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 differs from an application binary interface (ABI) in that an API is source code-based while an ABI is a binary interface. For instance POSIX is an API, while the Linux Standard Base provides an ABI.