Clearbit Risk API: Monitor fraudulent sign-ups

At some point while running a business online you’ll invariable have to deal with an in-flood of spam/fake accounts and payments fraud. We’re no stranger to this at Clearbit.

As a data provider, we realized we were in a great position to solve this problem as we’ve built up a proprietary dataset of people, companies and IP addresses. Thus was born the Risk API. The Risk API takes an email & IP address, and returns an associated Risk score which you can use to block bad actors.

Behind the scenes we look at such factors as whether an email address is disposable, whether the client is using a proxy, signup velocity, and more to determine an accurate risk level. Since this API gets more useful as more people use it, we’re giving everyone *50k free requests* every month which should cover most people’s needs.