There is a preliminary REST-API available that can be used to fetch data and trigger actions.

The documentation is minimal at the moment, but the API-endpoints are listed in Sofie Core here: http://localhost:3000/api/0

DDP - Core-integration

If you're planning to build NodeJS applications that talk to Sofie Core, we recommend using the core-integration library, which exposes a number of callable methods and allows for subscribing to data the same way the Gateways does it.