Hi A.G | Ant,
Yes, you can use the API to embed a widget on your website for testing calls and chats before going live. The Vapi Web Widget allows you to add AI chat and voice capabilities to your website easily. You can customize its appearance and configure it to match your testing needs. For more details on setting up the widget, refer to the [Web widget documentation](
https://docs.vapi.ai/chat/web-widget).
Regarding limitations:
- **Call concurrency**: Ensure you manage your usage and API key limits.
- **Visitor authentication**: This depends on your implementation to interface with any auth systems.
- **Voice choices**: The widget supports voice mode with full voice conversations and transcription.
For customization, you can adjust themes, colors, and text labels to align with your branding. Currently, deeper UI branding and data capture customizations are not extensively covered, but they're likely part of ongoing improvements. Stay tuned for roadmap updates directly from Vapi.
If you need detailed steps on embedding and testing configurations, reviewing the widget documentation linked above should be helpful.