{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":468,"cluster_id":4680006774,"lat":21.325,"lng":78.045},"signals":[{"signal":"temperature","resolved_at":"2026-09-12T19:13:23Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":468,"cluster_id":4680006774,"value":{"temperature_c_idw":25.0373},"valid_time":{"kind":"valid_time","requested":"2026-09-12T19:13:23Z","served_window_start_utc":"2026-09-12T18:16:36+00:00","served_window_end_utc":"2026-09-12T19:16:36+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":2369,"pin_sha256":"fad44b8d67be2e27d484b0f6e07ab59e5348f9557f3964ce02d949d228b4a5cd","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-09-12T19:16:36+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":"2026-09-12T19:13:23Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":468,"cluster_id":4680006774,"value":{"rainfall_mm_24h_idw":33.7623},"valid_time":{"kind":"valid_time","requested":"2026-09-12T19:13:23Z","served_window_start_utc":"2026-09-12T18:16:36+00:00","served_window_end_utc":"2026-09-12T19:16:36+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":2369,"pin_sha256":"fad44b8d67be2e27d484b0f6e07ab59e5348f9557f3964ce02d949d228b4a5cd","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-09-12T19:16:36+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":"2026-09-12T14:13:23Z","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` 2026-09-12T14:13:23Z is after the latest witnessed instant (2026-09-09T21:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-09-12T19:13:23Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":468,"cluster_id":4680006774,"value":{"aqi_pm2_5_idw":28.7403,"aqi_pm10_idw":34.1712,"aqi_no2_idw":8.3635,"aqi_so2_idw":4.1101,"aqi_co_idw":21.4133,"aqi_ozone_idw":12.3595},"valid_time":{"kind":"valid_time","requested":"2026-09-12T19:13:23Z","served_window_start_utc":"2026-09-12T19:00:54+00:00","served_window_end_utc":"2026-09-12T20:00:54+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":3,"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":1610,"pin_sha256":"f7ff3506b03e0a900ef3cc9aa47ca620cccdfec3faf7b55b6e5829329311ac9c","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-09-12T20:00:54+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":"2026-09-12T19:13:23Z","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":468,"cluster_id":4680006774,"value":{"temperature_c_idw":23.9931,"rainfall_mm_24h_idw":18.7257,"humidity_pct_idw":96.6648,"wind_speed_kmph_idw":11.4902},"valid_time":{"kind":"valid_time","requested":"2026-09-12T19:13:23Z","served_window_start_utc":"2026-09-12T19:06:40+00:00","served_window_end_utc":"2026-09-12T20:06:40+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":2110,"pin_sha256":"0c87ad2d882ccdd6b1d5daeafd525eae1cbcf6750150a3b75c380d750d3df436","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-09-12T20:06:40+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}}]}