This is cool! One problem I've run into with Webhooks in the past is not being able to audit every call after the fact. I want to be able to see which endpoints were called, when, with what payloads (logs scrubbed of PII etc.). This information is invaluable in responding to support queries.
We have the ability to audit and inspect past calls. We don't yet scrub PII, though we have a few features down the pipeline that will enable just that. Thanks for your comment!
Good luck!