This is the ninth part of our 12-day Advent of Monitoring series. In this series, Checkly's engineers will share practical monitoring tips from their own experience. Checkly's new multi-step API check brings together the affordability and functionality of its core checks, offering a cost-effective solution for frequent users, enhanced functionality with dynamic value storage, the ability to work with binary files, and a fully programmable interface. This new feature is a giant leap forward from Checkly's pre-existing API checks, providing users with more versatility and adaptability in their usage scenarios.