To setup the authentication of a request click on the  "auth" tab

Several type of authentication are supported

1. Basic Authentication 
   - Enter a username and password
   - {username}:{password} will be base64 encoded and added to the Authorization header
   
   
    
2. NTLM Authentication
   - Enter a username, password and domain.  Alternatively, you could also use the current logged-in credentials by checking "Use default credentials"
   
   
    
3. Bearer Token
   - Enter the token value. This will be the value of  the "Bearer "HTTP header.
   
   
    
4. API Key
   - Enter the API Key/Value (presumably from another service).  You can choose whether these will be added into the HTTP headers or as query parameters in the request URL
   
   
   
   
   And lastly, you can also choose "None" i.e. no authentication credentials will be sent over.