StackedLogic

Posted on Jul 3

Building a Multi-Carrier Tracking API After USPS Tightened Tracking Data Access

#api #softwaredevelopment #restapi #warehouse

USPS Tracking Has Become More Difficult—So I Built a Simple Multi-Carrier Tracking API

If you're building an ecommerce system, warehouse management tool, or any application that needs shipment tracking, you've probably run into a growing problem:

Tracking packages across multiple carriers is unnecessarily complex—and USPS tracking has become harder to access in recent years.

USPS has strengthened its tracking data access policies, which has made it more difficult for small developers and businesses to integrate reliable USPS tracking without additional restrictions or higher-cost services.

At the same time, most applications still need to support multiple carriers like:

USPS
UPS
FedEx
DHL
LaserShip / OnTrac
GoFor
Roadie
UniUni

Each carrier has different APIs, response formats, authentication methods, and limitations.

So I built a simple Multi-Carrier Tracking API that solves this with one endpoint and one consistent JSON response.

🚀 Available on RapidAPI

You can access the API here:

👉 https://rapidapi.com/c2wtechnology/api/trackingpackage

Official documentation:

👉 https://c2wtechnology.com/tracking-api/

It includes a Basic (Free) plan so you can start testing immediately.

🔗 One Simple API Call

After subscribing on RapidAPI, you can track any supported carrier using a single request:

GET https://trackingpackage.p.rapidapi.com/TrackingPackage?trackingNumber=9200190312809701574398

Just pass the tracking number—no need to specify the carrier.

The API automatically detects the carrier and returns a unified response format.

📦 Example Response (Full Schema)

Below is the actual response returned by the API (including all fields, even when null or empty):

{
    "TrackingNumber": "9200190312809701574398",
    "Delivered": false,
    "Carrier": "USPS",
    "ServiceType": "USPS - USPS Ground Advantage",
    "PickupDate": "",
    "ScheduledDeliveryDate": null,
    "ScheduledDeliveryDateInDateTimeFromat": null,
    "StatusCode": "InTransit",
    "Status": "InTransit",
    "StatusSummary": "Processed through USPS Facility",
    "Message": "",
    "DeliveredDateTime": "",
    "DeliveredDateTimeInDateTimeFormat": null,
    "SignatureName": "",
    "DestinationCity": "",
    "DestinationState": "",
    "DestinationZip": "",
    "DestinationCountry": "",
    "EventDate": null,
    "ShipDate": null,
    "OriginCity": "",
    "OriginState": "",
    "OriginZip": "",
    "OriginCountry": "",
    "AccessControl": "",
    "StandardTransit": "",
    "TrackingDetails": [
        {
            "EventDateTime": "2026-07-03 02:28:00",
            "Event": "Processed through USPS Facility",
            "EventAddress": "CITY OF INDUSTRY CA DISTRIBUTION CENTER ",
            "State": null,
            "City": "CITY OF INDUSTRY CA DISTRIBUTION CENTER",
            "Zip": "",
            "EventDateTimeInDateTimeFormat": "2026-07-03T02:28:00"
        },
        {
            "EventDateTime": "2026-07-03 01:13:00",
            "Event": "Accepted at USPS Origin Facility",
            "EventAddress": "ONTARIO CA",
            "State": "CA",
            "City": "ONTARIO",
            "Zip": "",
            "EventDateTimeInDateTimeFormat": "2026-07-03T01:13:00"
        },
        {
            "EventDateTime": "2026-07-01 00:00:00",
            "Event": "Pre-Shipment Info Sent to USPS, USPS Awaiting Item",
            "EventAddress": " ",
            "State": null,
            "City": null,
            "Zip": "",
            "EventDateTimeInDateTimeFormat": "2026-07-01T00:00:00"
        }
    ]
}

🧠 Why a Unified Tracking API Matters

Each carrier typically returns different formats and structures:

Different status names
Different event structures
Different date formats
Different location fields

This API normalizes everything into a single consistent schema, so developers only need to integrate once.

Even when data is missing, fields are still included (as null or empty strings), which makes parsing predictable and safe.

💡 Key Features

One API for multiple carriers
Automatic carrier detection
Standardized JSON response
Full tracking history included
Works across USPS, UPS, FedEx, DHL, OnTrac, Roadie, GoFor, UniUni
Simple REST integration
Free plan available

💰 Pricing (Competitive Alternative)

One of the goals of this API is to provide a more affordable alternative to existing tracking platforms.

Compared to well-known providers like:

AfterShip
TrackingMore

This API is positioned as a lower-cost option, especially for developers and small-to-medium businesses that want:

Predictable pricing
Simple usage-based API access
No heavy platform overhead

Without sacrificing core tracking functionality.

🎯 Why I Built It

I originally built this API for internal use in my warehouse and order management system.

The goal was simple:

Replace multiple carrier integrations with one unified API.

After simplifying my own workflow, I decided to make it available to other developers via RapidAPI.

📌 Try It Out

If you're working on:

Ecommerce platforms
Shipping dashboards
ERP / WMS systems
Order tracking pages
Marketplace integrations

You can try the free tier here:

👉 https://rapidapi.com/c2wtechnology/api/trackingpackage

Documentation: