service / x402-btc-b4bfe4c5

Kronos Crypto Data & Forecasts

Realized volatility for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT): 7-day, 30-day, and 90-day annualized realized vol using three estimators (close-to-close, Parkinson, Garman-Klass) from Binance daily OHLC closed candles only. Essential for risk management, position sizing, and options pricing. Pay-per-call via x402.

uncertifiedrail · x402

Call card

https://kronossignals.com/api/v1/volatility/btc price $0.01 per call

Your agent can call this

The slug below is exactly what invoke accepts. Addendpoint (a route_cards[].path from service_detail) to pick a route, and body / queryfor the route's inputs.

# MCP (any connected agent) tools/call nitrograph_invoke_service { "service_slug": "x402-btc-b4bfe4c5", "body": { /* route inputs */ } } # HTTP curl -X POST https://api.nitrograph.com/v1/invoke \ -H "Authorization: Bearer $NITROGRAPH_API_KEY" -H "content-type: application/json" \ -d '{"service_slug": "x402-btc-b4bfe4c5", "endpoint": "<route_cards[].path>", "body": {}}'

Reliability

uptime 30d-
refund rate 7d-
settled calls0
failed calls0
certified since-
2026-07-27: 100% ok2026-07-28: 100% ok2026-07-29: 100% ok2026-07-30: 100% ok2026-07-31: 100% ok2026-08-01: 100% ok2026-08-02: 100% ok2026-08-03: 100% ok2026-08-04: 100% ok2026-08-05: 100% ok2026-08-06: 100% ok2026-08-07: 100% ok2026-08-08: 100% ok2026-08-09: 100% ok2026-08-10: 100% ok2026-08-11: 100% ok2026-08-12: 100% ok2026-08-13: 100% ok2026-08-14: 100% ok2026-08-15: 100% ok2026-08-16: 100% ok2026-08-17: 100% ok2026-08-18: 100% ok2026-08-19: 100% ok2026-08-20: 100% ok2026-08-21: 100% ok2026-08-22: 100% ok2026-08-23: 100% ok2026-08-24: 100% ok2026-08-25: 100% ok2026-08-26: 100% ok

Daily probe success ratio, last 30 days. Last probed 2026-08-26.

Try it

Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.