{"slug":"kronos-crypto-data-forecasts-6335b1ff","name":"Kronos Crypto Data & Forecasts","summary":"Implied volatility surface for BTC and ETH from Deribit options (public API, no auth). Returns ATM IV (annualized %), IV rank and IV percentile from Kronos iv_history (daily cron), term structure (weekly/1m/3m ATM IV + contango/backwardation/flat shape label), 25-delta risk reversal (BS-approximated strikes), 10-delta wing IVs, max-pain strike across top-5 expiries, and a vol-regime label. Falls back to OKX if Deribit is unreachable. $0.03 USDC via x402.","status":"live","indexable":true,"listed_since":"2026-10-25T17:50:27.818765Z","sources":[{"source":"x402_bazaar","external_id":"https://kronossignals.com/api/v1/options-iv/btc","owner_address":"0x36038e1d712c5e39f35952164ec58ec2b96caee7","seen_at":"2026-10-26T05:59:17.439336Z","removed_at":null}],"endpoints":[{"url":"https://kronossignals.com/api/v1/options-iv/btc","host":"kronossignals.com","protocol":"x402","state":"live","last_probe_at":"2026-10-25T20:11:14.890601Z","last_ok_at":"2026-10-25T20:11:14.890601Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"kronossignals-com-bbd0d56e","name":"kronossignals.com"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":2,"last_paid_at":"2026-10-18T12:01:41.702Z","reported_at":"2026-10-26T05:59:17.439336Z"},"notice":"Not affiliated with addrbook — claim or request removal."}