{"service":"z2v-x402-seller","payTo":"0x758b143525f2c60f5ff052061CfD74bA1394EA07","network":"base","chainId":8453,"asset":"USDC","endpoints":[{"method":"GET","path":"/price","price":"$0.005","description":"Live crypto prices by CoinGecko id (?ids=bitcoin,ethereum&vs=usd)."},{"method":"GET","path":"/fx","price":"$0.005","description":"Live FX rates (?base=USD&quote=EUR,GBP,JPY) via keyless Frankfurter/ECB."},{"method":"GET","path":"/weather","price":"$0.005","description":"Current weather by coordinates (?lat=52.52&lon=13.41) via keyless Open-Meteo."},{"method":"GET","path":"/gas","price":"$0.005","description":"Live Base-mainnet gas price (eth_gasPrice, no params) via keyless public Base RPC."},{"method":"GET","path":"/evm-checksum","price":"$0.005","description":"EIP-55 checksum + validity for an EVM address (deterministic, no upstream)."},{"method":"GET","path":"/vol","price":"$0.005","description":"Server-computed crypto risk metrics (?asset=bitcoin&window=7|30|90): annualized realized vol + max drawdown + cumulative return."}],"free":[{"method":"GET","path":"/vol-sample","price":"$0","description":"FREE preview of the paid /vol tool: annualized realized volatility for bitcoin over a fixed 7-day window, computed server-side from the free keyless CoinGecko daily series — no payment, no key, no params. Taste the derivation, then buy the full one: GET /vol ($0.005, x402 exact on Base) adds max drawdown and cumulative return for any CoinGecko asset over a 7|30|90-day window."}]}