JMP 19 will expand on the Data Connector feature introduced in JMP 18 to allow uniform access to more data sources. Besides adding more built-in connection types, JMP 19 will also allow users to define their own connection types by means of an exposed Python API. Like the built-in types, these types will share in the benefits of the Data Connector feature, including its configuration management and Query Builder integration. And because they're implemented in Python, they can make use of existing Python libraries. In this presentation, we describe the API, discuss the concepts involved in it, and show it in action.