We'll be covering the Sprint, Xfinity, and Camping World Truck Series. We'll have our own custom fantasy points scoring system. And, just like our other APIs, you can grab a free trial, and start integrating using our developer portal online documentation / open console.
As far as our coverage goes, you can get all the gritty details in our NASCAR data dictionary.
Please check out our NASCAR Data API Pricing, which includes various product tiers, and a free trial.