I’m trying to develop a custom integration where our backend system can interact with LinkedIn’s messaging and comment features — such as sending/receiving direct messages or posting/retrieving comments on posts.
However, after reviewing the official LinkedIn API documentation, I couldn’t find any public endpoints that support:
Reading or sending LinkedIn messages
Managing or retrieving comments on user or company posts
It seems like these APIs may only be accessible through LinkedIn’s Marketing Developer Platform or Partner Program.
Getting webhooks, Sending messages and comments