{"name":"AQI Monitor API","version":"2.0.0","status":"running","endpoints":{"health":"/health","metrics":"/api/metrics","nearbyAQI":"/api/aqi/nearby?lat=LAT&lon=LON","countries":"/api/aqi/countries","states":"/api/aqi/states?country=COUNTRY","cities":"/api/aqi/cities?state=STATE&country=COUNTRY","sources":"/api/aqi/sources","history":"/api/history/location?lat=LAT&lon=LON&days=7","stats":"/api/history/stats?lat=LAT&lon=LON&days=30","analytics":"/api/analytics/overview","cityPages":"/{city}-aqi (e.g., /bangkok-aqi)"},"dataSources":{"iqair":"Professional monitoring stations","purpleair":"Community sensors"},"rateLimit":{"general":"100 requests per 15 minutes","api":"20 requests per minute"}}