title: Marvel API and Insomnia (or Postman): how do I pass the hash value that's required?
body: <p>I'm a relatively new Javascript programmer and I'm experimenting with the Marvel API (I need to access the images for a project) and having a little trouble wrapping my head around the requirements.</p>
  
  <p>As I understand it, you need to pass a <code>hash</code> and a <code>ts</code> (timestamp, I presume), when calling the API from a server-side app.  But I don't see in the documentation that this is required when using a client-side app.</p>
  
  <p>I tried to do some basic endpoint testing with Insomnia and I receive the message <code>"You must provide a hash."</code>.  Apparently I need the <code>hash</code> for client-side access as well?</p>
  
  <p>I have seen some NodeJS examples that show you how to generate the <code>hash</code> (for example, <a href="https://www.raymondcamden.com/2014/02/02/Examples-of-the-Marvel-API" rel="noreferrer">https://www.raymondcamden.com/2014/02/02/Examples-of-the-Marvel-API</a>), but nothing for the client side (that I could find).  I also don't know how I would generate this within Insomnia (or Postman).  Any pointers in the right direction would be appreciated.</p>
  
  <p>I'd also like to ask what role the <code>authorized domains</code> play when accessing the Marvel API from a local machine.  Do I need to add <code>localhost</code> to this list?</p>
  
  <p>Thanks for any help!</p>