{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":497,"cluster_id":4970000379,"lat":19.165,"lng":73.495},"signals":[{"signal":"temperature","resolved_at":"2026-07-29T20:04:15Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":497,"cluster_id":4970000379,"value":{"temperature_c_idw":26.5281},"valid_time":{"kind":"valid_time","requested":"2026-07-29T20:04:15Z","served_window_start_utc":"2026-07-29T19:16:41+00:00","served_window_end_utc":"2026-07-29T20:16:41+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":1307,"pin_sha256":"bfd40c7e9f6cb180164c89f74de8e3745900aeddf9158e945b09e06f85897562","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-29T20:16:41+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":"2026-07-29T20:04:15Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":497,"cluster_id":4970000379,"value":{"rainfall_mm_24h_idw":0.5728},"valid_time":{"kind":"valid_time","requested":"2026-07-29T20:04:15Z","served_window_start_utc":"2026-07-29T19:16:41+00:00","served_window_end_utc":"2026-07-29T20:16:41+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":1307,"pin_sha256":"bfd40c7e9f6cb180164c89f74de8e3745900aeddf9158e945b09e06f85897562","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-29T20:16:41+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":"2026-07-29T20:04:15Z","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` 2026-07-29T20:04:15Z is after the latest witnessed instant (2026-07-27T07:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-07-29T20:04:15Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":497,"cluster_id":4970000379,"value":{"aqi_pm2_5_idw":24.2232,"aqi_pm10_idw":36.0897,"aqi_no2_idw":15.711,"aqi_so2_idw":13.8765,"aqi_co_idw":30.3552,"aqi_ozone_idw":12.2642},"valid_time":{"kind":"valid_time","requested":"2026-07-29T20:04:15Z","served_window_start_utc":"2026-07-29T20:00:53+00:00","served_window_end_utc":"2026-07-29T21:00:53+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":4,"aqi_pm10_n_stations":4,"aqi_no2_n_stations":4,"aqi_so2_n_stations":4,"aqi_co_n_stations":4,"aqi_ozone_n_stations":4},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":794,"pin_sha256":"1ca8a78d4ed002805a59603afcd56407efba6cc1c30687daeaa341e906bc9e18","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-29T21:00:53+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":"2026-07-29T20:04:15Z","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":497,"cluster_id":4970000379,"value":{"temperature_c_idw":25.9101,"rainfall_mm_24h_idw":6.5431,"humidity_pct_idw":89.1527,"wind_speed_kmph_idw":20.5145},"valid_time":{"kind":"valid_time","requested":"2026-07-29T20:04:15Z","served_window_start_utc":"2026-07-29T19:06:44+00:00","served_window_end_utc":"2026-07-29T20:06:44+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":1030,"pin_sha256":"f1c164dc836badf5696665b133bfde6933ec10c255c752496fccadc04d126032","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-29T20:06:44+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}}]}