majiayu000 LangChain Agent
An AI agent with tools (search engine and calculator) powered by LangGraph and the Vercel AI SDK.
Tech Stack
- Framework: Next.js
- AI: LangChain.js, LangGraph, AI SDK
- Database: PostgreSQL
- Package Manager: pnpm
Prerequisites
- PostgreSQL database
- OpenAI API key
Setup
1. Clone the Template
git clone --depth 1 https://github.com/Eng0AI/langchain-agent.git .
If the directory is not empty:
git clone --depth 1 https://github.com/Eng0AI/langchain-agent.git _temp_template
mv _temp_template/* _temp_template/.* . 2>/dev/null || true
rm -rf _temp_template
2. Remove Git History (Optional)
rm -rf .git
git init
3. Install Dependencies
pnpm install
4. Setup Environment Variables
Create .env with required variables:
POSTGRES_URL- PostgreSQL connection stringOPENAI_API_KEY- OpenAI API key for the agent
Build
pnpm build
Development
pnpm dev