Logout user using WP REST API WordPress Custom Endpoint

gistfile1.txt

/**
 * Head to https://wp-oauth.com for more info on user authentication and custom login and out solutions
 * for WordPress
 */
add_action( 'rest_api_init', function () {
	register_rest_route( 'wpoauthserver/v1', '/logout/', array(
		'methods'             => 'GET',
		'callback'            => 'wp_oauth_server_logout'
	) );
} );

function wp_oauth_server_logout() {
	wp_logout();
	wp_redirect('https://redirect-location.com');
	exit;
}

// Call https://site.com/wp-json/wpoauthserver/v1/logout/

myplugin can be anything you need it to be. Typically this is the custom name for your custom API.

Be sure to change the redirect URL in the wp_redirect function