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LangChain

CodePostalPro for LangChain

com.codepostalpro/postal-codes

Postal lookups for 120 countries with cited sources; deep US tier: demographics, climate, area codes

client:LangChain transport:streamable-http tools:7

Install CodePostalPro in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "postal-codes": {
            "transport": "streamable_http",
            "url": "https://api.codepostalpro.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

CodePostalPro in other clients