logistics/shipping

Rate a parcel across multiple carriers using EasyPost: create a Shipment object, retrieve all available rates, and purchase the lowest-cost rate in a single workflow

Create a prepaid return label using EasyPost's is_return flag and deliver it to a customer for a domestic parcel return

Create an EasyPost Tracker for an existing tracking number and receive real-time status updates via EasyPost webhooks

Verify a shipping address using the EasyPost Address Verification API before purchasing a label

Create a Shippo shipment, retrieve available rates, and purchase a transaction (label) for a domestic parcel

Generate a Shippo return label using the is_return flag and understand scan-based return label behavior

Create a Shippo Batch to purchase labels for multiple shipments simultaneously and retrieve the combined results

Register a Shippo tracking webhook and process incoming carrier tracking event payloads

Use ShipEngine to rate-shop across multiple carriers and select the best rate for a parcel shipment

Purchase a shipping label via ShipEngine using a rate ID and void it if the shipment is cancelled

Validate a shipping address using the ShipEngine Address Validation API before label purchase

Create a FedEx domestic shipment and retrieve a shipping label using the FedEx Ship REST API with OAuth 2.0 authentication

Request a FedEx Rate API quote for a domestic shipment and compare service-level costs

Retrieve FedEx shipment tracking status and milestone events via the FedEx Track REST API

Create a domestic UPS shipment and generate a shipping label using the UPS Shipping REST API with OAuth 2.0

Retrieve UPS shipment rates for a domestic parcel using the UPS Rating REST API with OAuth 2.0

Retrieve UPS shipment tracking status and event history using the UPS Tracking REST API

Generate a USPS domestic shipping label using the USPS Domestic Labels v3 API with OAuth 2.0 authentication

Rate and create an international shipment using the DHL Express MyDHL REST API

Understand and implement Stamps.com / Endicia postage label concepts via API for domestic USPS mail classes

Handle multi-piece shipments (MPS) in carrier APIs: group packages under a single shipment identifier and generate per-piece labels

Build a customs declaration and commercial invoice payload for an international shipment label via carrier APIs

Schedule a carrier pickup for a prepared shipment via carrier API to arrange driver collection from a shipper location

Generate a GS1-128 barcode and SSCC (Serial Shipping Container Code) label for pallet-level shipping to retail trading partners