If the output schema specifies an id field, the LLM can write a code snippet that references it based on the context of the subsequent request, but the LLM doesn't need to observe the underlying value unless necessary. E.g., it can pass the 'id' opaquely to another call that receives the "id" as an input. If the user specifically wants to see the "id", the code orchestration approach can have the LLM just print the content.