Need comment scraper

I am planning to create a campaign but I need to have spintex format related comment to post on pins and facebook post.

Is there any scraper in MS. Scrape comments related to the long tail keyword.

Is there any tool to do or any suggestion on how to build comment database. It will best to create a API to share this comment database in public where we can share or buy from that.

We don’t have such tool for FB in Mass Planner.