{"id":"69f854d1-d2df-4d7a-a1dc-1fc896d2fd85","shortId":"V8EMXC","kind":"x402","title":"Daily weather forecasts for any city worldwide via x402 micropayment at $0.01 per call.","tagline":"Daily weather forecasts for any city worldwide via x402 micropayment at $0.01 per call.","description":"The Weather Forecast endpoint at weather.hugen.tokyo provides structured JSON weather forecasts for any city worldwide. You can query by city name or by latitude/longitude coordinates, and request between 1 and 7 days of forecast data (defaulting to 3 days). Each forecast day includes condition description, weather code, max/min temperatures in Celsius, precipitation in mm, precipitation probability percentage, and maximum wind speed in km/h.\n\nThe endpoint is gated by the x402 protocol, requiring a micropayment of $0.01 USDC on the Base network per request. No API keys or geocoding setup are needed — just pass a city name or coordinates. The response schema is well-defined via OpenAPI 3.1, returning a ForecastResponse object with city, country, latitude, longitude, and an array of ForecastDay objects.\n\nAlternative access methods are available: an MCP gateway at mcp.hugen.tokyo, an API key system with $0.05 free credit via discovery.hugen.tokyo, and a Python SDK (x402-pay) for one-line access without wallet setup. The API also offers a companion /weather/current endpoint for real-time conditions.","tags":[],"capabilities":["weather-forecast","city-lookup","lat-lon-query","multi-day-forecast","structured-json","x402-payment","micropayment","no-api-key-required"],"categories":["geo","weather"],"synonyms":["weather forecast API","daily forecast","city weather","weather prediction","forecast by coordinates","weather data","multi-day weather","weather micropayment"],"warnings":["Root URL returns 404; no landing page — only /docs and the API endpoints are functional","No dedicated pricing page; price is inferred solely from the x402 challenge payload","Upstream weather data source is not disclosed"],"endpointUrl":"https://weather.hugen.tokyo/weather/forecast","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"feePayer":"BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"},"payTo":"4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z","amount":"5000","scheme":"exact","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","maxTimeoutSeconds":300}]},"qualityScore":"0.820","qualityRationale":"Full OpenAPI 3.1 schema with well-defined request parameters and response models. Live x402 402 challenge confirmed with sample response data. Pricing is clear ($0.01 USDC on Base). Documentation is available via /docs but no dedicated prose docs, examples, or pricing page exist beyond the OpenAPI spec and challenge 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