Setting up API testing project

Web services are specific services that can be published and called over the Web by client applications. Katalon Studio supports functional testing of Web services. This topic provides an overview of how to setup Katalon Studio for Web service testing.

Proxy Settings

Proxy can be configured at Preferences > Proxy. These settings affect both WebUI and Web service test execution.



Field Description
Proxy Option Specify how Katalon Studio will deal with proxy

  • No Proxy: do not apply any proxy setup
  • Use system proxy configuration: proxy setup by local machine will be utilized
  • Manual proxy configuration: manually define information for proxy
Proxy Server Type Specify the type of the proxy server. Katalon Studio currently supports three types of proxy server: HTTP, HTTPS, and SOCKS
Address & Port The IP address and port of the proxy server
Authentication Users can specify the username and password to access the proxy server if required.


Certificate settings

Users may find their computers in a network that requires certification setup in order to access the Internet.

Katalon Studio supports the capability to bypass certificate validation so that users with a restricted network policy can work with Katalon Studio as usual. This setting can be found at Project > Settings > Network and it affects both WebUI and Web service testing.


External Libraries

You may use external libraries in your test project. Go to Project > Settings > External Libraries to add new or remove existing libraries for Katalon Studio. External libraries are stored in Katalon Studio’s Drivers folder.


  • Add: Click to add your external libraries. The selected libraries will be copied to Katalon Studio’s Drivers folder.
  • Remove: Click to remove existing libraries. They will be removed from Katalon Studio’s Drivers folder.

The added libraries can be imported and referenced in the Script View of Katalon Studio:



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