{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":487,"cluster_id":4870000654,"lat":19.755,"lng":73.885},"signals":[{"signal":"temperature","resolved_at":"2026-08-27T18:56:08Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":487,"cluster_id":4870000654,"value":{"temperature_c_idw":23.7296},"valid_time":{"kind":"valid_time","requested":"2026-08-27T18:56:08Z","served_window_start_utc":"2026-08-27T18:16:46+00:00","served_window_end_utc":"2026-08-27T19:16:46+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":1999,"pin_sha256":"55c0e8f4fcb46818004bfdc6f896fc3cefff48b8bf2efe7f902a6b6fb68fbcf1","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T19:16:46+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":"2026-08-27T18:56:08Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":487,"cluster_id":4870000654,"value":{"rainfall_mm_24h_idw":2},"valid_time":{"kind":"valid_time","requested":"2026-08-27T18:56:08Z","served_window_start_utc":"2026-08-27T18:16:46+00:00","served_window_end_utc":"2026-08-27T19:16:46+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":1999,"pin_sha256":"55c0e8f4fcb46818004bfdc6f896fc3cefff48b8bf2efe7f902a6b6fb68fbcf1","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T19:16:46+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":"2026-08-27T13:56:08Z","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` 2026-08-27T13:56:08Z is after the latest witnessed instant (2026-08-27T05:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-27T21:26:08Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":487,"cluster_id":4870000654,"value":{"aqi_pm2_5_idw":33.0158,"aqi_pm10_idw":46.873,"aqi_no2_idw":4.7293,"aqi_so2_idw":7.3105,"aqi_co_idw":24.3652,"aqi_ozone_idw":12.7353},"valid_time":{"kind":"valid_time","requested":"2026-08-27T21:26:08Z","served_window_start_utc":"2026-08-27T21:00:53+00:00","served_window_end_utc":"2026-08-27T22:00:53+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":1298,"pin_sha256":"c69a99de4e33eea8a18d656e04a3438039e5fd719ce42a8630822765beadb789","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T22:00:53+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":"2026-08-27T18:56:08Z","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":487,"cluster_id":4870000654,"value":{"temperature_c_idw":23.5327,"rainfall_mm_24h_idw":1.827,"humidity_pct_idw":88.9239,"wind_speed_kmph_idw":15.9079},"valid_time":{"kind":"valid_time","requested":"2026-08-27T18:56:08Z","served_window_start_utc":"2026-08-27T18:06:45+00:00","served_window_end_utc":"2026-08-27T19:06:45+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":1725,"pin_sha256":"0609ed4f463959ed4759d9111ce837b575b6d63bca34ea8a65fc59da67384620","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T19:06:45+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}}]}