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LangChain

x402 Pay — USDC API Payment Helper for LangChain

com.scriptmasterlabs/x402-pay

Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

client:LangChain transport:streamable-http tools:4

Install x402 Pay — USDC API Payment Helper in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "x402-pay": {
            "transport": "streamable_http",
            "url": "https://squeezeos-api.onrender.com/mcp/x402-pay",
        }
})

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

x402 Pay — USDC API Payment Helper in other clients