USPS Developer Portal

The USPS® Developer Portal is for software developers who would like to integrate Postal Service functionality into their ecommerce, shipping, or logistics systems. Access and use USPS tools and resources conveniently within your site or application.

Man with Box

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Work with USPS and our partner network to bring your application to market.

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View common use cases, learn about USPS and get started with our APIs.

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Use our APIs to build and test your own apps in a sandbox or live customer environment.

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Harness the Power of USPS Services

To enhance the commercial customer experience, the United States Postal Service® has deployed a new API Gateway and API Developer Portal to provide leading-edge, scalable API management. This will replace legacy Web Tools® eCommerce interfaces at a future date. Benefits include:
  • Modernized RESTful, HTTP-based APIs
  • Increased security and authentication using OAuth2.0 Client Credentials
  • User-friendly self-service developer onboarding
  • Test environments, interactive documentation and API catalogs
  • Software development toolkits (SDKs) in multiple programming languages
We want to make it easier for customers to do business with us in Delivering for America and are excited to join your development teams on this journey.
Harness the Power