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RevAddress

Open-source USPS v3 REST API SDKs — Python, Node.js, PHP. Drop-in replacements for deprecated USPS Web Tools packages.
README.md

RevAddress

Production USPS v3 REST API for developers. Address validation, package tracking, rate shopping, label creation, and service standards — all through a single, modern JSON API.

Why RevAddress

  • Direct USPS v3 access — No middlemen, no per-label fees. Flat monthly pricing.
  • BYOK (Bring Your Own Keys) — Use your own USPS credentials. No vendor lock-in.
  • SDKs for every stack — Python, Node.js, PHP. Drop-in packages on PyPI, npm, and Packagist.
  • USPS-approved — Registered application (REVASSEROSSHIP). 293 tests. 41 API routes.
  • Rate limit handling — Built-in token management and retry logic so you don't have to.

SDKs

Language Package Install
Python usps-v3 pip install usps-v3
Node.js usps-v3 npm install usps-v3
PHP revaddress/usps-v3-php composer require revaddress/usps-v3-php

Quick Links

Support

support@revaddress.com | Status Page

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