Retrieves the full details of a specific shipment, including origin/destination addresses, carrier, current status, and tracking history. This is the primary endpoint for looking up individual shipments and monitoring delivery progress.

When to use: Call this endpoint to display shipment detail pages, check delivery status, provide tracking information to customers, or verify shipment data after creation.

Prerequisites:

• Valid JWT token in the Authorization header
• A valid tracking_number from a previously created shipment (obtained from GET /guide/{MM}/{YYYY} or from the Shipping API shipment creation response)

Key behaviors:

• Returns comprehensive shipment data including origin, destination, carrier, status, created_at, and updated_at
• The status field reflects the latest known delivery status from the carrier
• This endpoint returns data for shipments created through your Envia account; it does not perform cross-carrier universal tracking
• Use the tracking_number exactly as returned by other Envia endpoints (case-sensitive)