How Often Do You Feed Your Puffer? in the Puffers forums, part of the Freshwater Fish Forums category.
For other uses, see API (disambiguation). In computer programming, an Application Programming Interface (API) is a set of subroutine definitions, protocols, and tools for building application software. In general terms, it is a set of clearly defined methods of communication between various software components.
An API (Application Programming Interface) is best thought of as a contract provided by one piece of computer software to another. It's important to note that pieces of software can interact with or without an API. For example: Without API: