{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":500,"cluster_id":5000011539,"lat":20.615,"lng":78.105},"signals":[{"signal":"temperature","resolved_at":"2026-08-08T23:00:57Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":500,"cluster_id":5000011539,"value":{"temperature_c_idw":27.2737},"valid_time":{"kind":"valid_time","requested":"2026-08-08T23:00:57Z","served_window_start_utc":"2026-08-08T22:16:35+00:00","served_window_end_utc":"2026-08-08T23:16:35+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":1550,"pin_sha256":"b332053014ff22c67b452a8e57fe7cfcec0da5820ecd9717ae68666a205253e5","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T23:16:35+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":"2026-08-08T23:00:57Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":500,"cluster_id":5000011539,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-08-08T23:00:57Z","served_window_start_utc":"2026-08-08T22:16:35+00:00","served_window_end_utc":"2026-08-08T23:16:35+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":1550,"pin_sha256":"b332053014ff22c67b452a8e57fe7cfcec0da5820ecd9717ae68666a205253e5","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T23:16:35+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":"2026-08-08T18:00:58Z","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` 2026-08-08T18:00:58Z is after the latest witnessed instant (2026-08-06T07:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-08T23:00:57Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":500,"cluster_id":5000011539,"value":{"aqi_pm2_5_idw":31.833,"aqi_pm10_idw":60.8177,"aqi_no2_idw":9.5046,"aqi_so2_idw":7.9148,"aqi_co_idw":20.3005,"aqi_ozone_idw":10.8349},"valid_time":{"kind":"valid_time","requested":"2026-08-08T23:00:57Z","served_window_start_utc":"2026-08-08T23:00:53+00:00","served_window_end_utc":"2026-08-09T00:00:53+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":3,"aqi_pm10_n_stations":2,"aqi_no2_n_stations":3,"aqi_so2_n_stations":3,"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":972,"pin_sha256":"bfbcb3caf2e51dd38ee43e927e13756de2e3e3574839f41c63689487a45ffc8b","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-09T00:00:53+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":"2026-08-08T23:00:57Z","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":500,"cluster_id":5000011539,"value":{"temperature_c_idw":25.6962,"rainfall_mm_24h_idw":4.4605,"humidity_pct_idw":86.0231,"wind_speed_kmph_idw":14.7076},"valid_time":{"kind":"valid_time","requested":"2026-08-08T23:00:57Z","served_window_start_utc":"2026-08-08T22:06:48+00:00","served_window_end_utc":"2026-08-08T23:06:48+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":1273,"pin_sha256":"6745802d895ddd156b4eeab12441dbc4a26a65b2adf2dee407772883556b1de7","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-08T23:06:48+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}}]}