402MCP.org — HTTP 402 & Agent Payment Registry for LangChain
org.402mcp/registry
Decode HTTP 402 challenges (L402, x402, MPP) and choose agent payment rails from an open registry.
client:LangChain
transport:streamable-http
runtime:npm
tools:7
Install 402MCP.org — HTTP 402 & Agent Payment Registry in LangChain
pip install langchain-mcp-adapters
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({
"registry": {
"transport": "streamable_http",
"url": "https://402mcp.org/api/v1/mcp",
}
})
tools = await client.get_tools()
get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs