ucp_register_webhook

{
    "type": "object",
    "required": [
        "webhook_url",
        "platform_id"
    ],
    "properties": {
        "events": {
            "type": "array",
            "items": {
                "enum": [
                    "order.created",
                    "order.status_changed",
                    "order.updated"
                ],
                "type": "string"
            },
            "default": [
                "order.created",
                "order.status_changed"
            ],
            "description": "Event types to subscribe to"
        },
        "platform_id": {
            "type": "string",
            "description": "Unique platform identifier"
        },
        "webhook_url": {
            "type": "string",
            "format": "uri",
            "description": "HTTPS URL for webhook delivery"
        },
        "signing_keys": {
            "type": "object",
            "required": [
                "primary"
            ],
            "properties": {
                "primary": {
                    "type": "string",
                    "description": "Primary public key (PEM format) for signature verification"
                },
                "fallback": {
                    "type": "string",
                    "description": "Optional fallback public key for key rotation"
                }
            },
            "description": "Public keys for webhook signature verification"
        }
    }
}