Shippo + A USPS API for Easy Integration

Shippo’s USPS API Offers the Best USPS Shipping Rates

Leverage Shippo's USPS API to access shipping rates from USPS and 60+ other carriers.

USPS Postage Estimations


Shippo is a multi-carrier shipping software. Shippo’s API is one integration point for 85+ carriers, including USPS. With Shippo’s USPS API, you can:

  • Get the best USPS rates
  • Buy shipping labels
  • Manage tracking information
  • Produce manifests/SCAN forms
  • Schedule pickups
  • And much more!

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Supported USPS Service Levels

  • First Class Package Service®
  • First Class Package International Service®
  • Priority Mail®
  • Priority Mail International®
  • Priority Mail Cubic®
  • Priority Mail Express®
  • Priority Mail Express International®
  • Parcel Select®
  • Address Validation®

Why Shippo's USPS API?

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Comprehensive Docs

Easy-to-follow documentation, tutorials, and API reference in our developer center.

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Client Libraries

Quickly integrate with client libraries in PHP, Python, cURL, Ruby, NodeJS, Java, and C#.

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Push-based Webhooks

Get notified of status changes as soon as they happen with zero delays, so you can stay up to date.

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Developer Friendly

Our RESTful API offers clearly-defined endpoints, example code, and test mode.

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Built for Scale

Our API was built for scale, performance, and reliability, so you can depend on it.

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Great Technical Support

Our fast, helpful technical support team can answer any questions you have.

Tracking Information

A La Carte USPS API Shipping Options

We also offer a standalone USPS Address verification API and a USPS Tracking API. For more information, reach out to

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You're in Good Company

Tens of thousands of savvy e-commerce businesses and partners have mastered their shipping with Shippo's API offerings.

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Everything you need for professional-grade shipping + deep discounts from top carriers.
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