{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":473,"cluster_id":4730003814,"lat":20.035,"lng":79.625},"signals":[{"signal":"temperature","resolved_at":"2026-08-27T15:26:18Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":473,"cluster_id":4730003814,"value":{"temperature_c_idw":26.7568},"valid_time":{"kind":"valid_time","requested":"2026-08-27T15:26:18Z","served_window_start_utc":"2026-08-27T15:16:46+00:00","served_window_end_utc":"2026-08-27T16:16:46+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":1996,"pin_sha256":"cc704a3bdeed7c28c5250fd0bac2e37ef23d2aaeb112ab4f79c27a1227e59c0b","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T16:16:46+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":"2026-08-27T15:26:18Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":473,"cluster_id":4730003814,"value":{"rainfall_mm_24h_idw":0.902},"valid_time":{"kind":"valid_time","requested":"2026-08-27T15:26:18Z","served_window_start_utc":"2026-08-27T15:16:46+00:00","served_window_end_utc":"2026-08-27T16:16:46+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":1996,"pin_sha256":"cc704a3bdeed7c28c5250fd0bac2e37ef23d2aaeb112ab4f79c27a1227e59c0b","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T16:16:46+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":"2026-08-27T10:26:18Z","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` 2026-08-27T10:26:18Z is after the latest witnessed instant (2026-08-27T01:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-27T17:56:18Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":473,"cluster_id":4730003814,"value":{"aqi_pm2_5_idw":null,"aqi_pm10_idw":55.5567,"aqi_no2_idw":12.4973,"aqi_so2_idw":9.9137,"aqi_co_idw":32.7891,"aqi_ozone_idw":9.6571},"valid_time":{"kind":"valid_time","requested":"2026-08-27T17:56:18Z","served_window_start_utc":"2026-08-27T17:00:52+00:00","served_window_end_utc":"2026-08-27T18:00:52+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":0,"aqi_pm10_n_stations":2,"aqi_no2_n_stations":2,"aqi_so2_n_stations":2,"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":1294,"pin_sha256":"eaf11574b654f70d4f2dfca48093fd2df13d0b6a710c41e7e34d74db1e8b46d8","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T18:00:52+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":"2026-08-27T17:56:18Z","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":473,"cluster_id":4730003814,"value":{"temperature_c_idw":25.9789,"rainfall_mm_24h_idw":4.6503,"humidity_pct_idw":84.222,"wind_speed_kmph_idw":9.2247},"valid_time":{"kind":"valid_time","requested":"2026-08-27T17:56:18Z","served_window_start_utc":"2026-08-27T17:06:48+00:00","served_window_end_utc":"2026-08-27T18:06:48+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":1724,"pin_sha256":"f74613c2f740363c579ecdbc275a2bc27816e9702312c7e71d1c7b58d632c0cc","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T18:06:48+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}}]}