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mcp/harbor
LangChain

x402-market for LangChain

io.github.asaishota/mcp-server

Let AI agents pay-per-call for any HTTP API via x402 on Base mainnet. One tool: pay_and_call.

client:LangChain transport:stdio runtime:npm

Install x402-market in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "mcp-server": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "@x402-market/mcp-server"],
        }
})

tools = await client.get_tools()

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

x402-market in other clients

x402-market MCP server