{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":485,"cluster_id":4850006137,"lat":19.315,"lng":77.785},"signals":[{"signal":"temperature","resolved_at":"2026-07-16T17:41:35Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":485,"cluster_id":4850006137,"value":{"temperature_c_idw":30.8361},"valid_time":{"kind":"valid_time","requested":"2026-07-16T17:41:35Z","served_window_start_utc":"2026-07-16T17:16:40+00:00","served_window_end_utc":"2026-07-16T18:16:40+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":993,"pin_sha256":"f6ed2c2496e5627377e586cbf5f0cb793f43fbc8ce30cee9fdfd23bc84e9278f","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-16T18:16:40+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":"2026-07-16T17:41:35Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":485,"cluster_id":4850006137,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-07-16T17:41:35Z","served_window_start_utc":"2026-07-16T17:16:40+00:00","served_window_end_utc":"2026-07-16T18:16:40+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":993,"pin_sha256":"f6ed2c2496e5627377e586cbf5f0cb793f43fbc8ce30cee9fdfd23bc84e9278f","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-16T18:16:40+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":"2026-07-16T12:41:36Z","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` 2026-07-16T12:41:36Z is after the latest witnessed instant (2026-07-13T18:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-07-16T17:41:35Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":485,"cluster_id":4850006137,"value":{"aqi_pm2_5_idw":null,"aqi_pm10_idw":null,"aqi_no2_idw":14,"aqi_so2_idw":null,"aqi_co_idw":56,"aqi_ozone_idw":16},"valid_time":{"kind":"valid_time","requested":"2026-07-16T17:41:35Z","served_window_start_utc":"2026-07-16T17:00:53+00:00","served_window_end_utc":"2026-07-16T18:00:53+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":0,"aqi_no2_n_stations":1,"aqi_so2_n_stations":0,"aqi_co_n_stations":1,"aqi_ozone_n_stations":1},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":572,"pin_sha256":"f3f9db8608d49f996fbbf46c2146ac446f700f83887ffa4ef8e510db33c65828","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-16T18:00:53+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":"2026-07-16T17:41:35Z","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":485,"cluster_id":4850006137,"value":{"temperature_c_idw":27.3749,"rainfall_mm_24h_idw":1.0587,"humidity_pct_idw":76.4452,"wind_speed_kmph_idw":12.4873},"valid_time":{"kind":"valid_time","requested":"2026-07-16T17:41:35Z","served_window_start_utc":"2026-07-16T17:06:48+00:00","served_window_end_utc":"2026-07-16T18:06:48+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":716,"pin_sha256":"8a9ca06cc06ad750075be536a9a8d32e00063e69a9911419a17817f5218d0265","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-16T18:06:48+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}}]}