Can Celonis be used as a data source to other tools?

With new capability Intelligence API, yes you can. But you need to have Knowledge model

https://docs.celonis.com/en/march-2023-release-notes.html#UUID-efa1c420-f810-a795-30d0-ecebd40e697a_UUID-5bbadef9-a92f-8f2c-196b-6ac277e7e9ba

There are other ways as well, like executing pycelonis from external system to consume any analysis or data model.

Thanks

Muthappan