genehack on Nostr: Anybody know what #metadata npub1rky9q…n0xq2 looks at when deciding whether to show ...

Anybody know what #metadata npub1rky9qeplwklrsezde4nrzy4qqtr0fasvhhauqdjrd8ej44uxerfqjn0xq2 (npub1rky…0xq2) looks at when deciding whether to show a preview card for a toot containing a URL?