Agent Checkout

• 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
• 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,
• 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
• 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 i
• 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.
• 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 pu

No long description beyond the summary.