Working With Breakpoints
In Proxy.app you can create your own custom breakpoint using the breakpoint predicate editor. A breakpoint is a special mechanism which will put the proxy into interception mode for the request that match the specification.
Click on the Add Breakpoint button - This action will open the breakpoint predicate editor.
Configure the breakpoint - Select the properties of the breakpoint. Set the breakpoint name. Breakpoints with the same name are allowed. Press the save button.
Switch on the breakpoint - You can toggle the breakpoint by clicking on the button next to the breakpoint name. Disabled breakpoints will not intercept requests.
Edit the breakpoint - You can edit the breakpoint by double-clicking on its name.
Delete the breakpoint - Delete the breakpoint by clicking on the "Delete Breakpoint" button.