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LangChain

PEAC Protocol: Signed interaction receipts for LangChain

io.github.peacprotocol/peac

Portable signed records for agent, API, MCP, and cross-runtime interactions.

client:LangChain transport:stdio runtime:npm

Install PEAC Protocol: Signed interaction receipts in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

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

tools = await client.get_tools()

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

PEAC Protocol: Signed interaction receipts in other clients