How to update message content after each step?

[sailxjx]

I want to send the attached content to llm after a tool is called, but I don't want to send it to the front end. Currently, the package seems to only support sending the result of executed return to the next step of llm and front end.

One scenario is that we use the search tool to obtain a private knowledge base document and then pass it to LLM as context. We do not want the content of this document to be streamed to the front end, but we want the LLM in the next step to be able to obtain the document content.

We use streamText with maxSteps.