This forum is now Read-Only. The Magento Community Forum is scheduled to close permanently on December 31, 2025. Please save any necessary information before this date. Join us on Slack for continued engagement!
I did not find any way to find to disable completely. But there is a way to restrict access. WebapiSecurity enables access management of some Web API resources. If checkbox is enabled in backend through: Stores -> Configuration -> Services -> Magento Web API -> Web Api Security then the security of all of the services outlined in app/code/Magento/WebapiSecurity/etc/di.xml would be loosened. You may modify this list to customize which services should follow this behavior. By loosening the security, these services would allow access anonymously (by anyone).