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Japan Meteorological Agency (JMA) Weather Forecast by Prefecture
x402
Japan Meteorological Agency (JMA) Weather Forecast by Prefecture is a paid API for AI agents from jp-data-api-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns a 3-day official JMA text weather forecast (weather, wind, waves) for a Japanese prefecture identified by area code
Price / call$0.005
Success—
StatusUnknown
How this service works
Japan weather forecast from JMA (Japan Meteorological Agency, official source) by prefecture area code: 3-day text forecast with weather, wind, waves. Use for travel planning in Japan, logistics, event scheduling, daily briefings. Default Tokyo (130000); Osaka 270000, Hokkaido 016000, Fukuoka 400000, Okinawa 471000.
Output
A 3-day text-based weather forecast for the requested Japanese prefecture, sourced from the Japan Meteorological Agency. Includes weather description, wind conditions, and wave information for each forecast period.
Example use cases
Example prompt
“Can you get me the official Japan Meteorological Agency 3-day weather forecast for Osaka (area code 270000), including wind and wave conditions?”
Technical details
Endpoint
GEThttps://jp-data-api-production.up.railway.app/weather/forecastWhen to prefer
Use this endpoint when you need official, authoritative Japanese weather forecasts sourced directly from the Japan Meteorological Agency, particularly for travel planning, logistics, event scheduling, or daily briefings in Japan. Prefer this over generic weather APIs when accuracy and official sourcing for Japanese prefectures is required, especially when wave and wind data specific to JMA regions is needed.
Side effects
- Invalid or unsupported JMA area code returns an error or empty result
- Network/service downtime on Railway hosting causes 5xx errors
- Payment not completed via x402 protocol returns HTTP 402
- JMA upstream data unavailable or delayed causes stale or missing forecast
- Missing 'area' parameter defaults to Tokyo (130000) — may return unexpected region data if caller intended a different area
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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