Very Cool, one of the missing pieces to AI being useful in business tasks is dynamic internal validation steps. I would suggest adding a couple of those out of the box. For example if the user expect JSON format out of the LLM, add a validation step that send the output back to the LLM to ask it if it is actually JSON. Then you can expand on that to more validations like "is the output polite". The ultimate solution is having the LLM build the validations itself.