Was looking for something else unrelated but swatch engine took me elsewhere. Bonus

It’s been in the site for a while. If you think it’s be helpful, please translate it. I can send you the original figma file if that would help?

Dont know but OK it says...

The recipient's lnurl server will receive this zap request and validate it. See Appendix C for details on how to properly configure an lnurl server to support zaps, and Appendix D for details on how to validate the nostr query parameter.

If the zap request is valid, the server should fetch a description hash invoice where the description is this zap request note and this note only. No additional lnurl metadata is included in the description. This will be returned in the response according to LUD06.

On receiving the invoice, the client MAY pay it or pass it to an app that can pay the invoice.

Once the invoice is paid, the recipient's lnurl server MUST generate a zap receipt as described in Appendix E, and publish it to the relays specified in the zap request.

Clients MAY fetch zap receipts on posts and profiles, but MUST authorize their validity as described in Appendix F. If the zap request note contains a non-empty content, it may display a zap comment. Generally clients should show users the zap request note, and use the zap receipt to show "zap authorized by ..." but this is optional

https://github.com/nostr-protocol/nips/blob/master/57.md

I know that Semisol did something once. I am not them. We'll find out I guess