{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":484,"cluster_id":4840000007,"lat":20.595,"lng":79.245},"signals":[{"signal":"temperature","resolved_at":"2026-07-22T01:29:33Z","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":4840000007,"value":{"temperature_c_idw":24.029},"valid_time":{"kind":"valid_time","requested":"2026-07-22T01:29:33Z","served_window_start_utc":"2026-07-22T01:16:44+00:00","served_window_end_utc":"2026-07-22T02:16:44+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1121,"pin_sha256":"40a0f0a9845ee8deb8cfcfebf94f198aae53a9c77ee7efc3e5ce172b7a7f4398","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-22T02:16:44+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":"2026-07-22T01:29:33Z","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":4840000007,"value":{"rainfall_mm_24h_idw":41.864},"valid_time":{"kind":"valid_time","requested":"2026-07-22T01:29:33Z","served_window_start_utc":"2026-07-22T01:16:44+00:00","served_window_end_utc":"2026-07-22T02:16:44+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1121,"pin_sha256":"40a0f0a9845ee8deb8cfcfebf94f198aae53a9c77ee7efc3e5ce172b7a7f4398","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-22T02:16:44+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":"2026-07-21T20:29:33Z","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` 2026-07-21T20:29:33Z is after the latest witnessed instant (2026-07-19T08:29:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-07-21T20:29:33Z","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":4840000007,"value":{"aqi_pm2_5_idw":13.6172,"aqi_pm10_idw":15,"aqi_no2_idw":11.9438,"aqi_so2_idw":19,"aqi_co_idw":37,"aqi_ozone_idw":9.2635},"valid_time":{"kind":"valid_time","requested":"2026-07-21T20:29:33Z","served_window_start_utc":"2026-07-21T20:00:53+00:00","served_window_end_utc":"2026-07-21T21:00:53+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":2,"aqi_pm10_n_stations":1,"aqi_no2_n_stations":2,"aqi_so2_n_stations":1,"aqi_co_n_stations":1,"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":660,"pin_sha256":"1b8e6562a39726aba3f0a4b5579158e4247002ef230f3f22cd31085ca7ec7c29","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-21T21:00:53+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":"2026-07-22T01:29:33Z","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":4840000007,"value":{"temperature_c_idw":24.3557,"rainfall_mm_24h_idw":31.3331,"humidity_pct_idw":94.5282,"wind_speed_kmph_idw":17.8592},"valid_time":{"kind":"valid_time","requested":"2026-07-22T01:29:33Z","served_window_start_utc":"2026-07-22T01:06:45+00:00","served_window_end_utc":"2026-07-22T02:06:45+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":844,"pin_sha256":"ed16cdca6bfdd76b5399a8cabc0100fe8f60127d285dae709147d1a0f80e0a16","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-22T02:06:45+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}}]}