The ADP Client Connection Library is intended to simplify and aid the process of authenticating, authorizing and connecting to the ADP API Gateway. The library includes a sample application that can be run out-of-the-box to connect to the ADP API test gateway.
ADP Client Connection Library supports OAuth2 Authorization Code and Client Credentials flows. ID token retrieval via OpenID Connect based Authorization Code flow is also supported. The following table shows the availability of the library for various languages.