Chomper looks very interesting, and thanks for mentioning mitmproxy. I’ll do a quick tweet about it from the @mitmproxy Twitter account - let’s see if we can drive a few more users your way.
We really want to encourage tools like this, so please do let us know if there’s anything you feel we can do to make your life easier. The last release saw a huge number of improvements to the addon mechanism, and I’m on the lookout for mitmproxy-based projects that could be the first flagship examples of the new capabilities. I wonder if Chomper might fit the bill here - structuring it as an addon would mean, for instance, that you wouldn’t have to fork off a separate mitmdump process, and would make a number of other things simpler. To be clear, I’m not suggesting making your users install mitmproxy then install Chomper as an addon - your distribution and the user perspective would stay the same. If you’d be interested in exploring this direction, hit me up on Slack. I’d be happy to help.