Thank you 🙏, finally the right resource with all the information (I shouldn't have forgotten the Trieve API key, but it wasn't indicated in the other solutions...). But it's weird that API calls work even if you don't add the Trieve API key in VAPI. So the front-end displays the KB but in reality it doesn't work (many have this problem). So don't forget to add your Trieve key in VAPI - it'll finally work! 🤩