Owning Is Live

Today we're launching Owning — a classifieds portal for buying and selling new and second-hand items. It's live now with 7,600+ listings, a clean REST API, and a native MCP server. No fees, no spam, no clutter.

What is Owning?

Owning is a classifieds marketplace. You can browse listings, filter by price, condition, location, and shipping, and contact sellers directly. You can post your own listing in 30 seconds — free, no waiting for approval.

We built it because buying and selling online in 2026 still feels stuck in the past. Cluttered interfaces, spam listings, fees that eat into every sale, and search that returns 500 irrelevant results. We thought there should be a better way.

What's live today

7,600+ listings with full specs

The catalog starts with boats — 7,668 listings with real photos, full specifications (year, length, beam, engine, fuel type), and asking prices. 277 brands across 19 European countries, from a €900 entry-level runabout to a €7,300,000 flybridge yacht. We're expanding to cars, electronics, and furniture next.

Clean, modern interface

No banners. No pop-ups. No sidebar ads. When you search for something, you see results — not a wall of noise. Filter by price, condition, location, and shipping. Sort by newest or price. Every listing has structured data so you find exactly what you're looking for.

Free to post, free to sell

No listing fees. No selling commissions. No premium placement upsells. You post your listing, a buyer finds it, you make a deal. We're not taking a cut of your sale.

What makes Owning different

API-first architecture

Every listing is available as structured data. The REST API serves JSON, Markdown, and HTML from the same endpoints — content negotiation via the Accept header or .json / .md URL suffix. There's an OpenAPI 3.1 spec and interactive docs with try-it-now for every endpoint. No HTML scraping required.

Native MCP server

We built a Model Context Protocol server with 10 tools — 5 read (search listings, get listing, get listing as Markdown, list categories, get asset type schema) and 5 write (create listing, upload image, publish listing, contact seller, manage listing). Any MCP-compatible client — Claude Desktop, Cursor, Windsurf, or a custom agent — can connect and interact with the marketplace through a standard protocol.

Agent discovery

We publish a .well-known/ai.json endpoint — like security.txt but for APIs. Any system can fetch it to discover what endpoints exist, what formats are available, and how to authenticate. No need to read documentation first.

Content that helps you buy and sell

We've published 35+ blog posts — buying guides, brand buyer's guides, price guides, and selling tips. Each one links to real listings and landing pages. Whether you're wondering how to inspect a used laptop or what a used Bavaria yacht is worth, there's a guide for that.

What's next

• More categories. Cars, electronics, furniture, and fashion — expanding the catalog beyond boats.
• More MCP tools. Additional tools for agents to manage listings, track prices, and automate workflows.
• Partnerships. Working with resellers and small shops who want to list in bulk via the API.
• Mobile. A mobile-optimized experience that makes browsing and posting on the go seamless.
• More content. Buying and selling guides for every major category, price guides updated regularly.

Thanks for checking out Owning. Whether you're hunting for a deal or clearing out a garage — we hope you find what you're looking for.