This guide will walk you through how to install the OneTest extension in Burp Suite.
It’s compatible with both the Community and Professional editions.

🧰 Requirements¶

OneTest is written in Python, so before using it, you need to ensure that Jython is configured in Burp Suite.

💡 Already have Jython configured in Burp?
Skip directly to Step 3 – Install the OneTest Extension.

Step 1 – Download Jython¶

Jython is a Java implementation of Python, required for Burp to run Python-based extensions.

1) Go to the official Jython download page:
👉 https://www.jython.org/download.html

2) Download the Standalone version (e.g., jython-standalone-2.7.3.jar).
3) Save the .jar file somewhere easy to remember.

Step 2 – Set Up Jython in Burp Suite¶

Now that you have Jython, let’s configure it in Burp:

1) Open Burp Suite.
2) Go to the Settings -> Extensions tab :

3) In the Python Environment section, click Select file ….
4) Browse to the jython-standalone-2.7.3.jar file and select it.
5) Click Open.

Burp will now be able to run Python extensions.

⚠️ If Burp throws an error after selecting the file, make sure you downloaded the standalone JAR version (not the installer!).

Step 3 – Install the OneTest Extension¶

With Jython configured, let’s install the OneTest extension.

1) Go to the Extensions tab -> Installed.

2) Click on Add.

3) In the dialog:
- Extension Type: Python
- Extension file: Browse to the OneTest.py file.

4) Click Next.

If everything is configured correctly, the extension will appear in the active list.

OneTest is now successfully installed and ready to use in Burp Suite.