Ask Wix whether it offers an agent door (an MCP server or an API).
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A customer's assistant can ask you a question and come back for your answer, instead of telling them to call.
Add send_message to your MCP server, or publish an A2A agent card at /.well-known/agent-card.json.
Publish a door that takes messages: an A2A agent card, a send_message tool on an MCP server, or an agent inbox.
What counts: send_message, contact, ask_question, create_support_ticket, POST /messages. An agent inbox, an A2A agent card, or a tool that sends you a message or opens a support ticket, on an MCP server of your own or one your UCP profile declares as a service. Email, phone, forms and chat widgets are made for people, so they don't count.