Production-grade Agentic AI Workspace

Built with LangGraph, Model Context Protocol (MCP), Human-in-the-Loop workflows, and secure tool orchestration to interact with external systems through natural language.

LangGraphGeminiFastAPIMongoDB AtlasMCPNext.jsOAuthGitHub APIRapidAPITavily

Authentication secured with OAuth Conversation history encrypted 30-day automatic cleanup

Core Capabilities

🧠 Agentic Reasoning

Plans actions, selects tools, evaluates results and synthesizes responses using LangGraph ReAct.

🔌 Dynamic MCP Tools

Discover and invoke external tools from connected MCP servers without modifying application code.

GitHub Integration

Fetch repository stats, analyze pull requests, and browse commit histories securely.

Smart Email Automation

Read unseen emails and securely draft responses with explicit user approval.

Live Stock Data

Fetch real-time stock prices and financial insights through RapidAPI integrations.

Web Search & Scraping

Browse the web autonomously to find factual, up-to-date information instantly.

System Architecture

🖥️ Client Layer

🔐

NextAuth.js

Google OAuth

💻

Next.js App

React Frontend

💬

ChatBox.js

Generative UI

POST /api/chat (SSE Stream)

⚙️ Server Layer

⚡

FastAPI

app/main.py

🛡️

Rate Limiter

SlowAPI + Circuit Breaker

📡

Chat API

app/api/chat.py

🗄️ Persistence Layer

🍃

MongoDB Atlas

Conversation Store

⏱️

30-Day TTL

Auto Cleanup Index

🔄

Sliding Window

Last 10 Messages

Initialize LangGraph Agent

🧠 Agentic Core (LangGraph)

🔄

State Graph

app/agent/graph.py

Reason

✨

LLM Node

Gemini / OpenRouter

tool_calls?

🛠️

Action Node

ToolNode Executor

ReAct Loop: Agent → LLM → Tool → Agent → ... → END

Invokes Tools

🔧 Built-in Tools

🔍

Web Search

Tavily API

📈

Stock Price

RapidAPI / Yahoo

🐙

GitHub Suite

6 REST API Tools

📧

Gmail

SMTP + IMAP

🌐

Webpage Reader

httpx Scraper

🧮

Calculator

Math Evaluator

🔌 MCP Integration

🔌

MCP Client

app/mcp/client.py

SSE Transport

🌐

External MCP Servers

Dynamic Tool Discovery

Auto-discovers tools via SSE →
Wraps as LangChain StructuredTool →
Available to agent without code changes

Client (Next.js) → FastAPI → LangGraph ReAct Agent → Built-in Tools / MCP → MongoDB Atlas (30-day TTL)

Client➔API➔LangGraph➔MCP & Tools