Launch Week Day 5: Zinc GPT

We're wrapping up launch week with something different: A Demo.

All week we've been shipping features. Today we're showing you what you can build with them.

Zinc GPT is a conversational shopping assistant. You chat with it, tell it what you're looking for, and it finds products across almost any major US retailer. When you're ready, it checks out for you. Real products, real purchases.

It's open source. You can deploy it yourself.

Try it live | GitHub

Why we built this

Every few weeks, someone asks us: "What would it look like to build an AI agent that can actually buy things?"

Not just search. Actually complete a purchase — payment, fulfillment, tracking.

So we built the whole thing. Zinc GPT is a working reference implementation. Fork it, break it apart, use it as a starting point for whatever you're building.

How it works

You chat with an LLM. It searches for products via SerpAPI. When you want to buy, Stripe handles payment, then Zinc places the order. Webhooks keep everything in sync.

What's included

• AI-powered natural language search across major US retailers
• Stripe checkout for payments
• Zinc integration for order fulfillment
• Webhook handlers for Stripe and Zinc events
• Content moderation for prohibited items
• Rate limiting and input validation

Get started

Clone the repo, add your API keys, and run it locally:

git clone https://github.com/zincio/zinc-gpt.git
cd zinc-gpt
npm install
cp .env.example .env
npm run dev

Full setup instructions are in the README: github.com/zincio/zinc-gpt

More demos coming

This is the first. We're going to ship more of these — practical examples of what you can build with Zinc.

What do you want to see next? Reply to this post or email us at support@zinc.com.