Authentication & licensing,
built for shipping.
Skull Labs Auth is the drop-in identity layer for desktop, server, and game apps. Native SDKs in C++ and C#, live admin telemetry, and license keys you actually control.
curl -sX POST https://api.skulllabs.in/v1/sdk/login \
-H "content-type: application/json" \
-d '{ "apiKey": "slk_…", "license": "SKL-XXXX-XXXX-XXXX-XXXX" }'Everything you need. Nothing you Don't.
A real backend, real tooling, real docs. No magic, no lock-in, no surprise bills.
Three login modes
Username + password, username + password + license, or license-only. Set per project, switchable any time.
Native SDKs
First-class C++ and C# clients. Single header for C++, NuGet-ready for .NET. Sub-200ms login through our edge endpoint.
HWID locking
Optionally bind a license to one machine on first activation. Reset from the dashboard with a click.
Live infrastructure metrics
CPU, memory, disk, network — every server stat surfaced directly in the admin dashboard.
Dual-database persistence
Firestore for structured records, Realtime DB for live login events and presence. The right tool for each job.
Drop-in REST API
Every dashboard feature is also a documented REST endpoint. Build your own automation in minutes.
Pricing
Start free. Upgrade when you ship.
- — Unlimited projects
- — Unlimited logins
- — HWID locking
- — Custom license patterns
- — Priority support