Built for developers and businesses who demand more. KeyAux combines enterprise-grade security, powerful APIs, and seamless licensing to protect and monetize your software.
KeyAux is engineered with advanced features that scale with your business. From real-time license validation to sophisticated HWID locking, we give you the tools to protect your software and manage users at any scale.
Integrate KeyAux into your application in just a few steps. No complex setup, no confusing configuration — just powerful authentication that works.
Sign up and create your first app in the dashboard. Get your API keys instantly.
Create keys with custom masks, expiry, levels, and usage limits.
Use our Client API to validate licenses and authenticate users in your software.
KeyAux provides both a Client API for your end-user applications and a Seller API for managing licenses programmatically. Full REST API, webhook notifications, and comprehensive documentation.
// Initialize and validate a license key const response = await fetch('https://keyaux.caelen.workers.dev/api/1.2/', { method: 'POST', headers: { 'Content-Type': 'application/json', 'X-App-Secret': 'your_app_secret' }, body: JSON.stringify({ type: 'license', key: 'XXXX-XXXX-XXXX-XXXX', hwid: getHardwareId() }) }); const data = await response.json(); // { success: true, message: "License valid" }
Start free. Scale when you're ready. No hidden fees.
Everything you need to get started with authentication and licensing.
For developers and businesses who need advanced protection and scale.
Unlimited scale with dedicated infrastructure and white-label options.
KeyAux is an authentication and licensing platform for software developers. It allows you to protect your applications with license keys, manage users, track sessions, and prevent unauthorized access — all through a simple API and dashboard.
Your application sends a request to our Client API with the license key and optionally a hardware ID. KeyAux validates the key, checks expiry, usage limits, and HWID binding, then returns a response. The entire process takes milliseconds.
The Seller API lets you programmatically manage licenses, users, subscriptions, and variables. It's perfect for integrating with payment processors, Discord bots, or any automated system that needs to create and manage keys.
HWID (Hardware ID) locking binds a license key to a specific device. Once a key is activated on a machine, it cannot be used on another device — preventing key sharing and unauthorized distribution of your software.
Yes! KeyAux provides a KeyAuth-compatible Client API, so you can switch with minimal code changes. Our API supports init, login, register, license, and variable operations with the same request format.