# Usage
Scalpel allows you to programmatically intercept and modify HTTP requests/responses going through Burp, as well as creating custom request/response editors with Python.
To do so, Scalpel provides a Burp extension GUI for scripting and a set of predefined function names corresponding to specific actions:
match: Determine whether an event should be handled by a hook.request: Intercept and rewrite a request.response: Intercept and rewrite a response.req_edit_in: Create or update a request editor’s content from a request.req_edit_out: Update a request from an editor’s modified content.res_edit_in: Create or update a response editor’s content from a response.res_edit_out: Update a response from an editor’s modified content.
Simply write a Python script implementing the ones you need and load the file with Scalpel Burp GUI: 
# 💡 To get started with Scalpel, see First steps
# Further reading
Learn more about the predefined function names and find examples in the Features category.