We're building 90+ at the Meta Global AI Developer Hackathon

Opesi Mansion has been accepted into the Meta Global AI Developer Hackathon. From 27 October to 4 November 2026, we’re building our first product, 90+, and we’ll share progress in public along the way.

One photo like this holds more than a dozen things someone could sell. Today, each one has to be listed by hand.

The problem

Selling things you already own should be easy. In practice, every item needs its own photos, title, description, price and category details. On eBay, each category also asks for item specifics such as brand, size, colour and material. A box of clothes or a shelf of household items can take a whole weekend to list.

The rules are getting stricter too. Since August 2026, eBay says it can block or hide clothing and shoe listings that have non-standard, missing or incomplete sizes.

What 90+ does

The idea is simple: one photo, 90+ listings.

1. Photograph or film the things you want to sell: a table, a shelf, a box.
2. 90+ finds each item in the picture and separates them.
3. It reads what it can see, such as labels, sizes, brands and visible wear, and fills in the details each eBay category asks for. Anything it is unsure about is marked for you to check rather than guessed.
4. You review and approve every listing. Nothing goes live without you.
5. Each item is prepared for eBay and as a ready-to-post Facebook Marketplace listing.

Built with Meta’s models

90+ is being built on Meta’s AI models. SAM 3.1 finds and separates each item in a photo or video, and Muse Spark reads the details and writes each listing. We’ll share what works, and what doesn’t, as we build.

What’s next

The hackathon closes on 4 November 2026. Follow the build on X and at 9ntyplus.com. 90+ is in development and not yet available.