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mcp/harbor
LangChain

Arcaeon Ledger for LangChain

io.arcaeon/ledger

Tamper-evident action logging for agents: hash-chained append/verify, one JSONL file, zero deps.

client:LangChain transport:stdio runtime:pypi

Install Arcaeon Ledger in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "ledger": {
            "transport": "stdio",
            "command": "uvx",
            "args": ["arcaeon-ledger"],
        }
})

tools = await client.get_tools()

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

Arcaeon Ledger in other clients

Arcaeon Ledger MCP server