Kable

Kable makes it easy for developers to add usage-based billing and authentication to their API products with just three lines of code. We handle everything from usage metering to invoicing. We allow you to define tailored pricing plans for each customer or even each API endpoint. We give your customers visibility into their own usage of your product, and alert them when they reach or approach thresholds. We also offer out-of-the-box API authentication and self-service key management, so you can deploy your API products without building infrastructure in-house.