License Service Application Programming Interface (LSAPI)

A standardized set of functions that provides license-tracking services within applications. These services include the ability to request that the licensing system grant the application software rights to run, release those rights when they are no longer needed, and update the state of the licensing resources granted to the software product. The LSAPI specification provides a standard interface between LSAPI-enabled software and LSAPI-compliant software licensing products. See also basic challenge protocol.