SupportAI
Turn your help docs into a 24/7 AI support agent — built on a 100% free stack.
Live demo: https://support-ai-murex.vercel.app/ — click Try the live demo to
explore a fully seeded workspace with no sign-up, or create your own account, upload a
document, and chat with it in the playground.
SupportAI is a full-stack SaaS platform for businesses that want to automate
customer support with AI. Upload your help docs (PDF, DOCX, TXT, Markdown, or
a URL), and SupportAI creates a chat assistant that answers customer
questions using Retrieval-Augmented Generation (RAG): every answer is
grounded in your actual documentation and cites its sources instead of
hallucinating. Embed it on your website with one script tag, or test it
straight from the built-in playground.
Contents
Why this stack is fully free
Every piece of this project runs on a generous free tier, with no credit
card required anywhere in the core product:
| Layer | Choice | Why it's free |
|---|
| Database | Neon Postgres | Free serverless Postgres tier, includes the pgvector extension |
| ORM | Prisma 7 | Open source, connects to Neon via @prisma/adapter-neon |
| Auth | NextAuth.js (Auth.js) v5 | Open source, email/password via bcrypt, no third-party auth bill |
| AI (chat + embeddings) | Google Gemini | Free API key: gemini-flash-latest for answers, gemini-embedding-2 (768 dimensions) for embeddings |
| Vector search | Postgres pgvector | Runs inside your free Neon database, no separate vector DB service |
| File parsing | unpdf + mammoth | Open source PDF/DOCX text extraction, no storage bucket needed |
| Payments | Stripe test mode | Test-mode API keys are free forever, no bank account or business verification needed. Skip it entirely and the app runs in demo billing mode automatically |
| Hosting | Vercel free tier (or anywhere Next.js runs) | — |
If you never add a STRIPE_SECRET_KEY, the billing page still works:
"upgrading" a plan just flips the workspace's plan in the database instantly
with a "demo mode" notice, so you can build and demo the whole product
without ever creating a Stripe account.
Features
- Auth & workspaces — email/password sign-up, multi-tenant workspaces with owner/admin/member roles, and a first-run wizard that creates your workspace and first assistant
- AI assistants — multiple assistants per workspace, each with its own name, description, tone (friendly / professional / playful) and custom system prompt
- Knowledge base — paste text, import a URL, or upload a PDF/DOCX/TXT/Markdown file; documents are chunked, embedded and indexed automatically and shared by every assistant in the workspace. Click a document to read its extracted text
- RAG chat playground — streamed answers per assistant, with inline
[1], [2] citation markers that point at the retrieved snippets
- Embeddable widget — a single
<script> tag drops a floating, brand-coloured chat bubble on any website, backed by the same RAG pipeline (copy the snippet from Assistants → Embed)
- Conversation history — every playground and widget conversation is logged with full transcripts; each answer lists the source documents it used, and clicking one opens it
- Analytics dashboard — 30-day messages per day and conversations handled per assistant, with headline stats, charted with Recharts
- Team management — invite teammates by shareable link, change roles, revoke invites and remove members
- Billing — Starter / Pro / Agency plans with real Stripe Checkout + Customer Portal (test mode) or automatic demo-mode fallback
- Public demo mode — one-click "Try demo" into a seeded, read-mostly workspace with two assistants, twelve help docs, a month of conversations and analytics; destructive actions are locked, live chat is rate limited, and a daily cron resets it
- Dark mode — light / dark / system theme toggle (
next-themes)
- Editorial design system — Fraunces serif + Inter + JetBrains Mono, a paper/ink colour palette, and
motion animations throughout, including scroll-triggered reveals that replay every time a section re-enters view and a type/erase cursor effect on the homepage headline
This is the beginning of the README. Read the rest at the original. Read the full README ↗
