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markt.halowerk.com options
https://markt.halowerk.com/options
answers 402
Reads the public option book summaries of Deribit and aggregates them per expiry. iv_atm is the mark implied volatility of the strike closest to the forward, averaged over call and put, and the strike used is named. term_structure lists iv_atm against days to expiry. put_call_ratio is reported twice and never mixed: once by 24h volume and once by open interest. open_interest_by_strike and key_stri
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.008
- Network
- base
- Pay to
- 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 549 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:36:11.449Z (9h ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fmarkt.halowerk.com%2Foptions"