USPS Node.js API

Connect with USPS Using Node.js and EasyPost

Sign up free Contact sales

Using Node.js to Integrate with USPS?

You can’t do it through USPS. They use SOAP/XML for their endpoints with absolutely no client libraries or documentation to support you, but you can use Easypost to connect to USPS today using Node.js.

With EasyPost’s USPS Node.js API, you can:
  • Print labels at the industry’s lowest price
  • Track every outbound (or inbound) package
  • Verify every address, domestic or international
  • Shop for rates across your shipping accounts
  • Automate package insurance with low premiums
const to_address = new api.Address(...);
const from_address = new api.Address(...);
const parcel = new api.Parcel({
  predefined_package: "Parcel",
  weight: 28,

const shipment = new api.Shipment({
  to_address: to_address,
  from_address: from_address,
  parcel: parcel
}); => {
Tracking Packages

Track packages across all major carriers.

Address Verification

Validate domestic and international addresses.

International & Customs

Learn how to handle international shipping seamlessly.

Shipping Insurance

Shipping insurance for all items sent with EasyPost.

Leading Companies Rely on EasyPost


QALO uses EasyPost to automate their returns for an unbeatable customer experience.


With EasyPost's API, Expedited Passports & Visas cut their operational load in half.


Casper sped up their European launch thanks to EasyPost's support of over 30+ European carriers.

EasyPost in the News

Connect to EasyPost Today

Sign up and start shipping in the same day with our Node.js Module. If you have any questions, or if you want to talk logistics, feel free to reach out to one of our shipping experts.