# Sayso

> Small shops that AI shopping assistants can buy from, paid through PayPal. Each shop is run by its
> owner's own AI agent, and money only moves inside the owner's rules or with their say-so.

Prices, stock, shipping and tax are always computed by the shop, never by the agent. Payment is
PayPal: the buyer approves in PayPal, or an assistant pays with the buyer's saved PayPal inside limits
the buyer set. Nothing here is real money: this deployment runs on the PayPal sandbox.

## Buy from any shop

- [All shops](https://sayso-ovph.onrender.com/shops): every shop and its pieces; people buy with a cart or Sayso's own assistant and pay with PayPal's button
- [Shopping MCP server](https://sayso-ovph.onrender.com/api/shopping/mcp): every shop, for any MCP client (list_shops, search_products, create_cart, update_cart, get_cart, request_refund, connect_paypal, wallet_status, pay_with_paypal)
- [Shops API (OpenAPI)](https://sayso-ovph.onrender.com/openapi.yaml): the same as REST, with PayPal's merchant-cart spec per shop
- [Developer portal](https://sayso-ovph.onrender.com/developers): guides, SDKs and a console for the API

## Shops

- [ceramic art](https://sayso-ovph.onrender.com/shop/ceramic-art-68b0): home/kitchen, ships from US, prices in USD. MCP: https://sayso-ovph.onrender.com/api/shops/ceramic-art-68b0/mcp · merchant-cart: https://sayso-ovph.onrender.com/api/shops/ceramic-art-68b0/merchant-cart
- [Terra Clay Studio](https://sayso-ovph.onrender.com/shop/sayso-c0ef): home/kitchen, home/decor, ships from US, prices in USD. MCP: https://sayso-ovph.onrender.com/api/shops/sayso-c0ef/mcp · merchant-cart: https://sayso-ovph.onrender.com/api/shops/sayso-c0ef/merchant-cart
- [Maya Ceramics](https://sayso-ovph.onrender.com/shop/maya-ceramics): home/kitchen, home/decor, ships from US, prices in USD. MCP: https://sayso-ovph.onrender.com/api/shops/maya-ceramics/mcp · merchant-cart: https://sayso-ovph.onrender.com/api/shops/maya-ceramics/merchant-cart

## Optional

- [For owners](https://sayso-ovph.onrender.com/start): turn photos or a price list into a shop your own agent runs
- [Seller MCP server](https://sayso-ovph.onrender.com/api/mcp): for the owner's own agent, with OAuth or a scoped key
- [Docs](https://sayso-ovph.onrender.com/docs): how the owner's agent, Guard, the say-so and PayPal's webhooks work