Skip to content
LangChain

Penny x402 utilities for LangChain

io.github.pennyops/penny-x402-utils

Pay-per-call dev utilities (hash, base64, uuid, URL, time, NIP-19, BOLT11) via x402 USDC on Base.

client:LangChain transport:streamable-http tools:8

Install Penny x402 utilities in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "penny-x402-utils": {
            "transport": "streamable_http",
            "url": "https://pennyagent.pythonanywhere.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

Penny x402 utilities in other clients