{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":485,"cluster_id":4850000041,"lat":18.315,"lng":77.425},"signals":[{"signal":"temperature","resolved_at":"2026-07-15T10:50:43Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":485,"cluster_id":4850000041,"value":{"temperature_c_idw":33.2586},"valid_time":{"kind":"valid_time","requested":"2026-07-15T10:50:43Z","served_window_start_utc":"2026-07-15T10:16:49+00:00","served_window_end_utc":"2026-07-15T11:16:49+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":962,"pin_sha256":"6faebc871f3e15c163b63ff18b0c2fa1f641b859d939945312aef0eea5fcd46d","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-15T11:16:49+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":"2026-07-15T10:50:43Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":485,"cluster_id":4850000041,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-07-15T10:50:43Z","served_window_start_utc":"2026-07-15T10:16:49+00:00","served_window_end_utc":"2026-07-15T11:16:49+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":962,"pin_sha256":"6faebc871f3e15c163b63ff18b0c2fa1f641b859d939945312aef0eea5fcd46d","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-15T11:16:49+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":"2026-07-15T05:50:46Z","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` 2026-07-15T05:50:46Z is after the latest witnessed instant (2026-07-13T18:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-07-15T10:50:43Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":485,"cluster_id":4850000041,"value":{"aqi_pm2_5_idw":20,"aqi_pm10_idw":42,"aqi_no2_idw":null,"aqi_so2_idw":5,"aqi_co_idw":null,"aqi_ozone_idw":null},"valid_time":{"kind":"valid_time","requested":"2026-07-15T10:50:43Z","served_window_start_utc":"2026-07-15T10:00:53+00:00","served_window_end_utc":"2026-07-15T11:00:53+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":0,"aqi_so2_n_stations":1,"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":549,"pin_sha256":"a900aefb2aa2704f4421c628364624ccd1c7c0c773ac57f4cbcefb8128fc0541","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-15T11:00:53+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":"2026-07-15T10:50:43Z","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":485,"cluster_id":4850000041,"value":{"temperature_c_idw":31.3168,"rainfall_mm_24h_idw":1.1254,"humidity_pct_idw":48.282,"wind_speed_kmph_idw":16.501},"valid_time":{"kind":"valid_time","requested":"2026-07-15T10:50:43Z","served_window_start_utc":"2026-07-15T10:06:49+00:00","served_window_end_utc":"2026-07-15T11:06:49+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":685,"pin_sha256":"d8e50432231791966db7de0dca1db5d126c099c3df09bf770c353f4c38b82426","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-07-15T11:06:49+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}}]}