This API is intended as a supplement to the standard Register trackings workflow.
It is useful for one-off or occasional lookups where you need the latest shipment details immediately and do not need to store the tracking number.

Notes:

1. Each request consumes one tracking quota.
2. Tracking numbers queried via this API are not stored in your backend account.
3. Rate limit: maximum 1 request per second.
4. Designed for occasional use — not recommended for bulk or frequent calls.

Use case:
Check a shipment’s latest status instantly without adding it to your registered tracking list.