Countersign for LangChain
io.github.countersign-network/countersign
Kill switch + spend guard for AI agents that spend money, across every wallet vendor at once.
client:LangChain
transport:stdio
runtime:npm
Install Countersign in LangChain
pip install langchain-mcp-adapters
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({
"countersign": {
"transport": "stdio",
"command": "npx",
"args": ["-y", "@countersign/mcp"],
}
})
tools = await client.get_tools()
get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs