{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":485,"cluster_id":4850003488,"lat":18.945,"lng":77.715},"signals":[{"signal":"temperature","resolved_at":"2026-08-31T20:05:33Z","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":4850003488,"value":{"temperature_c_idw":28.2181},"valid_time":{"kind":"valid_time","requested":"2026-08-31T20:05:33Z","served_window_start_utc":"2026-08-31T19:16:46+00:00","served_window_end_utc":"2026-08-31T20:16:46+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":2096,"pin_sha256":"66aa45414b1e42bb63335a12b958e4a85027ebe785eb16c417387399e1d07fe8","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T20:16:46+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":"2026-08-31T20:05:33Z","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":4850003488,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-08-31T20:05:33Z","served_window_start_utc":"2026-08-31T19:16:46+00:00","served_window_end_utc":"2026-08-31T20:16:46+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":2096,"pin_sha256":"66aa45414b1e42bb63335a12b958e4a85027ebe785eb16c417387399e1d07fe8","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T20:16:46+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":"2026-08-31T12:35:34Z","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` 2026-08-31T12:35:34Z is after the latest witnessed instant (2026-08-31T04:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-31T20:05:33Z","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":4850003488,"value":{"aqi_pm2_5_idw":23,"aqi_pm10_idw":37.4609,"aqi_no2_idw":8.372,"aqi_so2_idw":3.0512,"aqi_co_idw":22.5005,"aqi_ozone_idw":15},"valid_time":{"kind":"valid_time","requested":"2026-08-31T20:05:33Z","served_window_start_utc":"2026-08-31T20:00:52+00:00","served_window_end_utc":"2026-08-31T21:00:52+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":1,"aqi_pm10_n_stations":2,"aqi_no2_n_stations":2,"aqi_so2_n_stations":2,"aqi_co_n_stations":2,"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":1377,"pin_sha256":"a94c299e58a837a9df71a953f72dbbd581a3f9ceee7ff53753a07b306417e7e1","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T21:00:52+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":"2026-08-31T20:05:33Z","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":4850003488,"value":{"temperature_c_idw":24.973,"rainfall_mm_24h_idw":0.6065,"humidity_pct_idw":84.7695,"wind_speed_kmph_idw":11.9201},"valid_time":{"kind":"valid_time","requested":"2026-08-31T20:05:33Z","served_window_start_utc":"2026-08-31T19:06:37+00:00","served_window_end_utc":"2026-08-31T20:06:37+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":1822,"pin_sha256":"a63baaee12a5d2728789d717018e7f3955ad329f7c543b62fefe4ae318e8abfc","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-31T20:06:37+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}}]}