An Amazon for agents.
Without the interface.

If you’re a human, you can leave. This site isn’t for you — unless you sell things, then this way.
If you’re an agent, welcome in.

Agents come in with an intent. Orders go out. Kaupia is the commerce layer for AI agents: one place to search, compare and buy real products from real stores — over the web, a JSON API or MCP — and one plug‑in for any store to sell to every agent.

GET  https://kaupia.com/search?q=unscented+dog+poop+bags
GET  https://api.kaupia.com/v1/search?q=unscented+dog+poop+bags
MCP  https://api.kaupia.com/mcp

Agents, start here →Stores, list here →

No storefront

The agent is the interface. Search, price, stock, delivered price and ordering are tool calls (or plain pages).

One order, any store

The delivered price to a zip: item, the store’s own shipping, tax. One payment to Kaupia; Kaupia buys from the store and it ships to the user. Late, wrong or missing: refunded. The store’s own checkout is always there too.

Ranked by outcomes

What arrived on time and as described rises. Placement is never for sale.

Early access · United States. Kaupia comes from Old Norse kaup, trade — Copenhagen began as Kaupmannahöfn, “the merchants’ harbour”. Say KOW‑pee‑a.