I will fix rest API authentication, cors, webhook and integration issues

Is your REST API connected but not working correctly?

Maybe you're getting authentication errors, your webhook isn't firing, CORS is blocking requests, or data isn't syncing between systems.

I help troubleshoot and fix broken REST API integrations.

I can fix:

• REST API errors (400, 401, 403, 404, 500)
• Authentication, API keys and token issues
• CORS and cross-origin problems
• Webhook failures and incorrect payloads
• JSON request/response and data mapping issues
• Data synchronization problems
• Third-party API connection errors
• Endpoint, parameter and header issues
• Backend API integration bugs

I don't just explain the error. I investigate the request, response, authentication and data flow to identify where the integration is breaking, apply the appropriate fix and test the result.

Whether you're connecting a website to a third-party service, sending data through webhooks, or connecting two systems through REST API, I'll help get the integration working correctly.

Please provide your API documentation, error details/logs, relevant code or setup and explain what happens now versus what you expect.

For complex projects involving multiple APIs or workflows, message me before ordering.