Input Schema

{
    "type": "object",
    "required": [
        "id"
    ],
    "properties": {
        "id": {
            "type": "string",
            "description": "Cart session ID to convert to a checkout session."
        },
        "meta": {
            "type": "object",
            "required": [],
            "properties": {
                "signature": {
                    "type": "string",
                    "description": "Optional detached JWS signature (RFC 7515 Appendix F) for message integrity."
                },
                "ucp-agent": {
                    "type": "object",
                    "required": [
                        "profile"
                    ],
                    "properties": {
                        "profile": {
                            "type": "string",
                            "format": "uri",
                            "description": "URL to the platform UCP profile document (/.well-known/ucp equivalent for the agent)."
                        }
                    },
                    "description": "Platform agent identification. Carries the platform UCP profile URI."
                },
                "idempotency-key": {
                    "type": "string",
                    "format": "uuid",
                    "description": "UUID for retry safety. Required on complete_checkout and cancel_checkout."
                }
            },
            "description": "Request metadata. Include ucp-agent for capability negotiation. idempotency-key is required on complete/cancel for retry safety."
        }
    }
}