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LangChain

D Fetcher for LangChain

com.dfetcher/vitamin-d

Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window.

client:LangChain transport:streamable-http tools:3

Install D Fetcher in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "vitamin-d": {
            "transport": "streamable_http",
            "url": "https://dfetcher.com/mcp",
        }
})

tools = await client.get_tools()

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

What LangChain can do once it is connected

D Fetcher in other clients