get https://{merchant}.fulfil.io/services/3pl/v1/customer-shipments.json
Returns a list of shipments (max. 100 shipments per page).
The default behavior is to return pending shipments (that have not been acknowledged). You can also request open (acknowledged, but not shipped) or done shipments.
On-hold shipments
If a shipment has been marked as on-hold in Fulfil, it will not be exposed in the list of shipments available to a 3PL