USPS Web Tools Migration API for January 2026

USPS Web Tools API Retirement – Keep Your X-Cart 4 Shipping Working

As announced by USPS, the Web Tools API platform will be retired on January 25, 2026. If your X-Cart 4 store still relies on the old USPS Web Tools system, real-time shipping rates will stop working unless you migrate to the new USPS API platform.

To prevent service disruptions, USPS now requires all users to migrate to their new USPS APIs via the USPS Developer Portal.

We’ve built a dedicated X-Cart 4 USPS Migration Module that handles this transition for you — quickly, safely, and without breaking your store.

What This Module Does

This module upgrades your X-Cart 4 store to use the new USPS API system, ensuring:

• Real-time USPS shipping rates continue to work
• No checkout disruptions for customers
• Full compliance with USPS requirements
• No forced platform upgrade
• No custom development needed

Your store stays operational, compliant, and future-proof.

Key Features

• USPS API Migration for X-Cart 4: Replaces the retired Web Tools API with the new USPS API system.
• Real-Time Shipping Rates: Keeps USPS live pricing fully functional at checkout.
• Compatible with X-Cart 4.x: Designed specifically for legacy X-Cart installations.
• Simple Installation: No complicated server changes or platform migration required.
• Secure & USPS-Compliant: Uses the official USPS Developer Portal API structure.
• Tested & Production-Ready: Built for real stores, not experimental setups.

Why You Need This

If you do nothing:

• USPS rates will stop appearing
• Customers won’t see shipping prices
• Checkouts may fail
• Orders could be abandoned
• Revenue will be lost

This is not optional — USPS is retiring the old system. Our module ensures your store keeps working without forcing you to migrate to a new e-commerce platform.

Ideal For

• X-Cart 4 store owners
• Businesses using USPS real-time shipping
• Stores that cannot upgrade to newer X-Cart versions
• Merchants who want a fast, affordable solution
• Anyone who wants zero downtime

What You Get

• The X-Cart 4 USPS Migration Module
• Installation instructions
• Configuration guide
• Compatibility support

Note: USPS API credentials are obtained via the USPS Developer Portal.

Why Choose Our Solution?

• Built specifically for X-Cart 4
• Focused only on USPS compliance
• No unnecessary features
• No risky platform upgrades
• Cost-effective vs custom development

This module exists to solve one critical problem — and it does it reliably.

Keep Your Store Running Past 2026

USPS has set a firm retirement date. Waiting until the last minute risks downtime and lost sales.

Install the USPS Migration Module today and ensure your X-Cart 4 store remains fully operational.