langchain-mesh-cognition

Give any LangChain agent distributed memory across devices. What one agent learns, all agents can recall.

Install

pip install langchain-mesh-cognition

Prerequisite: the mesh service must be running on each device:

npm install -g mesh-cognition-service
mesh-cognition start --daemon

Quick Start

Use tools directly (no LLM needed)

The tools work standalone — no API keys, no LLM costs:

from langchain_mesh_cognition import MeshMemoryWrite, MeshMemorySearch

# Write a memory — broadcasts to all mesh peers
MeshMemoryWrite().invoke({"content": "Team standup moved to 10am Monday", "tags": "meeting,standup"})

# Search from any device on the mesh
print(MeshMemorySearch().invoke({"query": "standup"}))
# → [Hongweis-MacBook-Air.local] Team standup moved to 10am Monday (tags: meeting, standup)

Use with a LangChain agent (optional)

Add mesh memory to a conversational agent that decides when to read/write:

from langchain_mesh_cognition import MeshCognitionToolkit
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

agent = create_react_agent(ChatOpenAI(model="gpt-4o"), MeshCognitionToolkit().get_tools())
agent.invoke({"messages": [("user", "What meetings do I have?")]})
# → Agent calls mesh_memory_search, finds meetings stored by any device on the mesh

Tools

Use Individual Tools

from langchain_mesh_cognition import MeshMemoryWrite, MeshMemorySearch

# Add specific tools to any agent
tools = [MeshMemoryWrite(), MeshMemorySearch()]

Custom Service URL

toolkit = MeshCognitionToolkit(base_url="http://192.168.1.100:18790")

Multi-Agent with LangGraph

from langchain_mesh_cognition import MeshCognitionToolkit
from langgraph.prebuilt import create_react_agent

# Two agents sharing the same mesh
research_agent = create_react_agent(llm, MeshCognitionToolkit().get_tools())
writing_agent = create_react_agent(llm, MeshCognitionToolkit().get_tools())

# Research agent stores findings → writing agent recalls them
research_agent.invoke({"messages": [("user", "Research quantum computing trends")]})
writing_agent.invoke({"messages": [("user", "Write a summary using mesh memory")]})

For cross-device mesh, start mesh-cognition on each machine. Agents on different devices share memory automatically via Bonjour/mDNS discovery.

How It Works

LangChain Agent
    ↓ uses tools
MeshCognitionToolkit
    ↓ HTTP calls
mesh-cognition-service (localhost:18790)
    ↓ TCP + Bonjour
Other mesh nodes on the network

The agent doesn't need to know about networking, discovery, or coupling. It just reads and writes memories — the mesh handles distribution.

Links

• Mesh Cognition SDK
• mesh-cognition-service (npm)
• Whitepaper

SYM.BOT Ltd · Apache 2.0