Thanks for continuing to help! Doesnt seem like this is a valid use of the observabilityPlan

assistantRequestError:Invalid Assistant. Errors: [\n  "assistant.observabilityPlan.provider must be one of the following values: langfuse"\n]

I also tried metadata on assistant (not nested), and nothing shows up on the end of call report edit: I guess it kind of works if i set langfuse, even if im not using it edit 2: nvm using metadata on the assistant (not observabilityplan) does work - thanks for sending that doc page i wasnt sure where to see a full assistant object