Keylance / Developer documentation

Integrate Keylance. Keep control.

Validate, activate and manage software licenses from Unreal Engine, PHP, JavaScript or any environment capable of sending HTTP requests.

Start integration ↓ Open dashboard ↗

START

Quick start

Keylance is a lightweight license management system. Use the REST API directly or use the Unreal Engine SDK, which handles the same verification flow for you.

License managementREST APIUnreal Engine SDKHTTPS

Never expose a private administrative key inside a public client build. Use project keys for runtime verification.

Base URL

https://aukkeproduction.fr/wp-json/keylance/v1

Header	Value
`X-Keylance-Key`	`<API_KEY>`
`Authorization`	`Bearer <API_KEY>`

GET

Verify a license key

Validate a user API key against a project key. The response describes the current protection, activation and expiration state.

Endpoint

https://aukkeproduction.fr/Keylance_Api/VerifKey.php?key=API_KEY&project=PROJECT_KEY

Parameter	Description
`key`	Your user API key
`project`	The unique project license key

cURL

curl "https://aukkeproduction.fr/Keylance_Api/VerifKey.php?key=abc123&project=def456"

JSON

Response structure

Successful response

{
  "success": true,
  "is_protected": true,
  "active": true,
  "expiration_date": "2025-12-31"
}

Field	Description
`success`	Whether the request was valid
`is_protected`	Whether the project uses Keylance protection
`active`	Whether the license is currently active
`expiration_date`	Expiration date used for online and offline checks

REST

License routes

Create a key

POST /keys

POST /keys
{
  "project_name": "MyProject",
  "expiration_date": "2025-12-31"
}

Activate a key

POST

POST /keys/{project_key}/activate

Deactivate a key

POST

POST /keys/{project_key}/deactivate

Change expiration date

POST

POST /keys/{project_key}/expire
{
  "expiration_date": "YYYY-MM-DD"
}

CODE

Integration examples

Unreal Engine C++

C++

FHttpModule::Get()
  .CreateRequest()
  ->SetURL("...VerifKey.php?key=XXX&project=YYY");

PHP

$response = file_get_contents(
  "https://aukkeproduction.fr/Keylance_Api/VerifKey.php?key=XXX&project=YYY"
);
$data = json_decode($response, true);

if ($data["success"] && $data["active"]) {
  // Access granted
}

JavaScript

fetch("https://aukkeproduction.fr/Keylance_Api/VerifKey.php?key=XXX&project=YYY")
  .then(response => response.json())
  .then(data => {
    if (data.success && data.active) {
      console.log("Access granted");
    }
  });

SAFETY

Errors and fallback

success = false: invalid or unknown key.
active = false: the license is disabled.
Expired expiration_date: deny access or use your offline policy.
Server unreachable: rely on securely stored local data for the allowed fallback duration.

The SDK is the fastest native route for Unreal Engine. The REST API is universal and can be used from any language or framework.

SUPPORT

Stripe, limits and support

Stripe webhooks can activate, deactivate or extend licenses automatically when a subscription changes. Store the project_key in Stripe metadata to link the customer to the correct license.

No rotation requiredNormal usage without rate limitsHTTPSEncrypted storage

Need integration help? Contact jean@aukkeproduction.fr.