{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":489,"cluster_id":4890002476,"lat":19.225,"lng":76.455},"signals":[{"signal":"temperature","resolved_at":"2026-08-06T23:39:50Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":489,"cluster_id":4890002476,"value":{"temperature_c_idw":23.6553},"valid_time":{"kind":"valid_time","requested":"2026-08-06T23:39:50Z","served_window_start_utc":"2026-08-06T23:24:22+00:00","served_window_end_utc":"2026-08-07T00:24:22+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":1503,"pin_sha256":"2dc073ba9f863f654297c20a51ec008c1655d54e7261eda1211f8b70f40c2390","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-07T00:24:22+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":"2026-08-06T23:39:50Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":489,"cluster_id":4890002476,"value":{"rainfall_mm_24h_idw":2.4448},"valid_time":{"kind":"valid_time","requested":"2026-08-06T23:39:50Z","served_window_start_utc":"2026-08-06T23:24:22+00:00","served_window_end_utc":"2026-08-07T00:24:22+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":1503,"pin_sha256":"2dc073ba9f863f654297c20a51ec008c1655d54e7261eda1211f8b70f40c2390","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-07T00:24:22+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":"2026-08-06T18:39:53Z","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` 2026-08-06T18:39:53Z is after the latest witnessed instant (2026-08-04T04:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-06T18:39:53Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":489,"cluster_id":4890002476,"value":{"aqi_pm2_5_idw":29.0287,"aqi_pm10_idw":39.2421,"aqi_no2_idw":13.8044,"aqi_so2_idw":6.5177,"aqi_co_idw":22.98,"aqi_ozone_idw":33.6895},"valid_time":{"kind":"valid_time","requested":"2026-08-06T18:39:53Z","served_window_start_utc":"2026-08-06T18:00:53+00:00","served_window_end_utc":"2026-08-06T19:00:53+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":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":930,"pin_sha256":"0fd91b2398cb2056aebfec7054b26c5f3f6925e4912b8a759c7dc8fbe7d303ae","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-06T19:00:53+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":"2026-08-06T23:39:50Z","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":489,"cluster_id":4890002476,"value":{"temperature_c_idw":24.5528,"rainfall_mm_24h_idw":7.3835,"humidity_pct_idw":87.5578,"wind_speed_kmph_idw":14.8843},"valid_time":{"kind":"valid_time","requested":"2026-08-06T23:39:50Z","served_window_start_utc":"2026-08-06T23:06:47+00:00","served_window_end_utc":"2026-08-07T00:06:47+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":1226,"pin_sha256":"364ac9b23e708e2790e81efa8f639035c44219d81d429648d39ef02628cfe54f","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-07T00:06:47+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}}]}