FedEx

FedEx Developer Portal provides comprehensive REST APIs for shipping and logistics integration with OAuth 2.0 bearer token authentication. Access tokens expire after 60 minutes requiring programmatic refresh.

The API suite covers Ship, Track, Rate & Transit Times, Address Validation, Pickup, Global Trade, Open Ship (multi-package shipments), Document Management, and webhooks for real-time notifications. Approximately 100 endpoints across various services. Supports thermal and plain paper label printing with multiple label formats. Sandbox environment with virtualized responses for testing without backend dependencies. Sample code available in multiple programming languages. Rate limiting and throttling management in place. Requires FedEx shipper account for production access.

It's ideal for e-commerce platforms, logistics management systems, warehouse automation, and shipping integrations needing comprehensive carrier functionality with global reach.