#nostr already has a form of soft vibe checking available

there are several GPT based bots you can call to generate a vibe-check summary of a user's posts, thus essentially allowing you to verify their vibe yourself

one example is nostr:npub1dr6x2yxm5rnq8ltte70ezcsdz0t7lgaxavp0gsj5qlp98j8rdahq4ggg5e