77trust / 100

Polymarket Odds

by Polymarket Odds & Probability in Markets & finance

x402 APIPassing, checked 4 h ago

๐Ÿ†• Queries Polymarket's Gamma CLOB for active prediction markets. Resolves event outcome probabilities (Yes/No %), 24h volume, liquidity, and resolution date in one call. Designed for AI agents that need a real-world reality check before trading, hedging, or rebalancing treasury. Pass query= (e.g. 'fed', 'btc', 'kraken-ipo-in-2025'). A probabilistic signal, not financial advice.

GET
https://402.com.tr/api/x402/polymarket-odds
Price
$0.02
per call in USDC
Uptime
100%
last 30 days
Response time
523 ms
692 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

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

How to call it

GET https://402.com.tr/api/x402/polymarket-odds

Each call costs $0.02 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.

GET https://402.com.tr/api/x402/polymarket-odds?query=fed

Parameters

ParameterTypeRequiredDescription
querystringYesMarket topic, question or slug

Example response

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

{
  "checkedAt": "2026-10-13T03:01:09.113Z",
  "consensusProbability": "0.0%",
  "endDate": "2025-12-31T12:00:00Z",
  "found": true,
  "outcomesCount": 2,
  "query": "fed",
  "slug": "kraken-ipo-in-2025",
  "verdict": "unlikely"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.02.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://402.com.tr/api/x402/polymarket-odds?query=fed'

# 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://402.com.tr/api/x402/polymarket-odds?query=fed' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Fpolymarket-odds
const res = await pay("https://402.com.tr/api/x402/polymarket-odds?query=fed");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://402.com.tr/api/x402/polymarket-odds?query=fed")
    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 agoPassed402579 ms$0.02
9 h agoPassed402780 ms$0.02
13 h agoPassed402515 ms$0.02
18 h agoPassed402616 ms$0.02
22 h agoPassed402478 ms$0.02
Show 10 older checks
27 h agoPassed402555 ms$0.02
31 h agoPassed402506 ms$0.02
35 h agoPassed402432 ms$0.02
39 h agoPassed402523 ms$0.02
43 h agoPassed402526 ms$0.02
2 days agoPassed402692 ms$0.02
2 days agoPassed402373 ms$0.02
2 days agoPassed402515 ms$0.02
3 days agoPassed402557 ms$0.02
3 days agoPassed402574 ms$0.02