Documentation

Learn how to set up Blackwalnut, manage your applications, and issue cryptographically signed licenses to your customers.

Create applications with auto-generated RSA key pairs for signing licenses.

Issue JWT tokens with tiers, features, and expiration. Verify online or offline.

Manage customers and link them to licenses. Store metadata and external IDs.

Full REST API documentation with OpenAPI spec. Manage everything programmatically.

Key Concepts

Licenses are signed with RSA-SHA256. The public key can verify tokens offline without contacting your server.

Define pricing tiers (Free, Pro, Enterprise) and feature flags. Each license includes its tier and enabled features in the JWT payload.

Private keys are encrypted at rest using AES-256-GCM. Only your server can sign licenses.

Deploy Blackwalnut and issue your first license in minutes.