Web Tools APIs

USPS Web Tools® are e-commerce application program interfaces (APIs) that can be used for online stores or customer service centers–free of charge.

Get access to USPS Web Tools through our simple registration process.

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Have an e-commerce website?

View a list of available Web Tools and learn how they can make your shipping operations easier.

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Have programming experience?

Get step-by-step instructions to integrate Web Tools APIs into your web site.

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Want to hire a professional?

See a list of experts who can help you integrate Web Tools APIs.

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Contact Us

If you have technical questions or need more information submit a request via email.

Email: uspstechnicalsupport@mailps.custhelp.com