{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":491,"cluster_id":4910003440,"lat":18.595,"lng":73.265},"signals":[{"signal":"temperature","resolved_at":"2026-10-13T19:48:49Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":491,"cluster_id":4910003440,"value":{"temperature_c_idw":26.5353},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:48:49Z","served_window_start_utc":"2026-10-13T19:16:41+00:00","served_window_end_utc":"2026-10-13T20:16:41+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":3112,"pin_sha256":"3350d86b8754b69714b32296d9c72758cd15387c4868f7eb3dc5c2afbc843de7","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T20:16:41+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":"2026-10-13T19:48:49Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":491,"cluster_id":4910003440,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:48:49Z","served_window_start_utc":"2026-10-13T19:16:41+00:00","served_window_end_utc":"2026-10-13T20:16:41+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":3112,"pin_sha256":"3350d86b8754b69714b32296d9c72758cd15387c4868f7eb3dc5c2afbc843de7","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T20:16:41+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":"2026-10-13T14:48:49Z","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` 2026-10-13T14:48:49Z is after the latest witnessed instant (2026-09-12T03:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-10-13T22:18:49Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":491,"cluster_id":4910003440,"value":{"aqi_pm2_5_idw":86.049,"aqi_pm10_idw":74.6382,"aqi_no2_idw":50.4863,"aqi_so2_idw":4.49,"aqi_co_idw":35.999,"aqi_ozone_idw":14.3432},"valid_time":{"kind":"valid_time","requested":"2026-10-13T22:18:49Z","served_window_start_utc":"2026-10-13T22:00:52+00:00","served_window_end_utc":"2026-10-13T23:00:52+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":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":1906,"pin_sha256":"5285b91f2595335aa24b8a63b59088512b8c1c9ace6c3dc4e99b9767afad0c56","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T23:00:52+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":"2026-10-13T19:48:49Z","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":491,"cluster_id":4910003440,"value":{"temperature_c_idw":25.4389,"rainfall_mm_24h_idw":0,"humidity_pct_idw":65.9847,"wind_speed_kmph_idw":5.8974},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:48:49Z","served_window_start_utc":"2026-10-13T19:06:34+00:00","served_window_end_utc":"2026-10-13T20:06:34+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":2854,"pin_sha256":"a14facefd935cd1816b8f32ba6729586c3ce1f5c0af76c6df725f0431f5fa9a6","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T20:06:34+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}}]}