {
          "nivel": 82400,
          "prob_por_encima_pct": 50
        }
      ]
    },
    {
      "cierre": "2026-10-03T16:00:00Z",
      "evento": "Bitcoin above ___ on October 3?",
      "mediana_implicita_aprox": 86000,
      "niveles": [
        {
          "nivel": 74000,
          "prob_por_encima_pct": 99.95
        },
        {
          "nivel": 76000,
          "prob_por_encima_pct": 99.9
        }
      ]
    }
  ],
  "nota": "Probabilidades implícitas por el mercado; no son predicciones garantizadas. Fuente: Polymarket."
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

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

# 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/polymarket-precio-cripto-pago' \
  -H 'content-type: application/json' \
  --data-raw '{"activo":"bitcoin"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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%2Fpolymarket-precio-cripto-pago&method=POST
const res = await pay("https://api.vextorium.com/polymarket-precio-cripto-pago", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "activo": "bitcoin"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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/polymarket-precio-cripto-pago",
        json={
            "activo": "bitcoin",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
4 h agoAmount "0.004" is not in atomic token units402235 ms$0.004
9 h agoAmount "0.004" is not in atomic token units402178 ms$0.004
14 h agoAmount "0.004" is not in atomic token units402147 ms$0.004
19 h agoAmount "0.004" is not in atomic token units402277 ms$0.004
23 h agoAmount "0.004" is not in atomic token units40293 ms$0.004
Show 10 older checks
28 h agoAmount "0.004" is not in atomic token units40284 ms$0.004
33 h agoAmount "0.004" is not in atomic token units40289 ms$0.004
38 h agoAmount "0.004" is not in atomic token units402268 ms$0.004
42 h agoAmount "0.004" is not in atomic token units402277 ms$0.004
47 h agoAmount "0.004" is not in atomic token units40298 ms$0.004
2 days agoAmount "0.004" is not in atomic token units40284 ms$0.004
2 days agoAmount "0.004" is not in atomic token units40276 ms$0.004
3 days agoAmount "0.004" is not in atomic token units40288 ms$0.004
3 days agoAmount "0.004" is not in atomic token units402281 ms$0.004
3 days agoAmount "0.004" is not in atomic token units40281 ms$0.004