{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":477,"cluster_id":4770000814,"lat":19.455,"lng":77.155},"signals":[{"signal":"temperature","resolved_at":"2026-07-23T05:27:37Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":477,"cluster_id":4770000814,"value":{"temperature_c_idw":26.6618},"valid_time":{"kind":"valid_time","requested":"2026-07-23T05:27:37Z","served_window_start_utc":"2026-07-23T05:16:49+00:00","served_window_end_utc":"2026-07-23T06:16:49+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1149,"pin_sha256":"8b80b13cfeac8060426e35a821fee8c581aaca009a6dd70a8c0929568665c230","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-23T06:16:49+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":"2026-07-23T05:27:37Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":477,"cluster_id":4770000814,"value":{"rainfall_mm_24h_idw":1.8517},"valid_time":{"kind":"valid_time","requested":"2026-07-23T05:27:37Z","served_window_start_utc":"2026-07-23T05:16:49+00:00","served_window_end_utc":"2026-07-23T06:16:49+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":1149,"pin_sha256":"8b80b13cfeac8060426e35a821fee8c581aaca009a6dd70a8c0929568665c230","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-23T06:16:49+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":"2026-07-23T05:27:37Z","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` 2026-07-23T05:27:37Z is after the latest witnessed instant (2026-07-20T16:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-07-23T10:27:37Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":477,"cluster_id":4770000814,"value":{"aqi_pm2_5_idw":21,"aqi_pm10_idw":14,"aqi_no2_idw":5.9761,"aqi_so2_idw":6.0407,"aqi_co_idw":12,"aqi_ozone_idw":null},"valid_time":{"kind":"valid_time","requested":"2026-07-23T10:27:37Z","served_window_start_utc":"2026-07-23T10:00:52+00:00","served_window_end_utc":"2026-07-23T11:00:52+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":1,"aqi_pm10_n_stations":1,"aqi_no2_n_stations":4,"aqi_so2_n_stations":2,"aqi_co_n_stations":1,"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":683,"pin_sha256":"77fd44343f4c4b69e5f615e2cb3d6dce0439f2bde0afe388e6643c8884b6d8a1","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-23T11:00:52+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":"2026-07-23T10:27:37Z","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":477,"cluster_id":4770000814,"value":{"temperature_c_idw":28.8538,"rainfall_mm_24h_idw":9.0925,"humidity_pct_idw":65.6096,"wind_speed_kmph_idw":19},"valid_time":{"kind":"valid_time","requested":"2026-07-23T10:27:37Z","served_window_start_utc":"2026-07-23T10:06:49+00:00","served_window_end_utc":"2026-07-23T11:06:49+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":877,"pin_sha256":"73e77faf82ea614d286c9688a98e46939e001d0627f05dd248e2809c7942e607","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-23T11:06:49+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}}]}