Ask HN: What's the best way to get developers to try a new devtool?

Some friends of mine founded a devtools startup, building a collaboration tool for dev teams. They asked me for any ideas on how to get developers to try their SDK. I had no ideas of my own so I'm posting here hoping that someone can suggest some strategies/tactics they can use to get their critical, focused batch of beta users.

(If you're interested to try it yourself, you can check it out here - https://sdk.livecycle.io/signup2 )

Suggestions welcome and appreciated... Thanks!!