The high-performance computing environment is designed to provide high-performance computing services for users and research teams. As more and more supercomputing centers, application communities, and service platforms have access to the environment, their users expect to use resources by logging in the high-performance computing environment with their original accounts. Now, only grid accounts authenticated by LDAP can access the application program interface (API) of the high-performance computing environment. To meet the expectation of users, we develop a new version of API for the high-performance computing environment. This study mainly introduces the structure and implementation of the new API, and the calling ways of the new API are exemplified. The new API can provide more convenient and secure services for the access of communities and service platforms to a high-performance computing environment.