title: What is the proper content type for one-word boolean REST resource?
body: <p>I'm building an API, and for the most part there will be JSON and HTML content there. But a few very specific endpoints only render <code>true</code> or <code>false</code>, and also accept <code>true</code> or <code>false</code> in POST. That is the entire body of the request or response.</p>
  
  <p>What would be the correct content-type header for this resource?</p>
  
  <p>I'm using <code>text/plain</code>. <code>application/text</code> also sounds ok, though it I haven't found it used anywhere else (is it?)</p>