I think claim in wallet is for mobile use? I imagine it opens up a cashu compatible wallet. nostr:npub1mhcr4j594hsrnen594d7700n2t03n8gdx83zhxzculk6sh9nhwlq7uc226 would know best.

You need to paste an invoice to pay yourself basically.

All of this would need better UX for sure!

The long string is something you can copy into any cashu wallet and claim the nuts directly that way.