the402 endpoint detail

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polymarket-markets.hergertsynthora.com service

https://polymarket-markets.hergertsynthora.com/service

answers 402

Live prediction-market data from Polymarket: active markets, prices, volume and liquidity via the public Gamma API. Deterministic JSON, no key. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.05
Network
base
Pay to
0x10800a5a5B9d72251566EC651E862A8b4B427dE0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
980 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:30:02.184Z (4d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fpolymarket-markets.hergertsynthora.com%2Fservice"