Yeah, eventually I'd love to be able to do scripting etc, but it's dramatically more complicated. There's the language debate to start with. E.g. Fiddler uses

Yeah, eventually I'd love to be able to do scripting etc, but it's dramatically more complicated. There's the language debate to start with. E.g. Fiddler uses JScript.NET, which isn't exactly the language of choice nowadays. Realistically whatever language you choose, you have some big problems. Different groups want different tools, some want external packages, some want data stores, it's a whole thing. It's a good point though, and I'd love to solve it. I've added an issue to my feedback repo to look at it: https://github.com/httptoolkit/feedback/issues/37 https://github.com/httptoolkit/feedback/issues/37. If you've got a minute, could you comment there and record the kind of scripts you'd like to write? I'm not really sure what emulating internal authenticating proxies means in practice, for example. Are you rewriting requests to inject auth params, or validating outgoing requests, or something else?