{"sources": {"cams_open_meteo": {"configured": true, "name": "Copernicus CAMS via Open-Meteo", "coverage": "global", "requires": "no auth required"}, "airnow": {"configured": false, "name": "EPA AirNow (TEMPO + ground monitors fused)", "coverage": "north_america", "requires": "AIRNOW_API_KEY"}, "nasa_tempo_direct": {"configured": false, "name": "NASA TEMPO direct via Harmony API", "coverage": "north_america", "requires": "EDL_TOKEN (NASA Earthdata Login)"}, "sentinel5p_direct": {"configured": false, "name": "ESA Sentinel-5P direct via CDSE Statistical API", "coverage": "global", "requires": "CDSE_CLIENT_ID + CDSE_CLIENT_SECRET"}}, "configured_count": 1, "total_count": 4, "health": "healthy"}