mongodb-agent-langgraph-mcp

MongoDB Agent LangGraph MCP

This project is a fork of Gaurab MCP project

This project provides a REPL to interact with a MongoDB instance using natural language, powered by LangChain.js MCP Adapter, LangGraph agent and OpenAI.

Features

• Ask open-ended questions about your MongoDB instance
• Uses a suite of MongoDB tools (find, aggregate, insert, update, etc.)

---

Prerequisites

• Node.js (v18+ recommended)
• npm
• Access to an OpenAI resource (API key, deployment, etc.)
• Access to a running MongoDB instance

---

Environment Variables

Ensure you have the following environment variables set:

export OPENAI_API_KEY=
export OPENAI_MODEL_NAME=gpt-3.5-turbo
export TEMPERATURE=0
export MONGO_CONNECTION_STRING=

---

Installation

1. Clone the repository:

   git clone git@github.com:josmanperez/mongodb-agent-langgraph-mcp.git
   cd mongodb-agent-langgraph-mcp
   

2. Install dependencies:

   npm install
   

---

Usage

1. Ensure your MongoDB instance is running and accessible.
   • For MongoDB MCP, the default connection string is set to mongodb://localhost:27017/?directConnection=true in client.js. Change it if needed.
2. Start the REPL:

   node client.js
   

3. Interact with the agent:
   • Type natural language questions or commands, e.g.:
     • list all my databases
     • count documents in collection users in database mydb
     • insert a document into collection test in database mydb
   • Press Ctrl+C to exit.

---

Customization

• To change the MongoDB connection string, edit the connectionString in client.js.
• To use a different Azure OpenAI deployment/model, update the environment variables accordingly.

---

License

MIT