{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":490,"cluster_id":4900007450,"lat":18.595,"lng":73.835},"signals":[{"signal":"temperature","resolved_at":"2026-08-11T07:44:12Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":490,"cluster_id":4900007450,"value":{"temperature_c_idw":27.5902},"valid_time":{"kind":"valid_time","requested":"2026-08-11T07:44:12Z","served_window_start_utc":"2026-08-11T07:16:53+00:00","served_window_end_utc":"2026-08-11T08:16:53+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1607,"pin_sha256":"09ad67d8a141cb02917179aceed43c27fa7179d3c2e407f2abbc6cd56de2c0db","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-11T08:16:53+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":"2026-08-11T07:44:12Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":490,"cluster_id":4900007450,"value":{"rainfall_mm_24h_idw":0.1664},"valid_time":{"kind":"valid_time","requested":"2026-08-11T07:44:12Z","served_window_start_utc":"2026-08-11T07:16:53+00:00","served_window_end_utc":"2026-08-11T08:16:53+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1607,"pin_sha256":"09ad67d8a141cb02917179aceed43c27fa7179d3c2e407f2abbc6cd56de2c0db","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-11T08:16:53+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":"2026-08-11T02:44:13Z","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` 2026-08-11T02:44:13Z is after the latest witnessed instant (2026-08-08T10:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-11T07:44:12Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":490,"cluster_id":4900007450,"value":{"aqi_pm2_5_idw":35.6732,"aqi_pm10_idw":62.1379,"aqi_no2_idw":16.793,"aqi_so2_idw":4.2038,"aqi_co_idw":23.7203,"aqi_ozone_idw":11.4135},"valid_time":{"kind":"valid_time","requested":"2026-08-11T07:44:12Z","served_window_start_utc":"2026-08-11T07:00:53+00:00","served_window_end_utc":"2026-08-11T08:00:53+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":4,"aqi_pm10_n_stations":4,"aqi_no2_n_stations":4,"aqi_so2_n_stations":4,"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":1010,"pin_sha256":"78d148872650de0afe93906a0cd6c46bca2074b1e700cb19d27fe70e0a06dab7","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-11T08:00:53+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":"2026-08-11T07:44:12Z","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":490,"cluster_id":4900007450,"value":{"temperature_c_idw":26.6016,"rainfall_mm_24h_idw":2.9976,"humidity_pct_idw":77.0553,"wind_speed_kmph_idw":22.9771},"valid_time":{"kind":"valid_time","requested":"2026-08-11T07:44:12Z","served_window_start_utc":"2026-08-11T07:06:48+00:00","served_window_end_utc":"2026-08-11T08:06:48+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":1330,"pin_sha256":"791e3a6db4025e8053ec7d607da3a90d91063702b8f7a5603d2aadecaf141bac","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-11T08:06:48+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}}]}