{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":490,"cluster_id":4900002912,"lat":18.245,"lng":74.505},"signals":[{"signal":"temperature","resolved_at":"2026-08-06T21:21:51Z","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":4900002912,"value":{"temperature_c_idw":24.6823},"valid_time":{"kind":"valid_time","requested":"2026-08-06T21:21:51Z","served_window_start_utc":"2026-08-06T21:16:43+00:00","served_window_end_utc":"2026-08-06T22:16:43+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":1501,"pin_sha256":"46b2b55c3a36a3335632b088d6518e51ebfde78bf5f033abc1b8967802b0ab32","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-06T22:16:43+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":"2026-08-06T21:21:51Z","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":4900002912,"value":{"rainfall_mm_24h_idw":7.736},"valid_time":{"kind":"valid_time","requested":"2026-08-06T21:21:51Z","served_window_start_utc":"2026-08-06T21:16:43+00:00","served_window_end_utc":"2026-08-06T22:16:43+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":1501,"pin_sha256":"46b2b55c3a36a3335632b088d6518e51ebfde78bf5f033abc1b8967802b0ab32","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-06T22:16:43+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":"2026-08-06T21:21:51Z","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` 2026-08-06T21:21:51Z is after the latest witnessed instant (2026-08-04T05:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-06T21:21:51Z","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":4900002912,"value":{"aqi_pm2_5_idw":29.5414,"aqi_pm10_idw":48.5628,"aqi_no2_idw":31.3197,"aqi_so2_idw":4.3263,"aqi_co_idw":41.5925,"aqi_ozone_idw":9.5546},"valid_time":{"kind":"valid_time","requested":"2026-08-06T21:21:51Z","served_window_start_utc":"2026-08-06T21:00:52+00:00","served_window_end_utc":"2026-08-06T22:00:52+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":2,"aqi_co_n_stations":2,"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":933,"pin_sha256":"8d6a1bd20275e77d93cbdefb749151cf69710ff8d805b8bab520108fb44c631c","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-06T22:00:52+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":"2026-08-07T02:21:51Z","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":4900002912,"value":{"temperature_c_idw":25.6195,"rainfall_mm_24h_idw":4.7362,"humidity_pct_idw":83.4168,"wind_speed_kmph_idw":22.4977},"valid_time":{"kind":"valid_time","requested":"2026-08-07T02:21:51Z","served_window_start_utc":"2026-08-07T02:06:44+00:00","served_window_end_utc":"2026-08-07T03:06:44+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":1229,"pin_sha256":"0dead0ad15799ec2531285cde0a211e15359b4496f4d8d1678b565d149946f77","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-07T03:06:44+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}}]}