Technical Documentation

Use our technical documents to get step-by-step information on how to integrate USPS Web Tools® into a web site or shipping application. For technical questions, contact us at uspstechnicalsupport@mailps.custhelp.com.

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WEB TOOLS RELEASE NOTES DOCS

Current Release Notes

• January 2015 Release Notes (posted 1/23/2015)
• Web Tools FAQs
• Transition Guide: Service Delivery Calculator API
• June 2014
• May 2014
• Transition Guide: RateV3 to RateV4

 

Past Release Notes

• September 7th Maintenance Release Notes (v1.5, posted 9/4/14)
• International Delivery Confirmation Release Notes
• PMEI Guarantee to Canada Release Notes
• March 2014
• February 2014
• January 2014
• July 2013
• May 2013

 

   
DEVELOPER GUIDES & INSTRUCTIONS DOCS

Step-by-Step Instructions for All USPS Web Tools

Policies and Procedures for Software Distributors

PDF | RTF

PDF | HTM

   
API USER'S GUIDES DOCS

Address APIs

• Address Validation/Standardization
• City & State Lookup
• Zip Code™ Lookup
• Hold For Pickup Facility Information

PDF | HTM

Tracking & Delivery Information APIs

• Track & Confirm V2
• Track & Confirm Email
• Proof of Delivery
• Track & Confirm Restore Archived
• Return Recipt Electronic

PDF | HTM

Price Calculator APIs

• Domestic Rates V4
• International Rates V2

PDF | HTM 

Shipping Labels APIs - Domestic

• Priority Mail Express™ Labels 
• Hold For Pickup Labels 
• Merchandise Return Service Labels 
• Open and Distribute™ Labels
• Signature Confirmation™- Domestic Shipping Labels
• USPS Tracking™- Domestic Shipping Labels

 

PDF | HTM
PDF | HTM
PDF | HTM
PDF | HTM
PDF | HTM
PDF | HTM

Shipping Labels APIs - International

• Priority Mail Express International™
• Priority Mail International®
• First-Class Mail International®

PDF | HTM

Shipping Labels APIs - Custom Forms

• Custom Form CN22 V2
• Custom Form CP72 V3

PDF | HTM

Package Pickup APIs

PDF | HTM

Service Standards & Commitments APIs 

• Domestic Mail Service Standards
• Service Delivery Calculator

 

PDF | HTM
PDF | HTM

Coming Soon: Web Tools 2.0 will introduce Authentication, Manifest Upload, and PTS Extract Download services. Please contact WebTools@usps.gov for more information.

• Authentication API RTF
• Manifest Upload API RTF