{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":488,"cluster_id":4880002295,"lat":18.005,"lng":76.215},"signals":[{"signal":"temperature","resolved_at":"2026-08-30T11:28:49Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":488,"cluster_id":4880002295,"value":{"temperature_c_idw":28.533},"valid_time":{"kind":"valid_time","requested":"2026-08-30T11:28:49Z","served_window_start_utc":"2026-08-30T11:16:46+00:00","served_window_end_utc":"2026-08-30T12:16:46+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":2064,"pin_sha256":"38072871b8d68d9de1a9f13096a980e74a6972e73f320bd21678a473d8178325","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-30T12:16:46+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":"2026-08-30T11:28:49Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":488,"cluster_id":4880002295,"value":{"rainfall_mm_24h_idw":0.7613},"valid_time":{"kind":"valid_time","requested":"2026-08-30T11:28:49Z","served_window_start_utc":"2026-08-30T11:16:46+00:00","served_window_end_utc":"2026-08-30T12:16:46+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":2064,"pin_sha256":"38072871b8d68d9de1a9f13096a980e74a6972e73f320bd21678a473d8178325","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-30T12:16:46+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":"2026-08-30T11:28:49Z","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` 2026-08-30T11:28:49Z is after the latest witnessed instant (2026-08-30T00:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-30T11:28:49Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":488,"cluster_id":4880002295,"value":{"aqi_pm2_5_idw":21.843,"aqi_pm10_idw":null,"aqi_no2_idw":8.1901,"aqi_so2_idw":5.0575,"aqi_co_idw":10.2366,"aqi_ozone_idw":16.4316},"valid_time":{"kind":"valid_time","requested":"2026-08-30T11:28:49Z","served_window_start_utc":"2026-08-30T11:00:53+00:00","served_window_end_utc":"2026-08-30T12:00:53+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":2,"aqi_pm10_n_stations":0,"aqi_no2_n_stations":3,"aqi_so2_n_stations":3,"aqi_co_n_stations":2,"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":1350,"pin_sha256":"f5f1c4e7cf5205cc378d883e50d7f19c2178ba70d253fc1dd97060ad74111e1b","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-30T12:00:53+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":"2026-08-30T11:28:49Z","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":488,"cluster_id":4880002295,"value":{"temperature_c_idw":28.6052,"rainfall_mm_24h_idw":2.8122,"humidity_pct_idw":61.702,"wind_speed_kmph_idw":12.1608},"valid_time":{"kind":"valid_time","requested":"2026-08-30T11:28:49Z","served_window_start_utc":"2026-08-30T11:06:50+00:00","served_window_end_utc":"2026-08-30T12:06:50+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":1790,"pin_sha256":"c1a3df2f3f8f17a8b93b0f48be21b81a2da81dbbde5b7dae43567bf258de748d","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-30T12:06:50+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}}]}