How to pass `callbacks`, `configurable`, and `metadata` config when using Langgraph Platform

[mhasan502]

I am currently using the Langgraph Platform along with this repository to deploy Agents into production. Below are the required values that I was passing in the config using the astream method:

config = {
    "callbacks": [langfuse_handler],
    "configurable": {
        "thread_id": uuid.uuid4(),
        "user_id": user_id,
        "permissions": permissions,
    },
    "metadata": {
        "langfuse_session_id": "some-session-id",
        "langfuse_user_id": user_id,
    },
}

However, I am unsure how to pass callbacks, configurable, and metadata since I am using the Langgraph Platform as the backend and this repository for the frontend.