the402 endpoint detail

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api.hergertsynthora.com v1 polymarket-markets

https://api.hergertsynthora.com/v1/polymarket-markets

answers 402

Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one call: live prices, implied probability, volume, liquidity, end date and market conviction. Server-side search that actually finds the market (bitcoin, fed, election, geopolitics). For trading and forecasting agents tracking event odds. $0.05 USDC x402 Base. Input: {"input": "bitcoin"} (optional filter). Ed25519-signed.

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
0xEf879BFD6C4AccB8F795136de90246e1EC245e06
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
159 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:12:24.037Z (23d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.hergertsynthora.com%2Fv1%2Fpolymarket-markets"