the402 endpoint detail

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x402-datashop-production.up.railway.app air quality

https://x402-datashop-production.up.railway.app/v1/air/quality

payable

Hourly air-quality data (PM2.5, PM10, ozone, NO2, European/US AQI) for any lat/lon, from the Copernicus CAMS model served by Open-Meteo (CC-BY 4.0), updated hourly. Query: ?latitude=48.8566&longitude=2.3522&hourly=pm2_5,pm10,european_aqi&forecast_days=2 (1..7 days). Returns parallel time/value arrays with units; cached 1h.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0x6ab8efe305cce67daa48c97bde29c04402822dff
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
308 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:12:10.333Z (2d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402-datashop-production.up.railway.app%2Fv1%2Fair%2Fquality"