Why Doesn't useThreadHistory React to useStream Option Changes?

[Kreezag]

Question: Does useThreadHistory work as expected?

Hello everyone,

I've encountered some unexpected behavior with the React hook useStream when its options are updated. This raises the question: Is useThreadHistory functioning correctly in this case?

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Background

It appears that when useStream options change (such as apiKey or defaultHeaders), requests like /threads and /threads/{id}/runs/stream correctly reflect the new values. However, the request to /threads/{id}/runs/history does not seem to react to these updates.

Looking into the source code for useThreadHistory, it seems that history is re-fetched only when the threadId changes. Other option changes (e.g., a new Client instance due to updated options) do not trigger a reload.

So, my question is: Is this intentional?

If so, what was the reasoning behind excluding useThreadHistory from reacting to changes in options passed to useStream (which effectively result in a new Client instance)?

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Additional Context

I came across this related issue, but the suggested solution doesn’t apply in my case — I'm using useStream within a React context.

Here’s the scenario:
Users authenticate with their own API keys, allowing us to identify them individually on the LangGraph server (and route them to the correct agent). We wait for user data before initializing useStream with the necessary options and then send messages. In this flow, only the /history endpoint fails to respect the updated options, resulting in an access error.

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Code Example

Here’s a simplified code example from our context provider:

    const [memberApiKey, setMemberApiKey] = useState<string | undefined>(undefined);
    const [threadId, setThreadId] = useState<string | null>(null);

    const thread = useStream<{ messages: Message[], workspaceId: WorkspaceResponse['id'], hubId: HubResponse['id'] }>({
        apiUrl: process.env.LANGGRAPH_API_URL,
        assistantId: process.env.LANGGRAPH_AI_ASSISTANCE_ID,
        threadId,
        apiKey: memberApiKey,
    });
    
    
    const initialize = ({ apiKey, threadId }: { apiKey: string }) => {
        setMemberApiKey(apiKey);

        setThreadId(null);
    }

Dependencies

        "@langchain/core": "^0.3.57",
        "@langchain/langgraph-sdk": "^0.0.77",

Any clarification or guidance would be appreciated. Thanks!

[Kreezag]

This is no longer reproduced after updating to 0.0.90