# API Reference This reference application's APIs' are mainly defined by the APIs' of the below two Microservices: 1. DL Streamer Pipeline Server - DL Streamer Pipeline Server reference document on API Reference is present [here](https://docs.openedgeplatform.intel.com/edge-ai-libraries/dlstreamer-pipeline-server/main/user-guide/api-reference.html) 2. Model Registry Microservice - Model Registry Microservice's reference document on API Reference is present [here](https://docs.openedgeplatform.intel.com/edge-ai-libraries/model-registry/main/user-guide/api-reference.html)