> For the complete documentation index, see [llms.txt](https://docs.fractalworks.io/joule/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fractalworks.io/joule/developer-guides/builder-sdk/connector-api/sinks.md).

# Sinks

- [CustomTransformer API](https://docs.fractalworks.io/joule/developer-guides/builder-sdk/connector-api/sinks/customtransformer-api.md): Custom parser converts an internal Joule StreamEvent into a domain object