OpenHands/OpenHands
OpenHands is an AI-powered platform that automates software development tasks, enabling developers to code less and produce more by modifying code, running commands, browsing the web, and integrating APIs efficiently.
mayooear/ai-pdf-chatbot-langchain
The AI PDF Chatbot & Agent project is a comprehensive monorepo template designed to build an AI-powered chatbot that can ingest PDF documents, store their embeddings in a vector database, and answer user queries using large language models (LLMs) like OpenAI. The project leverages LangChain and LangGraph frameworks for orchestrating the ingestion and retrieval workflows, providing a robust and customizable architecture for AI and LLM applications. The chatbot interface is built with Next.js and React, offering a user-friendly UI for uploading PDFs, real-time chat interactions, and viewing chat history. The backend is a Node.js/TypeScript service that manages document ingestion, vector embedding storage in Supabase, and retrieval of relevant documents to generate concise, referenced answers. Key features include a document ingestion graph for parsing PDFs into document objects, a retrieval graph for handling user questions and generating responses, real-time streaming of answers, and LangGraph's state machine approach for visualizing and debugging the agent's workflow. The system architecture integrates Supabase as the vector store, OpenAI or other LLM providers for language modeling, and LangGraph for orchestrating the graph steps. The project requires Node.js, Yarn, a Supabase project for vector storage, and API keys for OpenAI and optionally LangChain for enhanced debugging and tracing. Environment variables configure the backend and frontend services, enabling seamless local development and deployment. This project serves as both a practical tool and an educational example accompanying the book "Learning LangChain (O'Reilly)", making it valuable for developers interested in building AI chatbots with document understanding capabilities.
https://github.com/mayooear/ai-pdf-chatbot-langchain
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