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LangChain OpenFile Resource/List filing types

How to: LangChain OpenFile List filing types

client:LangChain transport:streamable-http resource:List filing types

Add OpenFile to LangChain

  1. 01

    Open pip install langchain-mcp-adapters and merge this in. Keep any servers already there.

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "openfile": {
            "transport": "streamable_http",
            "url": "https://mcp.joinopenfile.com",
        }
})

tools = await client.get_tools()
  1. 02

    Save the file and restart LangChain.

  2. 03

    List filing types is surfaced through the client's resource API, read by URI. It is context to attach, not an action to run.

  3. 04

    If it does not appear, check that OpenFile is connected and that you are looking at its resources rather than its tools.

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

Same resource, other clients

Read from the server itself, by connecting to it and calling resources/list on 11 November 2026. A listing does not declare its resources, so asking is the only way to know them, and this is what the server actually offers rather than what its listing claims. Names only are stored; connect the server for each resource's type and contents.