YouTube operational API works when YouTube Data API v3 fails.

Current implemented features:

Based on Channels: list: https://yt.lemnoslife.com/channels?part=status,premieres,shorts,community,channels,about&forUsername=USERNAME&id=CHANNEL_ID&handle=HANDLE
Based on CommentThreads: list: https://yt.lemnoslife.com/commentThreads?part=snippet,replies&videoId=VIDEO_ID(&pageToken=PAGE_TOKEN)
Based on Playlists: list: https://yt.lemnoslife.com/playlists?part=statistics&id=PLAYLIST_ID
Based on PlaylistItems: list: https://yt.lemnoslife.com/playlistItems?part=snippet&playlistId=PLAYLIST_ID(&pageToken=PAGE_TOKEN)
Based on Search: list: https://yt.lemnoslife.com/search?part=id,snippet&q=QUERY&channelId=CHANNEL_ID&eventType=upcoming&hashTag=HASH_TAG&type=video&order=viewCount,relevance(&pageToken=PAGE_TOKEN)
Based on Videos: list: https://yt.lemnoslife.com/videos?part=id,status,contentDetails,music,short,impressions,containsMusic,isPaidPromotion,isPremium,isMemberOnly,mostReplayed,qualities,chapters&id=VIDEO_ID&clipId=CLIP_ID&SAPISIDHASH=YOUR_SAPISIDHASH

https://yt.lemnoslife.com/lives?part=donations&id=VIDEO_ID
https://yt.lemnoslife.com/liveChats?part=snippet,participants&id=VIDEO_ID&time=TIME_MS

Make YouTube Data API v3 request WITHOUT ANY KEY:

To make ANY YouTube Data API v3 request WITHOUT ANY KEY/USING YOUR QUOTA, you can use: https://yt.lemnoslife.com/noKey/YOUR_REQUEST
For instance you can use: https://yt.lemnoslife.com/noKey/videos?part=snippet&id=VIDEO_ID instead of https://www.googleapis.com/youtube/v3/videos?part=snippet&id=VIDEO_ID
I may add in the future limitation per IP etc if the quota need to be better shared among the persons using this API.
Currently this service is powered by 172 keys.
Share your YouTube Data API v3 key to power the no-key service:

Open-source:

The source code is available on GitHub: https://github.com/Benjamin-Loison/YouTube-operational-API

Contact:

If a feature you are looking for which isn't working on YouTube Data API v3, ask kindly with the below contact:
- Matrix
- Discord

This instance uses version: a07596c63963c346abb9ccf5ccb1ddbd525431d0