I can't speak directly to the authentication domain but I have used meander very successfully for complex pattern matching such as rewriting SQL (in honey format)

I'd be careful of ordering meander match clauses to ensure that you don't end up inadvertently matching and thus granting access with you shouldn't.

If your data structure is complex, this can be a bit hard to get exactly right. However, if the data structure is straightforward (even if it is recursive), meander is good fit

I'll try a POC and see how it looks

I think our data is on the simple end of the spectrum

@UJF17G3T9 If you’re comfortable looping others in for feedback/support, drop a gist, etc. 👍

One additional bit: Most of my "over matching" problems are due to inappropriate use of m/$ . I start out thinking, recursively matching will save me a bunch of typing. I end up thinking, why did I ever think that was a good idea!

I love m/$ for rummaging through data I’m unfamiliar with.

I've thought about an extension to m/$ that indicates a "recurse no deeper" pattern

something like the top-down-until strategy

Yes!