The Postman agent overcomes the Cross-Origin Resource Sharing (CORS) limitations of browsers, and facilitates API request sending from your browser version of Postman.
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.
For macOS 10.11 (El Capitan) and later
For Windows 7 and later
For Ubuntu 14.04 and later, Fedora 24, Debian 8 and later
You can now access Postman through your web browser. Simply create a free Postman account, and you're in.