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mcp/harbor
LangChain

security proxy for LangChain

io.github.guardbee/security-proxy

MCP gateway: many servers, one policy, lethal-trifecta blocking, PII masking, audit log

client:LangChain transport:stdio runtime:npm

Install security proxy in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "security-proxy": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "@guardbee/mcp-security-proxy"],
        }
})

tools = await client.get_tools()

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

security proxy in other clients

security proxy MCP server