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

One plan. Everything included.

Ready to ship?

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

Get Your API Key