Tracking · head-to-head
Correios vs WhereParcel
Correios exposes a REST API suite covering package tracking (Rastro), address lookup (Busca CEP), shipping cost (Preço), and delivery-time estimates (Prazo) for Brazil's national postal service. Access is gated behind a commercial shipping contract rather than public self-serve signup, with keys issued and validated through the CWS (Correios Web Services) portal under a Meu Correios login. A 2026 security tightening now restricts tracking queries to parcels tied to the querying contract, closing off third-party lookups of packages a caller didn't send.
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.
| Correios | WhereParcel | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | paid | paid |
| Formats | JSON | JSON |
| CORS | no | yes |
| HTTPS | Yes | Yes |
WhereParcel supports CORS, while Correios doesn't — pick WhereParcel for direct browser calls.