actually @Egreentech just posted a theoretical solution that should work for dynamic injection of oAuth credentials that would allow the multi-tenant setup we’re all hoping for on a single n8n instance: Possible to do multi-tenant workflows that can reference credentials dynamically? - #17 by Egreentech
Have not confirmed that it works yet but sounds very promising and is consistent with how I’d expect it would need to work capturing the oAuth tokens for each user and logging those in an external db. Monitor that thread as sounds like @Egreentech is planning to write up a formal blog post tutorial that documents setup.