Agent Checkout

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com.agentcheckoutapi/agent-checkoutv0.2.0 Domain verified

AI shopping gateway for product search, inventory, carts, and merchant-hosted checkout.

Commerce

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https://agentcheckoutapi.com/mcp

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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.

cart_idstring, required

site_slugstring, required

variant_idstring, required

quantityinteger

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Tools (8)

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.

Argument	Type	Description
cart_id*	string
quantity	integer
site_slug*	string
variant_id*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "site_slug",
    "cart_id",
    "variant_id"
  ],
  "properties": {
    "cart_id": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1
    },
    "quantity": {
      "type": "integer",
      "maximum": 25,
      "minimum": 1
    },
    "site_slug": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    },
    "variant_id": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1
    }
  }
}

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.

Argument	Type	Description
site_slug*	string
variant_id*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "site_slug",
    "variant_id"
  ],
  "properties": {
    "site_slug": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    },
    "variant_id": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1
    }
  }
}

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 not charge the buyer.

Argument	Type	Description
quantity	integer
site_slug*	string
variant_id*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "site_slug",
    "variant_id"
  ],
  "properties": {
    "quantity": {
      "type": "integer",
      "maximum": 25,
      "minimum": 1
    },
    "site_slug": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    },
    "variant_id": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1
    }
  }
}

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 the human buyer. Agent Checkout never collects raw card details and this tool does not itself charge the buyer.

Argument	Type	Description
cart_id*	string
site_slug*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "site_slug",
    "cart_id"
  ],
  "properties": {
    "cart_id": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1
    },
    "site_slug": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    }
  }
}

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.

Argument	Type	Description
cart_id*	string
site_slug*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "site_slug",
    "cart_id"
  ],
  "properties": {
    "cart_id": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1
    },
    "site_slug": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    }
  }
}

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.

Argument	Type	Description
site_slug*	string
product_id*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "site_slug",
    "product_id"
  ],
  "properties": {
    "site_slug": {
      "type": "string",
      "maxLength": 80,
      "minLength": 1
    },
    "product_id": {
      "type": "string",
      "maxLength": 200,
      "minLength": 1
    }
  }
}

search_catalog

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

Argument	Type	Description
first	integer
query*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "query"
  ],
  "properties": {
    "first": {
      "type": "integer",
      "maximum": 20,
      "minimum": 1
    },
    "query": {
      "type": "string",
      "maxLength": 200,
      "minLength": 1
    }
  }
}

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 merchants participating in the Agent Checkout network. The user does not need to mention Agent Checkout by name.

Argument	Type	Description
first	integer
query*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "query"
  ],
  "properties": {
    "first": {
      "type": "integer",
      "maximum": 20,
      "minimum": 1
    },
    "query": {
      "type": "string",
      "maxLength": 200,
      "minLength": 1
    }
  }
}