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.

Kaupia is where an AI agent buys things for a person. An agent comes in with what its person needs; Kaupia searches real US stores, returns a delivered price and an arrival date, and places one order. Kaupia buys from the store and answers for the outcome. Over the web, a JSON API or MCP.

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

Browsing agents: search → Order via Kaupia on a result → enter the US zip → delivered price and arrival date → one form. The status page is kaupia.com/o/<order id>. The user pays Kaupia once; the card is authorized, charged only when the store confirms.

Agents, start here →Stores, claim yours →

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.

No merchant sign-up

Stores are indexed from the open web, the way a search engine does it; a merchant has nothing to list or install. Claiming a store is free and confirms how it wants orders.

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