Retrieves all shipments created under your account for a specific calendar month and year. Returns a summary list including tracking numbers, carriers, statuses, and creation dates.

When to use: Call this endpoint to build shipment history dashboards, generate monthly shipping reports, reconcile invoices, or audit shipment volumes for a given period.

Prerequisites:

• Valid JWT token in the Authorization header
• Month (MM) as a zero-padded two-digit string (01-12)
• Year (YYYY) as a four-digit string

Key behaviors:

• Returns all shipments for the authenticated account within the specified month
• Results include tracking_number, carrier, status, and created_at for each shipment
• The tracking_number from the response can be used with GET /guide/{tracking_number} to fetch full shipment details
• Large result sets may be paginated; check the response for pagination metadata