{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":490,"cluster_id":4900001571,"lat":18.155,"lng":74.515},"signals":[{"signal":"temperature","resolved_at":"2026-08-10T00:45:54Z","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":4900001571,"value":{"temperature_c_idw":24.0767},"valid_time":{"kind":"valid_time","requested":"2026-08-10T00:45:54Z","served_window_start_utc":"2026-08-10T00:16:41+00:00","served_window_end_utc":"2026-08-10T01:16:41+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":1576,"pin_sha256":"c38a144f356c690830d5491248abd77bed288306e3c6504ec36c32a3c23145ce","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-10T01:16:41+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":"2026-08-10T00:45:54Z","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":4900001571,"value":{"rainfall_mm_24h_idw":0.5685},"valid_time":{"kind":"valid_time","requested":"2026-08-10T00:45:54Z","served_window_start_utc":"2026-08-10T00:16:41+00:00","served_window_end_utc":"2026-08-10T01:16:41+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":1576,"pin_sha256":"c38a144f356c690830d5491248abd77bed288306e3c6504ec36c32a3c23145ce","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-10T01:16:41+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":"2026-08-09T19:45:56Z","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` 2026-08-09T19:45:56Z is after the latest witnessed instant (2026-08-07T03:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-08-09T19:45:56Z","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":4900001571,"value":{"aqi_pm2_5_idw":31,"aqi_pm10_idw":63,"aqi_no2_idw":8.9632,"aqi_so2_idw":10,"aqi_co_idw":null,"aqi_ozone_idw":27},"valid_time":{"kind":"valid_time","requested":"2026-08-09T19:45:56Z","served_window_start_utc":"2026-08-09T19:00:53+00:00","served_window_end_utc":"2026-08-09T20:00:53+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":1,"aqi_pm10_n_stations":1,"aqi_no2_n_stations":2,"aqi_so2_n_stations":1,"aqi_co_n_stations":0,"aqi_ozone_n_stations":1},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":987,"pin_sha256":"a5e2ebf0aee7afc5493808d4828609fb6d4da7206bc91ceaaf93ff8c4c24383b","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-09T20:00:53+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":"2026-08-10T00:45:54Z","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":4900001571,"value":{"temperature_c_idw":25.8972,"rainfall_mm_24h_idw":3.1532,"humidity_pct_idw":85.9558,"wind_speed_kmph_idw":15.9116},"valid_time":{"kind":"valid_time","requested":"2026-08-10T00:45:54Z","served_window_start_utc":"2026-08-10T00:06:28+00:00","served_window_end_utc":"2026-08-10T01:06:28+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":2,"rainfall_mm_24h_n_stations":2,"humidity_pct_n_stations":2,"wind_speed_kmph_n_stations":2},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_o_google_v1","pin_seq":1299,"pin_sha256":"51f63e865a01f1d38e4175bfdff4ea6911a5a65a12677c80c81c265350f95410","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-08-10T01:06:28+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}}]}