Then I think you have already solved 90% of the problem 👏 Some options to continue: You could ask in the previous node for chatbot users to provide their API key. Or, if the chatbot creator feels generous, they can let users use their API key stored in Botpress config variables. In that option, you can control your API key usage by combining that with limiting the messages to '10 daily' or some idea like that https://discord.com/channels/1108396290624213082/1211773624130863186