Rajat

This Plugin Create a options which can provide ability to disable all or particular routes for json api.This plugin 
help to restrict the use of public credentials of website.This will protect the data such as users details of wordpress 
etc

Restrict Json Rest Api

Plugin to restrict json rest api, which you want to restrict to use from outside

aiyaz Khorajia

JSON API DELETE USER extends the JSON API Plugin with a new Controller to delete user with meta data.
<h3>Documentation</h3>
<ul>
<li>
You need to create nonce to delete user, nonce can be created by calling http://localhost/api/get_nonce/?controller=user&method=delete_user_with_meta
</li>
<li>
You can then use ‘nonce’ value to delete user.
</li>
</ul>
= Method: delete_user_with_meta=
You can find example.php file to understand delete user api call via curl.
http://localhost/wordpress/api/user/delete_user_with_meta?email=example@domain.com

JSON API Delete User

Delete User with meta details add-ons for JSON API

Restrict Json Rest Api vs JSON API Delete User