{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":474,"cluster_id":4740004040,"lat":21.195,"lng":74.775},"signals":[{"signal":"temperature","resolved_at":"2026-08-08T17:36:14Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":474,"cluster_id":4740004040,"value":{"temperature_c_idw":24.4607},"valid_time":{"kind":"valid_time","requested":"2026-08-08T17:36:14Z","served_window_start_utc":"2026-08-08T17:16:40+00:00","served_window_end_utc":"2026-08-08T18:16:40+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":1545,"pin_sha256":"d6b61aefc77ba326a365895704cb2138cfab5b2aaa2fa0688384b2f6024c3da6","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T18:16:40+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":"2026-08-08T17:36:14Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":474,"cluster_id":4740004040,"value":{"rainfall_mm_24h_idw":0.3816},"valid_time":{"kind":"valid_time","requested":"2026-08-08T17:36:14Z","served_window_start_utc":"2026-08-08T17:16:40+00:00","served_window_end_utc":"2026-08-08T18:16:40+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":1545,"pin_sha256":"d6b61aefc77ba326a365895704cb2138cfab5b2aaa2fa0688384b2f6024c3da6","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T18:16:40+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":"2026-08-08T12:36:14Z","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` 2026-08-08T12:36:14Z is after the latest witnessed instant (2026-08-06T01:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-08T17:36:14Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":474,"cluster_id":4740004040,"value":{"aqi_pm2_5_idw":null,"aqi_pm10_idw":null,"aqi_no2_idw":4,"aqi_so2_idw":null,"aqi_co_idw":7.134,"aqi_ozone_idw":22.4424},"valid_time":{"kind":"valid_time","requested":"2026-08-08T17:36:14Z","served_window_start_utc":"2026-08-08T17:00:52+00:00","served_window_end_utc":"2026-08-08T18:00:52+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":0,"aqi_no2_n_stations":1,"aqi_so2_n_stations":0,"aqi_co_n_stations":2,"aqi_ozone_n_stations":2},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":966,"pin_sha256":"c70c4ae222e51fc680be283bf1bfb698e75ef80115af9d417f65b9612131372b","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T18:00:52+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":"2026-08-08T20:06:14Z","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":474,"cluster_id":4740004040,"value":{"temperature_c_idw":24.2427,"rainfall_mm_24h_idw":1.5739,"humidity_pct_idw":87.0509,"wind_speed_kmph_idw":15.4912},"valid_time":{"kind":"valid_time","requested":"2026-08-08T20:06:14Z","served_window_start_utc":"2026-08-08T19:06:38+00:00","served_window_end_utc":"2026-08-08T20:06:38+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1270,"pin_sha256":"8e6cf48d0a828f0a4274a1efac1c53e2143460db1fe283bcbf397870b18d33a4","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T20:06:38+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}}]}