The LLM chooses to call a tool, it doesn't choose how the frontend handles anything about that call between the LLM making a tool request and the frontend, afte

The LLM chooses to call a tool, it doesn't choose how the frontend handles anything about that call between the LLM making a tool request and the frontend, after having done its processing of the response (including any validation), mapping the result into a new prompt and calling the LLM with it.