the402 endpoint detail

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api.hergertsynthora.com v1 polymarket-odds-movers

https://api.hergertsynthora.com/v1/polymarket-odds-movers

answers 402

Polymarket odds movers: active markets ranked by biggest price swing in the last 1h / 24h / 1wk (window param), with yes price, change and direction, best bid/ask, spread, 24h volume, liquidity and end date. The momentum signal prediction bots scan before entering a market. No charge on service failure. Ed25519-signed. $0.10 USDC per call via x402 on Base. Free trial: 3 calls per wallet with heade

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
145 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:14:34.354Z (2h ago)
Category
finance-crypto

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