YouTube Watch History
API is described here: https://developers.google.com/youtube/2.0/developers_guide_protocol_watch_history
Looks like playlists are limited to 200 items; does that apply to the playlist containing the watched clips, too? Can’t test this myself right now because I disabled my YouTube history :-)
https://degreed.com/ has YouTube history feature.
AdminEric Jain (Admin, Zenobase) commented
Thanks, good to know.
Well my "Watch history" "playlist" is at least 574 items (Clicked more a few times and then counted with jQuery) so that limitation doesn't seem to apply for this special list :)
In the new API version you would use the playlistItems endpoint to fetch the content of the "Watch history" playlist (the one available at https://www.youtube.com/feed/history).
Linked API version is deprecated