Check whether the GZM live transit feed is reachable and report how old it is. Call this first if a query seems to return empty results — it can distinguish 'no vehicles right now' from 'upstream is down'.

Get the current counts of vehicles, trip updates and alerts in the live feed. Cheap; does not return full payloads.

List live vehicle positions (buses, trams, trains) currently running. Use this when the user asks 'what's running', 'where is line X', or 'find a bus to Y'. Returns up to limit vehicles, newest first by timestamp.

Get a single vehicle's current position by its vehicle id or label (e.g. fleet number painted on the bus, or the entity id from a previous vehicles() call).

List live trip updates: scheduled vs predicted arrival times and any stop-skips. Use this for 'is line 6 delayed', 'what time does the next bus arrive', or 'is stop X skipped'.

Get upcoming arrivals at a specific stop, across all routes, sorted by predicted arrival time. Equivalent to a digital departure board. Returns the 'minutes_from_now' field already computed for you.

List active service alerts (planned works, delays, detours, stop closures). Use this for 'is the tram line broken?', 'any works today?', 'why is my bus late?'.

Get a single alert by entity id (e.g. from a previous alerts() result).