{"service":"z2v-x402-seller","transport":"POST /mcp (JSON-RPC 2.0; tools/call is x402-paid on POST /mcp/call)","payTo":"0x758b143525f2c60f5ff052061CfD74bA1394EA07","network":"base","chainId":8453,"asset":"USDC","tools":[{"name":"price","price":"$0.005","description":"Live crypto prices by CoinGecko id (ids=bitcoin,ethereum, vs=usd).","inputSchema":{"type":"object","properties":{"ids":{"type":"string","description":"Comma-separated CoinGecko coin ids, e.g. bitcoin,ethereum"},"vs":{"type":"string","description":"Quote currency, e.g. usd (default usd)"}},"required":["ids"]},"outputSchema":{"type":"object","properties":{"ids":{"type":"string"},"vs":{"type":"string"},"prices":{"type":"object","description":"Map of coin id → { <vs>: number }, as CoinGecko returns"}}}},{"name":"fx","price":"$0.005","description":"Live FX rates (base=USD, quote=EUR,GBP,JPY) via keyless Frankfurter/ECB.","inputSchema":{"type":"object","properties":{"base":{"type":"string","description":"ISO-4217 base currency, e.g. USD (default USD)"},"quote":{"type":"string","description":"Comma-separated ISO-4217 quote currencies, e.g. EUR,GBP,JPY (default EUR)"}},"required":[]},"outputSchema":{"type":"object","properties":{"amount":{"type":"number"},"base":{"type":"string"},"date":{"type":"string"},"rates":{"type":"object","description":"Map of quote currency → rate (number)"}}}},{"name":"weather","price":"$0.005","description":"Current weather by coordinates (lat=52.52, lon=13.41) via keyless Open-Meteo.","inputSchema":{"type":"object","properties":{"lat":{"type":"string","description":"Latitude in [-90,90], e.g. 52.52"},"lon":{"type":"string","description":"Longitude in [-180,180], e.g. 13.41"}},"required":["lat","lon"]},"outputSchema":{"type":"object","properties":{"lat":{"type":"number"},"lon":{"type":"number"},"current_weather":{"type":"object","description":"Open-Meteo current_weather block (temperature, windspeed, weathercode, …)"}}}},{"name":"gas","price":"$0.005","description":"Live Base-mainnet gas price (eth_gasPrice, no params) via keyless public Base RPC.","inputSchema":{"type":"object","properties":{},"required":[]},"outputSchema":{"type":"object","properties":{"network":{"type":"string"},"chainId":{"type":"number"},"gas_price_wei":{"type":"string","description":"Current Base-mainnet gas price in wei (decimal string)"},"gas_price_gwei":{"type":"number","description":"Same gas price in gwei"}}}},{"name":"evm-checksum","price":"$0.005","description":"EIP-55 checksum + validity for an EVM address (deterministic, no upstream).","inputSchema":{"type":"object","properties":{"address":{"type":"string","description":"EVM address to checksum, e.g. 0xabc…"}},"required":["address"]},"outputSchema":{"type":"object","properties":{"input":{"type":"string"},"checksum":{"type":"string","description":"EIP-55 checksummed address, or null if invalid"},"valid":{"type":"boolean"}}}},{"name":"vol","price":"$0.005","description":"Server-computed crypto risk metrics (asset=bitcoin, window=7|30|90): annualized realized volatility, max drawdown and cumulative return, derived from the free keyless CoinGecko daily series. Derivation moat: not reconstructable in one free call.","inputSchema":{"type":"object","properties":{"asset":{"type":"string","description":"Single CoinGecko coin id, e.g. bitcoin (one series, no comma)"},"window":{"type":"string","description":"Lookback in days: 7 | 30 | 90 (default 30)"}},"required":["asset"]},"outputSchema":{"type":"object","properties":{"asset":{"type":"string"},"window":{"type":"number"},"annualized_realized_vol":{"type":"number","description":"σ of daily log-returns × √365 (annualized realized volatility)"},"max_drawdown":{"type":"number","description":"Most-negative running peak-to-trough fraction over the window (≤0)"},"cumulative_return":{"type":"number","description":"Last close / first close − 1 over the window"},"samples":{"type":"number","description":"Daily closes used in the derivation"}}}}],"free_tools":[{"name":"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.","inputSchema":{"type":"object","properties":{},"required":[]},"outputSchema":{"type":"object","properties":{"asset":{"type":"string"},"window":{"type":"number"},"annualized_realized_vol":{"type":"number","description":"σ of daily log-returns × √365 (annualized realized volatility)"},"samples":{"type":"number","description":"Daily closes used in the derivation"},"sample":{"type":"boolean","description":"Always true — this is the free preview"},"upgrade":{"type":"string","description":"How to buy the untruncated derivation"}}}}]}