http://lbrdtjaj7567ptdd4rv74lv27qhxfkraabnyphgcvptl64ijx2tijwid.onion
I'm terrible at naming things, so I couldn't think of a better name than "SpotifySaver." It's basically a CLI tool that receives Spotify links, searches for their equivalent on YoutubeMusic, and downloads them. As for the technical aspects, below I use libraries like yt-dlp, an unofficial library for the YouTube API, and the official library for the Spotify API.