WebMethods API

I'm looking for a freelancer to help me develop an application using the WebMethods API that integrates data from multiple sources. Specifically, I need to access existing data through the API, so I'm looking for someone who can ensure accuracy and reliability while keeping the integrity of the data intact. I'm not sure if there are any restrictions or guidelines I need to follow when using the API; I'm looking for someone experienced and knowledgeable, so the project is completed to my satisfaction and any potential barriers are avoided. Thanks in advance for any offers!