Subscribe to multi-modal shipment visibility and retrieve predictive ETAs via the project44 REST API

Steps

1. Obtain OAuth 2.0 client credentials from the project44 developer portal and POST to the token endpoint for your region (Americas: na12, EU: eu12) to get a bearer token
2. Create a shipment record by POST to the project44 shipments API with identifiers (PRO number, BOL, or tracking number), carrier SCAC code, origin, and destination
3. Subscribe to tracking updates by configuring a webhook in project44 or by polling GET /api/v4/shipments/{shipmentId}/tracking for latest position and ETA data
4. Parse the predictiveEta field from the tracking response and surface it in your TMS or customer-facing interface
5. For ocean shipments, use GET /api/v4/shipments/{shipmentId}/positionhistory and /eventhistory endpoints to retrieve vessel positions and port event milestones
6. Handle regional endpoint differences: use na12-based URLs for Americas shipments and eu12-based URLs for European shipments to comply with data residency requirements