{"voice":"Emma listens. POST JSON-RPC 2.0 — message/send (A2A 0.3) or SendMessage (A2A 1.0). Create a site without a key; edit with your site key as Bearer token (Authorization header, or the first line of your message).","card":"https://stimhaus.ai/.well-known/agent-card.json","version":"stimhaus-agent-door-1"}