FastRAG: The Production-Ready RAG Starter Kit (Next.js + LangChain)

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🛒 Gumroad Product Description

Title: FastRAG: The Production-Ready RAG Starter Kit (Next.js + LangChain)

Description Body:

Stop building RAG from scratch. Ship your AI App in minutes.

You have an idea for an AI app. But first, you have to: ❌ Figure out how to parse PDFs. ❌ Set up a Vector Database. ❌ Write the ingestion pipeline. ❌ Build the Chat UI. ❌ Handle the context window logic.

By the time you finish the setup, you're too tired to build the actual product.

FastRAG handles the boring stuff for you.

It is a production-ready Next.js 14 Starter Kit pre-configured with LangChain, OpenAI, and Pinecone. Just clone the repo, add your API keys, and start building your unique features.

🚀 What's Inside (v1.3 Update)

1. Multi-Source Ingestion Engine

• 📂 Drag & Drop PDFs: Upload multiple files at once. The backend parses, chunks, and vectorizes them instantly.
• 🌐 Web Scraper (New): Paste any URL (Documentation, Blogs, Wikis). We scrape the HTML, clean the text, and embed it for chat.

2. Production-Grade RAG Pipeline

• Smart Chunking: Uses RecursiveCharacterTextSplitter to preserve context across paragraphs.
  
• Cost Optimized: Pre-configured to use OpenAI's new embedding models forced to 1024 dimensions (Saves 33% on Pinecone storage costs).
• Citations: The AI cites the specific filename or URL source for every answer.

3. Modern Chat UI

• 📱 Fully Responsive: Works perfectly on Mobile (Full screen) and Desktop (Floating Window).
• Markdown Support: Renders code blocks, lists, and bold text beautifully.
• Streaming: Real-time token streaming (no waiting for the whole answer).

🛠 The Stack

• Framework: Next.js 14 (App Router compatible)
• AI Orchestration: LangChain.js
• Vector DB: Pinecone (Serverless)
  
• Styling: Tailwind CSS + Lucide Icons
• Deployment: One-click deploy to Vercel

🎁 What You Get

• ✅ Full Source Code (Zip Download)
• ✅ Commercial Usage License (Build and sell your own SaaS)
• ✅ Lifetime Updates for v1.x
• ✅ access to Github Repo

Stop fighting with dependencies. Start shipping.

Price increases to $99 soon.