Hi Ian,
You can refer to the following documentation on building your own custom adapter with Toggl:
http://docs.workato.com/developing-connectors/sdk.html
We also have a sample connector with Toggl here: https://www.workato.com/custom_adapters/205?token=4b3da1b5
Let us know if you need further assistance!
Send us a ticket, we will try our best to assist you with your problem
Ian McCollum
Private connector for Toggl
https://twitter.com/Workato/status/959463562505793536
Workato mentioned on Twitter that a private connector for Toggl was possible. Are there any tips for making it happen?