Yourkit License Key New

Visit the official YourKit store. Upon successful payment (credit card, PayPal, or wire transfer), you receive an automated email from sales@yourkit.com.

If your development machine has no internet access:

After activation, verify the integration: yourkit license key new

This API endpoint handles the creation and validation of the license key.

File: controllers/licenseController.ts

import  Request, Response  from 'express';
import  LicenseService  from '../services/licenseService';
import  body, validationResult  from 'express-validator';
export class LicenseController 
  private licenseService: LicenseService;
constructor() 
    this.licenseService = new LicenseService();
/**
   * Feature: Add New YourKit License Key
   * POST /api/v1/licenses/yourkit
   */
  public addLicenseKey = async (req: Request, res: Response) => 
    // 1. Input Validation
    const errors = validationResult(req);
    if (!errors.isEmpty()) 
      return res.status(400).json( errors: errors.array() );
const  licenseKey, assignedTo  = req.body;
try 
      // 2. Business Logic (Validation & Storage)
      const result = await this.licenseService.addYourKitKey(
        key: licenseKey,
        owner: assignedTo
      );
if (!result.success) 
        return res.status(409).json( message: result.message );
// 3. Return Success Response
      return res.status(201).json(
        message: 'YourKit license key added successfully.',
        data: 
          id: result.id,
          status: 'active',
          createdAt: new Date()
);
catch (error) 
      console.error('Error adding YourKit license:', error);
      return res.status(500).json( message: 'Internal server error' );
;

File: services/licenseService.ts

interface LicenseData 
  key: string;
  owner: string;
interface ServiceResult 
  success: boolean;
  message: string;
  id?: string;
export class LicenseService
// Mock database function
  private async saveToDb(license: LicenseData): Promise<string> 
    // In a real app, use Prisma/TypeORM/Mongoose here
    // const newLicense = await db.licenses.create( data: license );
    return `license_$Date.now()`; // Return generated ID
/**
   * Validates the YourKit key format and persists it.
   * YourKit keys are typically long alphanumeric strings.
   */
  public async addYourKitKey(data: LicenseData): Promise<ServiceResult> 
    const yourKitRegex = /^[A-Z0-9]5-[A-Z0-9]5-[A-Z0-9]5-[A-Z0-9]5-[A-Z0-9]5$/i;
// Basic format validation (Adjust regex based on actual YourKit format)
    // Note: Real validation often requires calling YourKit's internal verification API
    // or checking the digital signature if available.
    if (!yourKitRegex.test(data.key)) 
      return  success: false, message: 'Invalid YourKit license key format.' ;
// Check for duplicates (Pseudo-code)
    // const exists = await db.licenses.findOne( key: data.key );
    // if (exists) return  success: false, message: 'License key already exists.' ;
const id = await this.saveToDb(data);
return  success: true, message: 'License saved.', id ;

Route Definition:

import  Router  from 'express';
import  LicenseController  from './controllers/licenseController';
import  body  from 'express-validator';
const router = Router();
const controller = new LicenseController();
router.post(
  '/licenses/yourkit',
  [
    body('licenseKey').notEmpty().withMessage('License key is required'),
    body('assignedTo').optional().isEmail().withMessage('Must be a valid email')
  ],
  controller.addLicenseKey
);
export default router;

YourKit stores license info in a hidden file. If the GUI fails, you can manually create a file:

Even with a valid key, you might encounter errors. Here’s how to resolve them: Visit the official YourKit store