{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":480,"cluster_id":4800000701,"lat":15.995,"lng":74.385},"signals":[{"signal":"temperature","resolved_at":"2026-10-13T19:06:23Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":480,"cluster_id":4800000701,"value":{"temperature_c_idw":28},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:06:23Z","served_window_start_utc":"2026-10-13T18:16:38+00:00","served_window_end_utc":"2026-10-13T19:16:38+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":3111,"pin_sha256":"7994f68662bfd68f916684cd0faf15ef667324e7478a35ea9b2604c61258d0e6","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T19:16:38+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":"2026-10-13T19:06:23Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":480,"cluster_id":4800000701,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:06:23Z","served_window_start_utc":"2026-10-13T18:16:38+00:00","served_window_end_utc":"2026-10-13T19:16:38+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":3111,"pin_sha256":"7994f68662bfd68f916684cd0faf15ef667324e7478a35ea9b2604c61258d0e6","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T19:16:38+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":"2026-10-13T19:06:23Z","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` 2026-10-13T19:06:23Z 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":"2026-10-13T19:06:23Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":480,"cluster_id":4800000701,"value":{"aqi_pm2_5_idw":48.4572,"aqi_pm10_idw":76.0931,"aqi_no2_idw":17.1758,"aqi_so2_idw":9,"aqi_co_idw":45.2596,"aqi_ozone_idw":27.3603},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:06:23Z","served_window_start_utc":"2026-10-13T19:00:53+00:00","served_window_end_utc":"2026-10-13T20:00:53+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":2,"aqi_no2_n_stations":2,"aqi_so2_n_stations":1,"aqi_co_n_stations":3,"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":1903,"pin_sha256":"89ff3cc4d8ca7e9c32892af06820e30264ff6fe5dd66dddc36d346a99e1547dc","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T20:00:53+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":"2026-10-13T19:06:23Z","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":480,"cluster_id":4800000701,"value":{"temperature_c_idw":23.5709,"rainfall_mm_24h_idw":0,"humidity_pct_idw":64.0051,"wind_speed_kmph_idw":7.9892},"valid_time":{"kind":"valid_time","requested":"2026-10-13T19:06:23Z","served_window_start_utc":"2026-10-13T18:06:39+00:00","served_window_end_utc":"2026-10-13T19:06:39+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":2853,"pin_sha256":"de8d171e909b3b6146742bbb2fbcb9066a5cfa34fa7e5d5813e22c34eea6f73a","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-13T19:06:39+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}}]}