License management
for modern software

GATRYL handles license generation, domain locking, activation limits, and Stripe billing - so you can focus on building your product.

// Validate a license in one request const res = await fetch("https://license.fastflowtech.ai/v1/validate", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ key: "ak_myproduct_abc123", origin: window.location.hostname, }), }); const { valid, jwt, features } = await res.json();

Everything you need

From key generation to real-time enforcement - batteries included.

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License Generation

Auto-generate unique license keys per product. Keys embed the product ID for fast validation without database lookups on the hot path.

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Domain Locking

Lock licenses to specific domains with wildcard support. Prevents unauthorized use on unlicensed origins. Localhost always allowed for development.

Real-time WebSocket

Push JWT updates and revocations to connected clients instantly. No polling required - changes take effect within seconds across all instances.

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Stripe Auto-provisioning

Stripe checkout completes, customer + license are created automatically. Support for subscriptions, renewals, and cross-sell flows out of the box.

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Activation Limits

Limit how many unique domains can activate a single license. Track activations per domain with IP and user agent details for audit trails.

Trial Support

Issue time-limited trial licenses that auto-expire. Trial status included in JWT for feature gating. Background service handles expiry transitions.

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Outbound Webhooks

Get notified when licenses are created, updated, suspended, or expired. HMAC-SHA256 signed payloads for secure integrations with your backend.

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Admin Dashboard

Built-in dashboard with license stats, validation analytics, activation tracking, and top domains. Dark theme, responsive, zero dependencies.

Simple pricing

Start free, scale as you grow.

Starter

Free
  • Up to 3 products
  • 100 licenses
  • Domain locking
  • Real-time WebSocket
  • Validation analytics
  • Admin dashboard
Get Started

Ready to ship?

Add license management to your product in minutes. One API call to validate, one webhook to provision.

Get Your API Key