the402 endpoint detail

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bykaranteli.com x402 options-oi-history

https://bykaranteli.com/api/x402/options-oi-history

answers 402

Daily listed options open interest per instrument: strike, expiry, option type, open interest, mark implied volatility, underlying price and traded notional. History from 2026-08-06 (rolling window; rows before that date do not exist).

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x0db4c96d8b14f431f3bb8ce1a33f07d2c696a62c
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
481 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:14:17.212Z (23d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fbykaranteli.com%2Fapi%2Fx402%2Foptions-oi-history"