Start payload is typically {"base_url":"...","channel":"..."} and the response includes agent_id. Stop payload is {"agent_id":"..."}. (This matches the public cURL examples.)
Leave empty if your endpoint doesn’t require headers. If needed, put one header per line as Key: Value (example: Authorization: Bearer <token>).
Tip: If you see CORS errors in the browser console, serve this page from a local server instead of file:// (example: python -m http.server 5500 then open http://localhost:5500).
The plugin often exposes a ready demo page at .../convoai-web/index.html. Click “Open built-in demo” to open it in a new tab, or paste its URL here to embed it: