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LangChain

John's Essentials for LangChain

com.johnsessentials/johns-essentials

144 deterministic file tools: PDF, image, media, convert, analyze. Connect in one click (OAuth).

client:LangChain transport:streamable-http

Install John's Essentials in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "johns-essentials": {
            "transport": "streamable_http",
            "url": "https://api.johnsessentials.com/mcp/messages",
        }
})

tools = await client.get_tools()

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

John's Essentials in other clients