{"source":"https://api.gridrock.ai/mcp","tool":"read_at","scope":"mh36","archetype":"now","cell":{"admin_code":496,"cluster_id":4960001233,"lat":17.385,"lng":75.805},"signals":[{"signal":"temperature","resolved_at":"2026-10-14T06:48:08Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"temperature","unit":"celsius","admin_code":496,"cluster_id":4960001233,"value":{"temperature_c_idw":31.9953},"valid_time":{"kind":"valid_time","requested":"2026-10-14T06:48:08Z","served_window_start_utc":"2026-10-14T06:16:47+00:00","served_window_end_utc":"2026-10-14T07:16:47+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":3123,"pin_sha256":"29eb72e772bd9db193ad13bb99cee98e62d9b478a618d5a98bb342be5d4f7e27","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-14T07:16:47+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":"2026-10-14T06:48:08Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"rainfall_imd","unit":"mm_24h","admin_code":496,"cluster_id":4960001233,"value":{"rainfall_mm_24h_idw":0},"valid_time":{"kind":"valid_time","requested":"2026-10-14T06:48:08Z","served_window_start_utc":"2026-10-14T06:16:47+00:00","served_window_end_utc":"2026-10-14T07:16:47+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":3123,"pin_sha256":"29eb72e772bd9db193ad13bb99cee98e62d9b478a618d5a98bb342be5d4f7e27","provenance_kind":"upstream-reingest:imd-city-weather-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-14T07:16:47+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":"2026-10-14T01:48:08Z","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` 2026-10-14T01:48:08Z is after the latest witnessed instant (2026-09-12T03:59:59.999000+00:00); the engine will not back-cast a value it has not yet observed (R7)"}}},{"signal":"aqi","resolved_at":"2026-10-14T06:48:08Z","envelope":{"ok":true,"tool":"read_at","generation":{"namespace":"bs:cube:0852c73eef54","schema_fingerprint_ns":"0852c73eef54"},"result":{"signal":"aqi","unit":"cpcb_per_pollutant","admin_code":496,"cluster_id":4960001233,"value":{"aqi_pm2_5_idw":34.5895,"aqi_pm10_idw":49.0248,"aqi_no2_idw":12.5093,"aqi_so2_idw":null,"aqi_co_idw":20.7329,"aqi_ozone_idw":15.4836},"valid_time":{"kind":"valid_time","requested":"2026-10-14T06:48:08Z","served_window_start_utc":"2026-10-14T06:00:53+00:00","served_window_end_utc":"2026-10-14T07:00:53+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":2,"aqi_no2_n_stations":3,"aqi_so2_n_stations":0,"aqi_co_n_stations":2,"aqi_ozone_n_stations":2},"note":"coarse witness support is disclosed; the value is not zoomed below it (§1.7)"},"witness":{"tier":"tier_m_v1","pin_seq":1912,"pin_sha256":"ff04df3203b4f71cc1f723d05a0962f809b61a169836031c6abb1be53930ea9a","provenance_kind":"upstream-reingest:cpcb-aqi-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-14T07:00:53+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":"2026-10-14T06:48:08Z","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":496,"cluster_id":4960001233,"value":{"temperature_c_idw":32.2404,"rainfall_mm_24h_idw":0,"humidity_pct_idw":32.3766,"wind_speed_kmph_idw":12.269},"valid_time":{"kind":"valid_time","requested":"2026-10-14T06:48:08Z","served_window_start_utc":"2026-10-14T06:06:43+00:00","served_window_end_utc":"2026-10-14T07:06:43+00:00","natural_cadence_seconds":3600,"note":"the witness pin whose own natural window brackets `at`; never interpolated, never back-cast (R7)"},"support":{"kind":"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":2865,"pin_sha256":"8c91c3fa68d3f425519e854add9e0a7dc6742ca1064208ebfefab2a93afef4fa","provenance_kind":"upstream-reingest:google-weather-cowitness-hourly"}},"coverage":{"temporal_kind":"valid_time","observed_window_end_utc":"2026-10-14T07:06:43+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}}]}