cryptyx.ai api iv-surface

https://cryptyx.ai/api/iv-surface

answers 402

Latest-day Deribit IV term structure for one asset — per-tenor ATM IV, 25-delta risk reversal, butterfly, plus current put/call OI ratio. BTC and ETH only. Feeds the OPT factor class; use for skew reads and vol-term structuring.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.

Price: $0.05
Network: base
Pay to: 0x0cD2c9724F185a029101b4AEACf3F114415c394f
Spec dialect: v2 (declares x402Version 2)
Transport: PAYMENT-REQUIRED header
HTTP method: GET
Response latency: 119 ms
Payment options: 1 usable of 1
Last checked: 2026-08-15T14:23:16.702Z (1h ago)
Category: ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fcryptyx.ai%2Fapi%2Fiv-surface"