Hi , use this api https://rapidapi.com/OthmaneDch/api/youtube-video-to-mp3/

There are good Ads-free API for download youtube videos in mp3 format @ https://mp3downy.com/youtube-to-mp3-free-api

Hi, do you have time to check my API???

https://market.mashape.com/lifehsacker-rayhan/youtube-downloader

Hi Promoteusweb,

You have not replied to the ticket. I’m still waiting for your concern.
Please reply,

Hi,

Why you’re saying this ?

Are you not getting any mp3 file or you’re talking about ads which open in the background after mp3 download ?

Please let me know your concern!