{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":474,"cluster_id":4740000003,"lat":20.645,"lng":74.825},"signals":[{"signal":"temperature","resolved_at":"2026-08-31T14:33:26Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":474,"cluster_id":4740000003,"value":{"temperature_c_idw":26.9158},"valid_time":{"kind":"valid_time","requested":"2026-08-31T14:33:26Z","served_window_start_utc":"2026-08-31T14:17:12+00:00","served_window_end_utc":"2026-08-31T15:17:12+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":2091,"pin_sha256":"f2251b92b8f47c5e2c8f5236ef809a34afe943bddfaba70e00042849d1114f87","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T15:17:12+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":"2026-08-31T14:33:26Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":474,"cluster_id":4740000003,"value":{"rainfall_mm_24h_idw":0.0349},"valid_time":{"kind":"valid_time","requested":"2026-08-31T14:33:26Z","served_window_start_utc":"2026-08-31T14:17:12+00:00","served_window_end_utc":"2026-08-31T15:17:12+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":2091,"pin_sha256":"f2251b92b8f47c5e2c8f5236ef809a34afe943bddfaba70e00042849d1114f87","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T15:17:12+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":"2026-08-31T09:33:26Z","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` 2026-08-31T09:33:26Z is after the latest witnessed instant (2026-08-31T01:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-31T17:03:25Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":474,"cluster_id":4740000003,"value":{"aqi_pm2_5_idw":39.7383,"aqi_pm10_idw":45.6501,"aqi_no2_idw":11.3081,"aqi_so2_idw":3.3283,"aqi_co_idw":16.2162,"aqi_ozone_idw":15.7562},"valid_time":{"kind":"valid_time","requested":"2026-08-31T17:03:25Z","served_window_start_utc":"2026-08-31T17:00:53+00:00","served_window_end_utc":"2026-08-31T18:00:53+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":3,"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":1375,"pin_sha256":"10e83bbb727e68094d0a04db57a5199e7485b648ce9199510bd454ad8bb979eb","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T18:00:53+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":"2026-08-31T17:03:25Z","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":474,"cluster_id":4740000003,"value":{"temperature_c_idw":24.4396,"rainfall_mm_24h_idw":0.8799,"humidity_pct_idw":81.4977,"wind_speed_kmph_idw":17.0751},"valid_time":{"kind":"valid_time","requested":"2026-08-31T17:03:25Z","served_window_start_utc":"2026-08-31T16:06:49+00:00","served_window_end_utc":"2026-08-31T17:06:49+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1819,"pin_sha256":"ce190f1bded5d292a6737171db5c0a764bd02c5b368b719ad8fb0a16ac461dec","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T17:06:49+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}}]}