Tracking · head-to-head
Correios vs WhatPulse
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.
WhatPulse is a desktop client that measures keystrokes, mouse clicks, and application usage, publishing the results through a companion Web API for personal dashboards and community leaderboards. Every request now needs a Bearer-token personal API key created on the account's API settings page — the desktop client works without one, but the Web API no longer does. Core statistics are free to query; a Premium subscription unlocks deeper productivity insights and unlimited history.
| Correios | WhatPulse | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | paid | freemium |
| Formats | JSON | JSON |
| CORS | no | yes |
| HTTPS | Yes | Yes |
WhatPulse is freemium, while Correios is paid — WhatPulse is the cheaper way in.