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Korea Business Verify (KBV) for LangChain

io.github.wonderfulian/kbv-server

Real-time Korean business verification via NTS. 10 free calls/day, then pay-per-call (x402).

client:LangChain transport:streamable-http tools:3

Install Korea Business Verify (KBV) in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "kbv-server": {
            "transport": "streamable_http",
            "url": "https://kbv-server-f7vfitmlkq-du.a.run.app/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

Korea Business Verify (KBV) in other clients