{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":489,"cluster_id":4890004757,"lat":19.585,"lng":76.615},"signals":[{"signal":"temperature","resolved_at":"2026-08-05T04:07:54Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":489,"cluster_id":4890004757,"value":{"temperature_c_idw":26.7202},"valid_time":{"kind":"valid_time","requested":"2026-08-05T04:07:54Z","served_window_start_utc":"2026-08-05T03:16:45+00:00","served_window_end_utc":"2026-08-05T04:16:45+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":1459,"pin_sha256":"660369268ee4685288edd5cebdddd7051269ddca4e7a28264bd9a8b89311171d","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-05T04:16:45+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":"2026-08-05T04:07:54Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":489,"cluster_id":4890004757,"value":{"rainfall_mm_24h_idw":0.6827},"valid_time":{"kind":"valid_time","requested":"2026-08-05T04:07:54Z","served_window_start_utc":"2026-08-05T03:16:45+00:00","served_window_end_utc":"2026-08-05T04:16:45+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":1459,"pin_sha256":"660369268ee4685288edd5cebdddd7051269ddca4e7a28264bd9a8b89311171d","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-05T04:16:45+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":"2026-08-04T20:37:56Z","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` 2026-08-04T20:37:56Z is after the latest witnessed instant (2026-08-02T05:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-04T20:37:56Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":489,"cluster_id":4890004757,"value":{"aqi_pm2_5_idw":32.8547,"aqi_pm10_idw":38.5705,"aqi_no2_idw":14.8015,"aqi_so2_idw":6.004,"aqi_co_idw":38.1268,"aqi_ozone_idw":31.0007},"valid_time":{"kind":"valid_time","requested":"2026-08-04T20:37:56Z","served_window_start_utc":"2026-08-04T20:00:52+00:00","served_window_end_utc":"2026-08-04T21:00:52+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":3,"aqi_pm10_n_stations":4,"aqi_no2_n_stations":4,"aqi_so2_n_stations":4,"aqi_co_n_stations":2,"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":898,"pin_sha256":"4280937f1c207597c0b3fd722d9e94146a3efb3a5b07e55c51468a5fa89a11ca","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-04T21:00:52+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":"2026-08-05T01:37:55Z","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":489,"cluster_id":4890004757,"value":{"temperature_c_idw":26.0179,"rainfall_mm_24h_idw":2.3924,"humidity_pct_idw":84.3992,"wind_speed_kmph_idw":16.402},"valid_time":{"kind":"valid_time","requested":"2026-08-05T01:37:55Z","served_window_start_utc":"2026-08-05T01:06:46+00:00","served_window_end_utc":"2026-08-05T02:06:46+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1180,"pin_sha256":"0778cb3611825807c0ac4b2fbcddc0c52db9f71b0732c63275bf57b671037f9a","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-05T02:06:46+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}}]}