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mcp/harbor
LangChain

tollbooth x402 for LangChain

io.github.solomonisblack/tollbooth-x402

Discover, quote, verify & self-check 56 x402 pay-per-call finance/tax calculators for AI agents.

client:LangChain transport:stdio runtime:npm

Install tollbooth x402 in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "tollbooth-x402": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "tollbooth-x402"],
        }
})

tools = await client.get_tools()

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

tollbooth x402 in other clients

tollbooth x402 MCP server