{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":500,"cluster_id":5000000841,"lat":19.655,"lng":77.655},"signals":[{"signal":"temperature","resolved_at":"2026-11-11T13:18:39Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":500,"cluster_id":5000000841,"value":{"temperature_c_idw":27.8634},"valid_time":{"kind":"valid_time","requested":"2026-11-11T13:18:39Z","served_window_start_utc":"2026-11-11T13:16:49+00:00","served_window_end_utc":"2026-11-11T14:16:49+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":3798,"pin_sha256":"c563a8668caee81566e9388e5599fa8e1c0b7dfbe8e1e4d2fe9b2b72d0166d83","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-11-11T14:16:49+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":"2026-11-11T13:18:39Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":500,"cluster_id":5000000841,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-11-11T13:18:39Z","served_window_start_utc":"2026-11-11T13:16:49+00:00","served_window_end_utc":"2026-11-11T14:16:49+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":3798,"pin_sha256":"c563a8668caee81566e9388e5599fa8e1c0b7dfbe8e1e4d2fe9b2b72d0166d83","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-11-11T14:16:49+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":"2026-11-11T13:18:39Z","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` 2026-11-11T13:18:39Z is after the latest witnessed instant (2026-11-09T01:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-11-11T18:18:39Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":500,"cluster_id":5000000841,"value":{"aqi_pm2_5_idw":null,"aqi_pm10_idw":143.8509,"aqi_no2_idw":26.5287,"aqi_so2_idw":26,"aqi_co_idw":33.6887,"aqi_ozone_idw":54.1616},"valid_time":{"kind":"valid_time","requested":"2026-11-11T18:18:39Z","served_window_start_utc":"2026-11-11T18:00:53+00:00","served_window_end_utc":"2026-11-11T19:00:53+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":0,"aqi_pm10_n_stations":3,"aqi_no2_n_stations":2,"aqi_so2_n_stations":1,"aqi_co_n_stations":2,"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":2502,"pin_sha256":"7045f2d17682b880c878390dd7cdb00e6ed86ed0c4a056ddfc13663b7d2d502b","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-11-11T19:00:53+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":"2026-11-11T13:18:39Z","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":500,"cluster_id":5000000841,"value":{"temperature_c_idw":23.4583,"rainfall_mm_24h_idw":0,"humidity_pct_idw":54.3608,"wind_speed_kmph_idw":7.6466},"valid_time":{"kind":"valid_time","requested":"2026-11-11T13:18:39Z","served_window_start_utc":"2026-11-11T13:06:39+00:00","served_window_end_utc":"2026-11-11T14:06:39+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":3544,"pin_sha256":"9614151c7ca0b176e86215d29853d1cae74d229f4d0b7e0f318c17edf479c4f3","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-11-11T14:06:39+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}}]}