FRESH OBSERVED ENDPOINT EVIDENCE · DATASET REVISION 317572

Full options chain for a currency & expiry: per-strike calls & puts with mark price, implied volatility, and open interest. Send { currency, expiry? }. The complete options board for BTC/ETH/SOL.

Endpoint
https://x402-services-production.up.railway.app/api/options/chain

Category crypto_onchain

Capabilities Market quote · Derivatives open interest

Routable now yes

Observed price $0.005

Craft score 85.9

Last probe 2026-07-29T01:36:23.211Z