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Seoul Weather API — Forecast
x402
Seoul Weather API — Forecast is a paid API for AI agents from seoul-weather-402.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Returns real-time and forecast weather data for Seoul, South Korea, sourced from the Korea Meteorological Administration (KMA)
Price / call$0.01
Success—
StatusUnknown
How this service works
Seoul 3-day forecast — temperature, sky, rain chance every 3 hours
Output
A JSON object containing an array of forecast periods for Seoul, each with a date, sky condition description (e.g. 'Mostly Cloudy'), temperature in Celsius, and precipitation chance percentage. Also includes a location label ('Seoul, South Korea').
Example use cases
Example prompt
“What's the weather forecast for Seoul this week — I want to know the sky conditions, temperature, and chance of rain for each day?”
Technical details
Endpoint
GEThttps://seoul-weather-402.fly.dev/weather/seoul/forecast?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need weather forecast data for Seoul, South Korea, especially when you want data sourced from the official Korea Meteorological Administration. Ideal for travel planning apps, tourism services, or agents helping users prepare for a visit to Seoul. Prefer this over generic global weather APIs when Seoul-specific KMA data authority matters.
Side effects
- Payment failure: x402 payment not processed, returns 402 Payment Required
- KMA data unavailable: upstream Korea Meteorological Administration outage returns error
- Rate limiting or network timeout from the fly.dev host
- Malformed response if KMA data format changes unexpectedly
Input
{
"properties": "temperature,humidity,windSpeed,precipitation"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
{
"ok": true,
"data": {
"basedOn": "2026-06-12T02:00:00.000Z",
"periods": [
{
"sky": "Clear",
"date": "2026-06-12",
"localTime": "12:00 KST",
"windSpeed": "2.2 m/s",
"temperature": {
"celsius": 26,
"fahrenheit": 79
},
"precipitation": "None",
"precipitationChance": "0%"
},
{
"sky": "Clear",
"date": "2026-06-12",
"localTime": "15:00 KST",
"windSpeed": "3 m/s",
"temperature": {
"celsius": 28,
"fahrenheit": 82
},
"precipitation": "None",
"precipitationChance": "0%"
},
{
"sky": "Clear",
"date": "2026-06-12",
"localTime": "18:00 KST",
"windSpeed": "1.9 m/s",
"temperature": {
"celsius": 25,
"fahrenheit": 77
},
"precipitation": "None",
"precipitationChance": "0%"
},
{
"sky": "Clear",
"date": "2026-06-12",
"localTime": "21:00 KST",
"windSpeed": "0.5 m/s",
"temperature": {
"celsius": 21,
"fahrenheit": 70
},
"precipitation": "None",
"precipitationChance": "0%"
},
{
"sky": "Clear",
"date": "2026-06-12",
"localTime": "03:00 KST",
"windSpeed": "0.6 m/s",
"temperature": {
"celsius": 18,
"fahrenheit": 64
},
"precipitation": "None",
"precipitationChance": "0%"
},
{
"sky": "Cloudy",
"date": "2026-06-12",
"localTime": "06:00 KST",
"windSpeed": "0.8 m/s",
"temperature": {
"celsius": 18,
"fahrenheit": 64
},
"precipitation": "None",
"precipitationChance": "30%"
},
{
"sky": "Cloudy",
"date": "2026-06-13",
"localTime": "09:00 KST",
"windSpeed": "0.7 m/s",
"temperature": {
"celsius": 22,
"fahrenheit": 72
},
"precipitation": "None",
"precipitationChance": "30%"
},
{
"sky": "Clear",
"date": "2026-06-13",
"localTime": "12:00 KST",
"windSpeed": "1.2 m/s",
"temperature": {
"celsius": 27,
"fahrenheit": 81
},
"precipitation": "None",
"precipitationChance": "0%"
}
],
"location": "Seoul, South Korea"
}
}Schema · Response
{
"type": "json",
"example": {
"periods": [
{
"sky": "Mostly Cloudy",
"date": "2026-06-02",
"temperature": {
"celsius": 28
},
"precipitationChance": "20%"
}
],
"location": "Seoul, South Korea"
}
}Tags
x402
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