the402 endpoint detail

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api.hergertsynthora.com v1 funding-spread

https://api.hergertsynthora.com/v1/funding-spread

answers 402

SYNTHORA funding-spread: perp funding rates CROSSED across Binance, Bybit and OKX for top pairs — the max spread between venues and the theoretical carry direction (long where you receive, short where you pay). Funding arb signal, not a wrapper. 3 free public sources crossed. $0.03 USDC x402 Base.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.03
Network
base
Pay to
0xEf879BFD6C4AccB8F795136de90246e1EC245e06
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
181 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:18:45.566Z (2h ago)
Category
other

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