{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":471,"cluster_id":4710001398,"lat":21.025,"lng":79.665},"signals":[{"signal":"temperature","resolved_at":"2026-08-17T14:00:26Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":471,"cluster_id":4710001398,"value":{"temperature_c_idw":28.382},"valid_time":{"kind":"valid_time","requested":"2026-08-17T14:00:26Z","served_window_start_utc":"2026-08-17T13:16:38+00:00","served_window_end_utc":"2026-08-17T14:16:38+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"imd_idw_station","support_m":null,"detail":{"temperature_c_n_stations":3},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_o_v2","pin_seq":1757,"pin_sha256":"ffa3d095edeba1dd022199197fd6ad14579438760d37fde5fda710b2135b0677","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-17T14:16:38+00:00","support_kind":"imd_idw_station","scope":"mh36","note":"value is the witness observed in the pin whose natural window contains the requested instant; outside the observed window read_at refuses (R7) — it never interpolates and never replays a transaction-time cube."},"error":null}},{"signal":"rainfall_imd","resolved_at":"2026-08-17T14:00:26Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":471,"cluster_id":4710001398,"value":{"rainfall_mm_24h_idw":0.8945},"valid_time":{"kind":"valid_time","requested":"2026-08-17T14:00:26Z","served_window_start_utc":"2026-08-17T13:16:38+00:00","served_window_end_utc":"2026-08-17T14:16:38+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"imd_idw_station","support_m":null,"detail":{"rainfall_mm_24h_n_stations":3},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_o_v2","pin_seq":1757,"pin_sha256":"ffa3d095edeba1dd022199197fd6ad14579438760d37fde5fda710b2135b0677","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-17T14:16:38+00:00","support_kind":"imd_idw_station","scope":"mh36","note":"value is the witness observed in the pin whose natural window contains the requested instant; outside the observed window read_at refuses (R7) — it never interpolates and never replays a transaction-time cube."},"error":null}},{"signal":"rainfall","resolved_at":"2026-08-17T14:00:26Z","envelope":{"ok":false,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":null,"coverage":null,"error":{"code":"after_observed_window","message":"`at` 2026-08-17T14:00:26Z is after the latest witnessed instant (2026-08-16T15:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-17T14:00:26Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":471,"cluster_id":4710001398,"value":{"aqi_pm2_5_idw":44,"aqi_pm10_idw":82.8834,"aqi_no2_idw":9.4893,"aqi_so2_idw":9.707,"aqi_co_idw":27.0493,"aqi_ozone_idw":11.8267},"valid_time":{"kind":"valid_time","requested":"2026-08-17T14:00:26Z","served_window_start_utc":"2026-08-17T13:00:53+00:00","served_window_end_utc":"2026-08-17T14:00:53+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"cpcb_idw_district","support_m":null,"detail":{"aqi_pm2_5_n_stations":1,"aqi_pm10_n_stations":2,"aqi_no2_n_stations":3,"aqi_so2_n_stations":3,"aqi_co_n_stations":3,"aqi_ozone_n_stations":3},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":1128,"pin_sha256":"137872b0690ba37bab62bb140cd4ca552293a4e4cf95fa8792ccc61fe8357e18","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-17T14:00:53+00:00","support_kind":"cpcb_idw_district","scope":"mh36","note":"value is the witness observed in the pin whose natural window contains the requested instant; outside the observed window read_at refuses (R7) — it never interpolates and never replays a transaction-time cube."},"error":null}},{"signal":"weather_google","resolved_at":"2026-08-17T14:00:26Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"weather_google","unit":"google_weather_mixed","admin_code":471,"cluster_id":4710001398,"value":{"temperature_c_idw":26.7886,"rainfall_mm_24h_idw":8.2164,"humidity_pct_idw":86.1384,"wind_speed_kmph_idw":10.4879},"valid_time":{"kind":"valid_time","requested":"2026-08-17T14:00:26Z","served_window_start_utc":"2026-08-17T13:06:49+00:00","served_window_end_utc":"2026-08-17T14:06:49+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"google_weather_idw_station","support_m":null,"detail":{"temperature_c_n_stations":3,"rainfall_mm_24h_n_stations":3,"humidity_pct_n_stations":3,"wind_speed_kmph_n_stations":3},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_o_google_v1","pin_seq":1480,"pin_sha256":"0a1d807f5d4d76e1239aa33b8d3275614f12eb4496bfaa7fa8264a00de5fa2dd","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-17T14:06:49+00:00","support_kind":"google_weather_idw_station","scope":"mh36","note":"value is the witness observed in the pin whose natural window contains the requested instant; outside the observed window read_at refuses (R7) — it never interpolates and never replays a transaction-time cube."},"error":null}}]}