S

SYNTHORA · Polymarket Whales

by SYNTHORA

POSTBase

$0.15

per call · USD Coin on Base

Live whale-tracking on Polymarket: the latest large trades (default >= 5000 USD, tunable via min_usd) with wallet, side, outcome, size, price, USD value, market title/slug and tx hash, straight from Polymarket public trades data API. Built for prediction-market agents that track smart money before trading. No charge on service failure. Ed25519-signed. $0.15 USDC per call via x402 on Base. Free trial: 3 calls per wallet with header X-WALLET.

Endpoint

POST https://api.hergertsynthora.com/v1/polymarket-whales

1

Calls / 30d

1

Unique payers / 30d

Aug 19

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://api.hergertsynthora.com/v1/polymarket-whales", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "limit": 20,
    "min_usd": 10000,
    "side": "all"
  }),
});
const data = await res.json();
cURL
curl -X POST \
  "https://api.hergertsynthora.com/v1/polymarket-whales" \
  -H "Content-Type: application/json" \
  -d '{"limit":20,"min_usd":10000,"side":"all"}' \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "niche": "polymarket_whales",
  "ok": true,
  "result": {
    "count": 20,
    "min_usd": 10000,
    "top_markets_by_whale_usd": [],
    "total_usd": 250000,
    "unique_wallets": 14,
    "whale_trades": [
      {
        "market": "...",
        "market_slug": "...",
        "outcome": "Yes",
        "price": 0.62,
        "side": "BUY",
        "size": 10000,
        "timestamp_utc": "...",
        "tx": "0x...",
        "usd_value": 6200,
        "wallet": "0x..."
      }
    ]
  }
}

Payment details

Pay to0x10800a5a5b9d72251566ec651e862a8b4b427de0
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact

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