{"message":"YouTube Search API","version":"1.0.1","endpoints":{"search_videos":"/api/videos","search_channels":"/api/channels","search_playlists":"/api/playlists","search_all":"/api/search","get_video_info":"/api/video/{video_id}","get_channel_info":"/api/channel/{channel_id}","get_playlist_info":"/api/playlist/{playlist_id}","get_playlist_videos":"/api/playlist-videos/{playlist_id}","test":"/test","health":"/health","docs":"/docs"},"notes":{"playlist_limitations":"Radio/Mix playlists (bắt đầu với 'RD') không được hỗ trợ","video_id_formats":"Hỗ trợ video ID hoặc full YouTube URL","channel_formats":"Hỗ trợ channel ID (UC...), handle (@...) hoặc full URL"}}