API discoveries

Let's Count vs AfterShip vs Correios vs Mapbox: Tracking API Comparison

Four tracking-category APIs serve fundamentally different purposes—from simple counters to global logistics, Brazilian postal integration, and location intelligence. This comparison covers their reported functions, authentication, scope, and evaluation considerations based on directory records observed in September 2026.

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Reported purposes and functional categories

Although all four appear under a "Tracking" category, their described functions diverge sharply. Let's Count provides a minimal counter service—create, retrieve, update, increment, and decrement counters—with no authentication required. AfterShip targets e-commerce logistics: an API to "update, manage and track shipment efficiently" across carriers. Correios integrates specifically with Brazil's postal service to "provide information and prepare shipments using Correio's services." Mapbox offers "Maps, directions, geocoding" for location-based applications. The shared category label obscures these distinct domains: generic counting, multi-carrier parcel tracking, national postal integration, and geospatial platform services.

Authentication and access models

Access requirements differ across the set. Let's Count operates with "No auth," making it immediately callable but offering no access control. AfterShip, Correios, and Mapbox each require an API key. The directory records do not detail key provisioning flows, rate limits, or scopes for any of the three keyed services. For teams evaluating operational overhead, the absence of auth on Let's Count simplifies prototyping but precludes per-client quotas or revocation; the keyed APIs imply account registration and key management steps not described in the source records.

Geographic and carrier scope

AfterShip and Correios address shipment tracking but at different scopes. AfterShip's description implies multi-carrier coverage without naming specific carriers or regions in the record. Correios is explicitly bound to Brazil's national postal operator. Mapbox provides global geocoding and routing but does not track parcels. Let's Count has no geographic dimension. If the requirement is tracking Brazilian domestic parcels, Correios is the only listed integration for that carrier; for international multi-carrier tracking, AfterShip's description suggests broader coverage, though the record lacks carrier lists or country support details. Mapbox would complement either for address validation or route visualization, not for shipment status.

Integration considerations and observed limitations

The directory entries are sparse on technical specifics. No record documents response formats, webhook support, sandbox environments, or SLA commitments. Let's Count's no-auth model means any caller can modify any counter if they know its namespace—a significant limitation for production use without additional application-layer controls. AfterShip and Correios both require API keys but the records do not indicate whether they support test modes or provide mock data. Mapbox's description covers three large capability areas (maps, directions, geocoding) without indicating which endpoints or pricing tiers are included. Observation dates range from 2026-09-19 (Mapbox) to 2026-09-23 (AfterShip, Correios); Let's Count was observed 2026-09-20. These dates reflect directory capture, not service launch or version.

Next evaluation steps

To move beyond directory metadata, teams should: (1) Visit each provider's developer portal—linked in the records—to review authentication flows, rate limits, and endpoint documentation. (2) For AfterShip, confirm supported carriers and regions against your shipping lanes. (3) For Correios, verify coverage of specific Brazilian services (e.g., PAC, SEDEX) and any CPF/CNPJ requirements. (4) For Mapbox, determine which APIs (Geocoding, Directions, Map Matching) are needed and check token scopes. (5) For Let's Count, assess whether the lack of authentication and namespace isolation is acceptable or if a self-hosted counter (e.g., Redis) is preferable. (6) Compare pricing pages, which are not referenced in the directory records. (7) Test sandbox or trial credentials where available before committing to integration work.