GitHub :- Here I am taking example of GitHub Account for API authorization So First We nedd to login our GitHub account to generate authentication token. Account ( Profile Icon )-> Settings -> Developer Settings -> Personal Access Token -> Generate New Token -> Add Note ex "demotoken" , Select expiration, Tick Repo and delete_repo options > Click on generate token button. Copy and paste token somewhere. To get GitHub API Url , Follow given below steps Go to the google search and search "github rest api" Open "https://docs.github.com/en/rest" Click on references -> Repositories Then we can list of repo option in left side ex "Create a repository for the authenticated user", "Get a repository ","Update a repository", " Delete a repository" ex api url " https://api.github.com" and End point of POST is "/user/repos" WE can create Envirnoment variable for api url Collection-> Edit -> variable We can use it following way , Postman Create a collection and POST , GET and DELETE Requests Note:- We can create Envrinoment varible for token GET POST DELETE POSTMAN Execution