This application facilitates a chatbot by leveraging Next.js as the frontend and FastAPI as the backend, utilizing the power of LangChain for dynamic web interactions.
- Web Interaction via LangChain: Utilizes the latest LangChain version for effective interaction and information extraction from websites.
- Versatile Language Model Integration: Offers compatibility with various models including GPT-4. Users can easily switch between models to suit their needs.
- User-Friendly Next.js Frontend: The interface is intuitive and accessible for users of all technical backgrounds.
The application integrates the Python/FastAPI server into the Next.js app under the /api/
route. This is achieved through next.config.js
rewrites, directing any /api/:path*
requests to the FastAPI server located in the /api
folder. Locally, FastAPI runs on 127.0.0.1:8000
, while in production, it operates as serverless functions on Vercel.
- Install dependencies:
npm install
- Create a
.env
file with your OpenAI API key:OPENAI_API_KEY=[your-openai-api-key]
- Start the development server:
npm run dev
- Access the application at http://localhost:3000. The FastAPI server runs on http://127.0.0.1:8000.
For backend-only testing:
poetry init
make run-backend