Each rest call will have below compulsory request parameter in header.
Bearer (Access Token)
JSON Web Tokens Authorization header using the Bearer scheme (Example: 'Bearer 12345abcdef')
Name: Authorization
In: header
NOTE: All APIs are considered as POST method. All the input as well as output data type will JSON formatted.
REST RESPONSE PARAMETERS
The response comes as JSON object and response table in each rest description explains you about JSON object parameters ->Parameter with in JSON object will be in String format.