Tracking · head-to-head
UPS vs WhereParcel
UPS's REST APIs cover package tracking, rating, address validation, and label creation, authenticated via OAuth 2.0 client-credentials bearer tokens issued by the developer portal — the legacy Access Key scheme was retired for all UPS REST APIs in 2024. Calls carry no separate API fee: access is free for UPS account holders, who instead pay UPS directly for the shipments and services the calls represent.
WhereParcel is a unified parcel-tracking API that normalizes shipment status across 64+ carriers — including USPS, UPS, FedEx, DHL, and TNT — behind a single REST endpoint and webhook system, so integrators don't need a separate connector per carrier. Every request is authenticated with a Bearer API key and answered with full CORS support for browser-side calls, typically in 500ms for cached lookups and 2-3 seconds for live carrier queries. There's no free-forever tier: plans start at $49/month for 10,000 requests, each with a 7-day free trial.
| UPS | WhereParcel | |
|---|---|---|
| Authentication | OAuth | API Key |
| Pricing | free | paid |
| Formats | JSON | JSON |
| CORS | no | yes |
| HTTPS | Yes | Yes |
UPS is free, while WhereParcel is paid — UPS is the cheaper way in.