{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":472,"cluster_id":4720002129,"lat":20.225,"lng":76.395},"signals":[{"signal":"temperature","resolved_at":"2026-08-24T11:34:55Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":472,"cluster_id":4720002129,"value":{"temperature_c_idw":31.9807},"valid_time":{"kind":"valid_time","requested":"2026-08-24T11:34:55Z","served_window_start_utc":"2026-08-24T11:16:53+00:00","served_window_end_utc":"2026-08-24T12:16:53+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1920,"pin_sha256":"6dc8dce9a74b64d75fa42a921dbc95249f0b52b75c3d0e28e38c9013ebc06a32","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-24T12:16:53+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":"2026-08-24T11:34:55Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":472,"cluster_id":4720002129,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-08-24T11:34:55Z","served_window_start_utc":"2026-08-24T11:16:53+00:00","served_window_end_utc":"2026-08-24T12:16:53+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1920,"pin_sha256":"6dc8dce9a74b64d75fa42a921dbc95249f0b52b75c3d0e28e38c9013ebc06a32","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-24T12:16:53+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":"2026-08-24T06:34:55Z","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` 2026-08-24T06:34:55Z is after the latest witnessed instant (2026-08-23T18:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-24T06:34:55Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":472,"cluster_id":4720002129,"value":{"aqi_pm2_5_idw":35.4108,"aqi_pm10_idw":43,"aqi_no2_idw":11.1465,"aqi_so2_idw":6.754,"aqi_co_idw":24.7629,"aqi_ozone_idw":17.9744},"valid_time":{"kind":"valid_time","requested":"2026-08-24T06:34:55Z","served_window_start_utc":"2026-08-24T06:00:53+00:00","served_window_end_utc":"2026-08-24T07:00:53+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":3,"aqi_no2_n_stations":4,"aqi_so2_n_stations":4,"aqi_co_n_stations":3,"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":1256,"pin_sha256":"f66069304b3c5c8a00f7126fc33e9fd88ae62b9ae8b13174d0b56ccea5bbdd57","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-24T07:00:53+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":"2026-08-24T14:04:55Z","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":472,"cluster_id":4720002129,"value":{"temperature_c_idw":28.2355,"rainfall_mm_24h_idw":2.0638,"humidity_pct_idw":72.2144,"wind_speed_kmph_idw":9.5661},"valid_time":{"kind":"valid_time","requested":"2026-08-24T14:04:55Z","served_window_start_utc":"2026-08-24T13:06:49+00:00","served_window_end_utc":"2026-08-24T14:06:49+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":1648,"pin_sha256":"6d253e2e04f24272a5772c934edf61e56c35feb5862adac74beae96ae7f494e3","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-24T14:06:49+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}}]}