Documentation
The official API reference for System Locker.
Start here
Choose the Simple API when the licensing code runs on a trusted central server, such as a service your users connect to. Choose the Bedrock API for connected software living on someone else's machine, and choose Nightflyer when desktop software must remain available offline after its initial authorization.
Simple API Reference
Predictable, plaintext responses for the fastest setup.
Bedrock API Reference
Signed session authentication for connected software on user-controlled hardware.
Nightflyer API Reference
Secure offline authorization for desktop software, with device-held keys and time-limited leases.
Management API Reference
Manage systems, keys, variables, and security reads from your own server-side tools.
Server-side Variables API Reference
Read values that your software can use without a portal request.
SL-HWID Integration Guide
Fault-tolerant hardware identifiers for C++20 and .NET 8 applications.
Quicksilver API Reference
Production session authentication for existing integrations.
Basic terms
- System
- Your application as configured in the developer portal. Its 20-character system ID identifies requests for that application.
- License key
- A key you issue to a customer. Key-based APIs use it to identify the customer and their access.
- HWID
- A machine identifier used to apply your hardware-locking rules. Treat it as application data, not as a password.
- Program Hash
- An optional value you configure for a system. When set, authentication initializers must send the exact matching
digest.
Reference implementations
The following repositories are an excellent starting point for integrating the System Locker APIs.
Interactive API Explorer
Sign in or create a new developer account to test our APIs right here, live.