Agent Checkout

Tools

Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called.

• search_products

  Primary shopping entry point. Use when a user wants to find, browse, compare, recommend, price-check, check availability of, shop for, or buy a physical product. Searches purchasable products across m

• search_catalog

  Legacy alias for search_products. Search purchasable products across participating merchants. Prefer search_products for new shopping requests.

• get_product

  Get detailed product and variant information after search_products identifies a product and merchant. Use before purchase when the user needs details, options, price, or variant information.

• check_inventory

  Check whether a selected product variant is currently sellable and available. Use when availability matters or immediately before adding a selected variant to a cart.

• create_cart

  Create a new Agent Checkout-attributed cart with a selected product variant. Use only after the user has chosen a specific product or clearly asked to add/buy it. This prepares the purchase but does n

• add_to_cart

  Add another selected product variant to an existing Agent Checkout cart. Use when the user explicitly wants another item or quantity added to an existing cart. This does not charge the buyer.

• get_cart

  Read the current Agent Checkout cart contents and totals. Use to review or confirm the cart before handing the buyer off to checkout.

• create_checkout

  Prepare the final buyer handoff by returning the merchant-hosted HTTPS checkout URL. Use when the user has a cart and clearly wants to proceed to checkout or purchase. Always surface checkoutUrl to th