shopping_cart_cancel
Cancel a merchant cart using an idempotency key.
Schema
Input Schema
{
"type": "object",
"required": [
"agent_id",
"merchant_domain",
"cart_id"
],
"properties": {
"cart_id": {
"type": "string",
"description": "Provider cart ID to cancel."
},
"agent_id": {
"type": "string",
"description": "Registered UCP Gateway UUID returned by register_ucp_profile; required for every Shopping tool."
},
"idempotency_key": {
"type": "string",
"description": "Optional UUID idempotency key for the cancel request; reuse only for retrying the same cancellation."
},
"merchant_domain": {
"type": "string",
"description": "Merchant host such as 'outboundpower.com' or 'example.myshopify.com'. Do not include a URL scheme, localhost, private IP, file URL, or ftp URL."
},
"client_action_id": {
"type": "string",
"description": "Optional UUID generated once for an explicit buyer/operator-confirmed cart or checkout mutation. Reuse only when retrying the same confirmed action."
}
},
"description": "Arguments for cancelling a cart.",
"additionalProperties": false
}
Verified Stores
1
Member Stores
Stores exposing the shopping_cart_cancel tool
Weekly UCP Report
Get the agentic commerce digest every Monday
Real adoption data, ecosystem trends, new spec versions, and the stores that broke or recovered this week. Read by founders and engineers building the next generation of commerce.
Weekly UCP Report
Issue #50 · Sep 14, 2026
+664
new verified stores
Verified rate
Latest spec
Cart capability
