We're working on that! Many sandboxes exist, including our own, Greywall. It integrates with our proxy, Greyproxy, which handles TLS interception and reconstructing LLM conversations, plus features like credential swapping. We currently have a PR for middlewares we can test; things like intent classification to catch conversation derails, PII redaction, etc.

It's open source, check out greywall.io // github.com/greyhavenhq/greyproxy // github.com/greyhavenhq/greywall