Self-host a user rate-limited YouTube API proxy (must provide your own key for v3).
GET https://ytapi.example.com/v1/resolve_url?url=https://www.youtube.com/@VanityUrl
-> POST https://youtubei.googleapis.com/youtubei/v1/navigation/resolve_url
GET https://ytapi.example.com/v3/videos?part=snippet&id=dQw4w9WgXcQ
-> GET https://www.googleapis.com/youtube/v3/videos?part=snippet&id=dQw4w9WgXcQ