Copy Counter

AI-generated marketing kits social posts ads, and a Google Business description printed in seconds for small businesses powered by Gemini.Your marketing department printed in second powered by Gemini.

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Inspiration

What it does

Inspiration

Every small business needs a steady stream of marketing content — social posts, ads, a Google Business description — but most owners are running the shop itself, not writing copy. Hiring a marketing freelancer or agency is often out of reach for a neighborhood coffee shop or flower stand. We wanted to see if Gemini could just... do that job, instantly, for free.

What it does

Copy Counter is a single-page tool. A business owner fills in their name, what they do, their tone, and what makes them different. One Gemini API call returns a full marketing kit:

  • 5 ready-to-post social media posts (each with a different angle — story, product, community, seasonal, customer-focused)
  • 1 short ad
  • 1 Google Business Profile description

Everything is copy-paste ready. No prompt engineering, no blank page.

How we built it

  • Frontend: a single self-contained HTML/CSS/JS file — no framework, no build step, loads instantly.
  • AI: Gemini API (gemini-flash-latest), called directly with a structured prompt that asks for JSON output matching the kit's shape, so the response renders straight into the UI.
  • Hosting: Firebase Hosting (Google Cloud), deployed with the Firebase CLI.
  • Design: an order-pad / receipt-printer visual identity — dashed lines, typewriter and monospace type, torn-edge "receipt" cards — to tie the experience back to the small-business counter it's meant for.

Challenges we ran into

  • Google deprecated the Gemini model we initially wired up mid-build, so we switched to gemini-flash-latest, which always points at Google's current recommended Flash model, and added retry/fallback logic for transient 503 "high demand" errors from the free tier.
  • Building and deploying an entire working AI product from zero, end to end, in under 24 hours — including learning Firebase deploy, Git, and GitHub for the first time along the way.

What's next

Right now the Gemini API key is entered client-side, which is fine for a fast demo but not how we'd ship this to real customers — a real launch would proxy the Gemini call through a Cloud Function so the API key never touches the browser. That's the top priority if we keep building this after the hackathon.

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