How do I validate a license key with ValidonX?

Send a POST request to /api/v1/integration/licenses/{licenseKey}/validate with your X-API-Key header. The response includes valid (boolean), license status, expiry date, and entitlements as a flexible JSON key-value object.

ValidonX is a multi-tenant SaaS licensing platform that provides license key validation, device activation tracking, entitlement enforcement, and usage metering via a REST API. Software vendors use it to manage licensing for their products.

How do ValidonX entitlements work?

Entitlements are a flexible JSON key-value store on each license. You define whatever keys make sense for your product (e.g., {"plan": "pro", "domains": 5, "api.access": true}). They are returned in the license validation response and can also be checked via the /entitlements/check endpoint.

What programming languages does ValidonX support?

ValidonX provides a REST API that works with any language. Official SDK examples and copy-paste client classes are provided for PHP, JavaScript/Node.js, Python, and cURL. The API uses standard JSON over HTTPS.

How much does ValidonX cost?

ValidonX offers a free Starter tier (1 product, 100 license keys, 10,000 API calls/month), a Pro tier at $49/month (5 products, unlimited keys, 100,000 API calls/month), and custom Enterprise pricing with unlimited everything and dedicated database.

ValidonX Docs

ValidonXDeveloper Documentation

License validation, activation tracking, entitlement enforcement, and usage metering for your software products.

License Validation

Validate license keys via a single API call. Get status, expiry, and entitlements in one response.

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Device Activations

Track installations and enforce activation limits per license with device fingerprinting.

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Entitlements

Flexible key-value entitlements on every license. Gate features by plan, set numeric limits, control access.

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Usage Metering

Record usage events and enforce quotas. Track API calls, storage, or any custom metric.

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Webhooks

Receive real-time notifications when licenses change, activations occur, or usage thresholds are hit.

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Security

HMAC-signed license keys, API key authentication, rate limiting, and per-tenant data isolation.

Quick Links

I want to...	Go here
Validate a license key in 5 minutes	5-Min Quickstart
See the full API with all endpoints	Integration API Overview
Copy-paste a PHP or JS client class	Developer Quickstart
Understand entitlements and feature gating	Entitlements Guide
Set up webhooks	Webhook Guide
Look up an error code	Error Codes
Download the OpenAPI spec	OpenAPI Spec