Postman Agent
The Postman agent overcomes the Cross-Origin Resource Sharing (CORS) limitations of browsers, and facilitates API request sending from your browser version of Postman.
Installing the Postman desktop agent
If you are using the Postman for Web, you also need to download the Postman desktop agent, a micro-application that runs locally on your desktop.
To learn more about the desktop agent, read the Introducing the Postman Agent blog post.
Postman on the web
You can now access Postman through your web browser. Simply create a free Postman account, and you're in.