{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":484,"cluster_id":4840001913,"lat":20.945,"lng":79.475},"signals":[{"signal":"temperature","resolved_at":"2026-08-12T12:10:57Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":484,"cluster_id":4840001913,"value":{"temperature_c_idw":28.2144},"valid_time":{"kind":"valid_time","requested":"2026-08-12T12:10:57Z","served_window_start_utc":"2026-08-12T11:16:45+00:00","served_window_end_utc":"2026-08-12T12:16:45+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":1635,"pin_sha256":"5376d89d75247029f3dc144a1b5c9ec1488e68801d9ed6b9c893256465b45b5c","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-12T12:16:45+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":"2026-08-12T12:10:57Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":484,"cluster_id":4840001913,"value":{"rainfall_mm_24h_idw":0.5523},"valid_time":{"kind":"valid_time","requested":"2026-08-12T12:10:57Z","served_window_start_utc":"2026-08-12T11:16:45+00:00","served_window_end_utc":"2026-08-12T12:16:45+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":1635,"pin_sha256":"5376d89d75247029f3dc144a1b5c9ec1488e68801d9ed6b9c893256465b45b5c","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-12T12:16:45+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":"2026-08-12T04:40:57Z","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` 2026-08-12T04:40:57Z is after the latest witnessed instant (2026-08-09T14:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-12T12:10:57Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":484,"cluster_id":4840001913,"value":{"aqi_pm2_5_idw":null,"aqi_pm10_idw":null,"aqi_no2_idw":null,"aqi_so2_idw":null,"aqi_co_idw":null,"aqi_ozone_idw":null},"valid_time":{"kind":"valid_time","requested":"2026-08-12T12:10:57Z","served_window_start_utc":"2026-08-12T12:00:53+00:00","served_window_end_utc":"2026-08-12T13:00:53+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":0,"aqi_pm10_n_stations":0,"aqi_no2_n_stations":0,"aqi_so2_n_stations":0,"aqi_co_n_stations":0,"aqi_ozone_n_stations":0},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":1032,"pin_sha256":"84ff9f6f394b0fd0a6eb1895a42fbfeb4d8afac59599ca38ef6845244fba0910","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-12T13:00:53+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":"2026-08-12T09:40:57Z","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":484,"cluster_id":4840001913,"value":{"temperature_c_idw":28.9065,"rainfall_mm_24h_idw":11.3537,"humidity_pct_idw":78.2852,"wind_speed_kmph_idw":13.9206},"valid_time":{"kind":"valid_time","requested":"2026-08-12T09:40:57Z","served_window_start_utc":"2026-08-12T09:06:48+00:00","served_window_end_utc":"2026-08-12T10:06:48+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":1356,"pin_sha256":"b5729d56885703a87db5528c08d078558a6d1028d8921eef6f04f14457fcd63e","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-12T10:06:48+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}}]}