wait, NIP-65, NIP-42 and NIP-96, in that order of precedence

NIP-65 is critical for relay devs, NIP-42 is critical for payment and accounting/control of access, and NIP-96 needs NIP-42, probably isn't being specified well enough - to let you auth to a media host to push your content and have it associated with your identity and appear in your account page and count to your usage