{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":491,"cluster_id":4910004656,"lat":18.855,"lng":72.945},"signals":[{"signal":"temperature","resolved_at":"2026-08-29T06:41:11Z","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":4910004656,"value":{"temperature_c_idw":29.4909},"valid_time":{"kind":"valid_time","requested":"2026-08-29T06:41:11Z","served_window_start_utc":"2026-08-29T06:16:46+00:00","served_window_end_utc":"2026-08-29T07:16:46+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":2035,"pin_sha256":"8958f9ef4bfba3aa94cf58cd3172a4abae10b7d1df6dd809eb1ae823b19d4f50","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-29T07:16:46+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":"2026-08-29T06:41:11Z","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":4910004656,"value":{"rainfall_mm_24h_idw":0.0006},"valid_time":{"kind":"valid_time","requested":"2026-08-29T06:41:11Z","served_window_start_utc":"2026-08-29T06:16:46+00:00","served_window_end_utc":"2026-08-29T07:16:46+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":2035,"pin_sha256":"8958f9ef4bfba3aa94cf58cd3172a4abae10b7d1df6dd809eb1ae823b19d4f50","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-29T07:16:46+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":"2026-08-29T06:41:11Z","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` 2026-08-29T06:41:11Z is after the latest witnessed instant (2026-08-28T20:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-29T11:41:11Z","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":4910004656,"value":{"aqi_pm2_5_idw":11.5891,"aqi_pm10_idw":34.5137,"aqi_no2_idw":17.6079,"aqi_so2_idw":4.0286,"aqi_co_idw":16.7433,"aqi_ozone_idw":9.5807},"valid_time":{"kind":"valid_time","requested":"2026-08-29T11:41:11Z","served_window_start_utc":"2026-08-29T11:00:53+00:00","served_window_end_utc":"2026-08-29T12:00:53+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":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":1330,"pin_sha256":"dd42e6081cac051c9adf9791f9a75f454a105112eec7d92b3367f5c7d113040d","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-29T12:00:53+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":"2026-08-29T11:41:11Z","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":4910004656,"value":{"temperature_c_idw":27.7728,"rainfall_mm_24h_idw":7.7525,"humidity_pct_idw":75.7347,"wind_speed_kmph_idw":21.0569},"valid_time":{"kind":"valid_time","requested":"2026-08-29T11:41:11Z","served_window_start_utc":"2026-08-29T11:06:49+00:00","served_window_end_utc":"2026-08-29T12:06:49+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":1766,"pin_sha256":"fec55d9bc5f9181ec73de1c9857c26ad4206103114b876470df67941640eaace","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-29T12:06:49+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}}]}