{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":498,"cluster_id":4980003025,"lat":20.805,"lng":78.545},"signals":[{"signal":"temperature","resolved_at":"2026-08-27T12:06:35Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":498,"cluster_id":4980003025,"value":{"temperature_c_idw":26.2802},"valid_time":{"kind":"valid_time","requested":"2026-08-27T12:06:35Z","served_window_start_utc":"2026-08-27T11:16:46+00:00","served_window_end_utc":"2026-08-27T12:16:46+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":1992,"pin_sha256":"6e4e63fda5e750f5af2dc89cd9a06c9555eccc69324fb71f0ad6e97f73d99e69","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T12:16:46+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":"2026-08-27T12:06:35Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":498,"cluster_id":4980003025,"value":{"rainfall_mm_24h_idw":0.1638},"valid_time":{"kind":"valid_time","requested":"2026-08-27T12:06:35Z","served_window_start_utc":"2026-08-27T11:16:46+00:00","served_window_end_utc":"2026-08-27T12:16:46+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":1992,"pin_sha256":"6e4e63fda5e750f5af2dc89cd9a06c9555eccc69324fb71f0ad6e97f73d99e69","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T12:16:46+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":"2026-08-27T07:06:35Z","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` 2026-08-27T07:06:35Z is after the latest witnessed instant (2026-08-26T21:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-27T12:06:35Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":498,"cluster_id":4980003025,"value":{"aqi_pm2_5_idw":40.3461,"aqi_pm10_idw":54.9162,"aqi_no2_idw":7.809,"aqi_so2_idw":2,"aqi_co_idw":17.2647,"aqi_ozone_idw":18.038},"valid_time":{"kind":"valid_time","requested":"2026-08-27T12:06:35Z","served_window_start_utc":"2026-08-27T12:00:53+00:00","served_window_end_utc":"2026-08-27T13:00:53+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":4,"aqi_no2_n_stations":2,"aqi_so2_n_stations":1,"aqi_co_n_stations":4,"aqi_ozone_n_stations":2},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":1289,"pin_sha256":"c804d1a4b68d01179640b05695dd9cb9207073d5c39b0dfe7693f31314621108","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T13:00:53+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":"2026-08-27T12:06:35Z","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":498,"cluster_id":4980003025,"value":{"temperature_c_idw":26.8674,"rainfall_mm_24h_idw":6.0133,"humidity_pct_idw":79.6376,"wind_speed_kmph_idw":14.0721},"valid_time":{"kind":"valid_time","requested":"2026-08-27T12:06:35Z","served_window_start_utc":"2026-08-27T11:06:49+00:00","served_window_end_utc":"2026-08-27T12:06:49+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":1718,"pin_sha256":"86be78900dca46268fdb013ff2346e5b5ffc7f70b603dd0ab9c8be5ad820211c","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-27T12:06:49+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}}]}