Agentic Express Boilerplate

This project is a boilerplate application powered by Agentic Express, a framework for building AI-powered Express.js applications with LangGraph.

Features

• 🤖 Ready-to-use LLM integration with LangGraph
• 🔄 Streaming responses support
• 🛠️ TypeScript setup for type safety
• 🚀 Express.js server configuration
• 📝 Modular project structure
• 🧩 Customizable LLM models and prompts

Getting Started

Prerequisites

• Node.js (v18 or higher recommended)

Installation

1. Clone this repository
2. Install dependencies:

pnpm install
# or
npm install
# or
yarn install

3. Copy the environment template and add your API keys:

cp .env.template .env

4. Start the development server:

pnpm dev
# or
npm run dev
# or
yarn dev

The server will start on http://localhost:3030 by default.

Project Structure

src/
  ├── index.ts                # Main application entry point
  ├── routes/                 # API routes
  │   └── v1/                 # API version 1
  └── services/               # Service modules
      └── langgraph/          # LangGraph implementation
          ├── graphState.ts   # Graph state management
          ├── models.ts       # LLM model configuration
          ├── nodes/          # Graph nodes
          └── prompts/        # System prompts for AI

Configuration

• Model settings can be adjusted in src/services/langgraph/models.ts
• System prompts for the AI can be modified in src/services/langgraph/prompts/
• LangGraph node definitions are located in src/services/langgraph/nodes/

Development

pnpm dev
# or
npm run dev
# or
yarn dev

Built With

• Agentic Express - Framework for AI-powered Express applications
• LangChain - LLM framework
• LangGraph - Graph-based LLM orchestration
• Express.js - Web framework
• TypeScript - Language