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mcp/harbor
LangChain

SQL for LangChain

io.github.abhishekkumar2021/sql

Read-only SQL querying + schema introspection over Postgres & SQLite, with a gated write mode.

client:LangChain transport:stdio runtime:npm

Install SQL in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "sql": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "@abhishekmcp/sql"],
        }
})

tools = await client.get_tools()

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

SQL in other clients

SQL MCP server