AI-powered marketplace listings

Listing Ninja

Turn clutter into cash — in seconds.

AI-powered listing generator that writes professional marketplace copy from a photo and a few details. No subscriptions. No monthly fees. Buy once, keep forever.

Get Basic — $7.99 Get Pro — $24.99
Facebook MarketplaceeBayCraigslistOfferUpMercariEtsyBuy/SellTikTok Shop
Vintage Oak Coffee TableReady
AI description
$75–$110Price range
8.7Condition
12Keywords

How it works

Go from messy notes and photos to polished listings in one quick flow.

1

Upload the item

Upload a photo and paste the product URL or describe it.

2

Let AI write it

AI writes a complete listing — title, description, price range, keywords, and condition score.

3

Post anywhere

Copy it or export to CSV / spreadsheet. Post it anywhere.

Choose your seller tier

Start simple with Basic, or unlock the full workflow with Pro.

Basic

$7.99 one-time

Perfect for occasional sellers who want better Facebook Marketplace posts fast.

Included
  • Facebook Marketplace support
  • 1 photo upload
  • AI-generated title
  • AI-generated description
  • Basic pricing assistance
  • Basic category suggestions
  • Copy-to-clipboard export
Limitations
  • Single marketplace only
  • No saved history
  • No advanced pricing tools
  • No condition scoring
  • No spreadsheet exports

Pro

$24.99 one-time

Built for side hustlers, resellers, and anyone listing across multiple platforms.

Included
  • Multiple photo uploads
  • Advanced AI listing generation
  • SEO optimization
  • Competitor pricing analysis
  • Condition scoring
  • Keyword generation
  • Spreadsheet CSV export
  • Saved local listing history
  • Multi-platform export support
  • Enhanced AI prompting
  • Advanced listing templates
Platforms supported
Facebook MarketplaceeBayCraigslistOfferUpMercariEtsyBuy VintageTikTok Shop
How Listing Ninja saves you money.

No monthly subscription. You connect your own API key from Anthropic, OpenAI, or Google Gemini and pay only for what you use — typically just cents per listing.

Who it’s for

Designed for anyone who wants better listings without learning copywriting, SEO, or pricing research.

🏠

Casual sellers

Clean out your home and make every item sound worth buying.

📈

Side hustlers

Flip items for profit with stronger copy and smarter pricing guidance.

📦

Resellers

Manage volume with repeatable templates, exports, and multi-platform support.

FAQ / How delivery works

Simple purchase, instant delivery, and no recurring bill.

1Purchase once through Gumroad.
2Get the download link and license key by email.
3Open the HTML file in any modern browser.
4Enter your license key to unlock your tier.
5Use it on Mac, Windows, or any modern browser — no subscription.

Frequently Asked Questions

Clear answers before you buy.

Why do I need my own API key?

You bring your own Anthropic, OpenAI, or Google Gemini key, then pay only for what you actually use. That is typically very affordable, avoids monthly subscription fees, and helps keep Listing Ninja a low one-time purchase.

Does it work on Windows and Mac?

Yes. Listing Ninja is a browser-based HTML app, so it works on Mac, Windows, and any device with a modern browser.

Do I need to install anything?

No install is required. Open the downloaded HTML file in your browser, enter your license key, add your AI API key, and start creating listings.

Is this a subscription?

No. Basic and Pro are one-time purchases. You bring your own AI provider key, so there is no recurring Listing Ninja fee.

Buy once. List forever.

Choose the version that matches how often you sell.

Pro

$24.99

The complete multi-platform listing workflow with exports and advanced AI tools.

Buy Pro on Gumroad