A shipping API lets your application get carrier rates, create labels, validate addresses, and receive tracking updates in code, without a person logging into a carrier website. This hub explains each capability, how the requests and responses work, and how to design a reliable shipping integration.
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Shipping APIs for Developers
A developer guide to shipping APIs: real-time rates, label creation, tracking webhooks, and address validation, with plain explanations of how each piece fits together.
Articles in Shipping APIs for Developers
Shipping tracking API and webhooks explained
A shipping tracking API reports where a package is, via polling or webhooks. Learn how each works, when to use which, and how to build a webhook receiver that verifies signatures and stays idempotent.
Shipping rate API: how real-time rates work
A shipping rate API returns live carrier prices for a shipment in real time. Learn how real-time rating works, what data you must send for an accurate quote, and how to rate shop automatically.
How to create a shipping label with an API
Creating a shipping label with an API is a two-step flow: rate the shipment, then buy it to get a printable label and tracking number. Here is the full flow, print formats, voids, and errors to handle.
Address validation API: why it matters
An address validation API checks that a shipping address is real and deliverable before you buy a label, preventing surcharges, failed deliveries, and returns. Here is how it works and where to use it.
What is a shipping API? How it works and what it does
A shipping API lets your app fetch live rates, buy and print labels, validate addresses, and track packages programmatically. Here is how the request and response flow works, and how the core operations fit together.