your title needs to match the content. you can make it clickbaity, just don't lie in the title.
bad title: Find Out Who Killed JFK
good title: These JFK Documents Blow The Doors Wide Open
while the bad title seems like it'd be great, you can't prove what you're saying because you can't prove who killed JFK. so it's going to get reported by viewers with buyer's remorse (err, clicker's remorse).
the good title, on the other hand, only mentions documents (which you need to at least mention on your landing page) but doesn't reveal what the documents say. you want the audience to wonder what these documents are all about, not an answer you don't have to a question you could have avoided in the first place.
don't make promises you can't keep and your clickbait should be fine.