majiayu000/claude-arsenal
xiaohongshu
xiaohongshu
286 148
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LangChain Agent
langchain-agent
AI agent with tools (search, calculator) using LangGraph and AI SDK.
SKILL.md
Full skill instructions
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
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