How to Set Base URL Variable in Postman for APIs

To set the base_url variable in Postman for APIs, follow these steps:

1. Open Postman and create a new request.
2. Click on the 'Settings' icon in the top right corner of the window.
3. In the 'Settings' window, click on the 'Variables' tab.
4. Click on the 'Add variable' button.
5. Enter a name for the variable (e.g., 'base_url') and the value of the base URL for your API.
6. Click 'Save' to save the variable.
7. In your request, replace the URL with the variable name (e.g., '{{base_url}}/api/users').
8. Click 'Send' to make the request using the base URL variable.