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Home/EasyPost/EasyPost API
EasyPost

EasyPost's Quickstart Gets You a Label. Everything After That Is the Real Work.

EasyPost's API documentation covers getting a test and production key, generating a label, and listening for webhook events, and following it will get you a working label call in an afternoon. The quickstart doesn't cover what happens when a carrier's degraded, a webhook gets missed, or your checkout needs a rate decision in under a second. That's the part that actually takes building.

What getting started with the EasyPost API actually involves

You'll find separate test and production API keys in your EasyPost account dashboard, and the documentation walks through authentication, creating a shipment, buying a label against a chosen rate, and setting up a webhook endpoint for tracking and status events. EasyPost also publishes a status page showing uptime for the API and its carrier connections separately, worth bookmarking if you're debugging something that looks like it might not be your code.

The carrier list is long: USPS, UPS, FedEx, DHL, and a wide range of regional carriers, all reachable through the same request shape instead of a separate integration per carrier. For WooCommerce or Shopify stores that just need basic label generation without custom logic, EasyPost and some partners publish plugins that cover the simple case without writing to the API directly.

What the quickstart doesn't prepare you for

Rate shopping across multiple carriers in real time, inside a checkout flow, with a timeout a customer will actually tolerate, is a different problem than calling the API once in a test script. So is handling a webhook that never arrives, arrives twice, or a carrier that's degraded without EasyPost's own status reflecting it yet.

EasyPost's address verification endpoint is one of the more useful pieces people miss entirely: checking an address before a label gets created catches a bad street number or missing unit before it becomes an undeliverable package three days later. Wiring that into checkout or order entry, instead of running it as an afterthought, is exactly the kind of thing that's easy to skip in a first build and expensive to skip in production.

What we build against the EasyPost API

01

Rate-shopping logic that runs inside checkout

Cheapest, fastest, or whatever rule your business actually uses gets applied the same way on every order, decided in time for checkout instead of after the fact.

02

Address verification wired into order entry

A bad address gets caught before a label exists, not after a package comes back undeliverable.

03

Already past the quickstart and stuck on something production-specific?

Tell us what's breaking, a missed webhook, a carrier timeout, a rate decision that needs to happen faster. We'll tell you straight what it takes to fix it properly.

Let's talk

Built the EasyPost quickstart and hit the part it doesn't cover?

Tell us what you're trying to get the API to do reliably in production, not just in a test call, and we'll scope the actual build. EasyPost happens to be the shipping piece here, but the same gap between a quickstart and a production system shows up everywhere else code meets a real business.

Let's talk →

Questions people ask

Where do I find my EasyPost API key?

In your EasyPost account dashboard, under API Keys. You'll have a test key for development and a separate production key, and most integration bugs trace back to one getting used where the other should be.

Where are the EasyPost API docs?

On EasyPost's own developer site, covering authentication, shipments, labels, tracking, webhooks, and address verification, with examples in several languages.

Does EasyPost have a status page?

Yes, showing uptime for the API itself and its carrier connections separately, useful for ruling out EasyPost when something looks broken.

Does EasyPost integrate with Shopify or WooCommerce?

There are plugins, from EasyPost and some partners, that cover basic label generation for both platforms without writing to the API directly. Anything past simple labeling, rate logic, custom tracking, address verification in checkout, usually means building against the API itself.

What does EasyPost's address verification actually check?

It validates and corrects a shipping address before a label gets created, catching issues like a missing unit number or an undeliverable street address, which is most useful wired into checkout or order entry rather than run after the fact.

Let's talk

Tell us the one thing your team does manually that eats up time. We read every message and reply within a day.