TGEI Semi Headless can fully or partially disable the frontend of Wordpress for headless Wordpress sites.

Too Good Enterprises Inc.

A typical WordPress site is comprised of a frontend and a backend. The front end is what your visitors and is affected by the themes of WordPress. The back end is what editors and administrators use to edit the content of the website.
A headless WordPress website disables the front end of wordpress and by redirecting all requests to another frontend that been set up to replace the wordpress frontend.
TGEI Semi Headless provides a hybrid approach which enables the frontend of WordPress for allowed posts and pages while redirecting blocked posts and pages to the other frontend.
<h4>Semi Headless Examples</h4>
Online Store
You install an e-commerce plugin to turn your wordpress into an online store. However, you may want to display your products in such a way that it does not fit well with the WordPress templating engine, so you decide to go headless with your own templating engine. But you don’t want to reimplement every feature of the store such as cart management and checkout, so you use TGEI Semi Headless to disable all frontend pages except the cart and checkout pages.
Blog
You have a travel blog where you make frequent posts about your trips. You use an image gallery plugin to manage the various image galleries of your trips. You decide to go headless to speed up your website. However, you don’t want to use another image gallery plugin, so you use TGEI Semi Headless to disable all the frontend pages except the image gallery pages.
<h4>Features</h4>
Control What Is Allowed or Blocked
The following is can be toggled to be allowed or blocked:
<ul>
<li>individual posts and pages</li>
<li>works with custom post types</li>
<li>archive pages of taxonomies such as categories and tags</li>
<li>author archive pages</li>
<li>search result pages</li>
<li>home page</li>
</ul>
Multiple Ways to Set Block Status
Toggle the block status via:
<ul>
<li>the gutenberg post/page editor</li>
<li>the quick editor</li>
<li>the bulk action menu</li>
</ul>
404 Redirect
Redirect WordPress 404 errors to your headless site’s 404 error page to maintain consistency.

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