Thanks for reaching out! I checked our available resources, but I couldn't find any information on how to add or edit 'filler_responses' in the Vapi voice assistant config—either in the UI or manually. Since this isn't covered in the docs, I'm escalating your question to a human teammate who can help you out. We'll get back to you as soon as possible!
(For reference, an assistant config in Vapi defines the transcriber, model, and voice components for your voice assistant [source](
https://discord.com/channels/1211482211119796234/1333975440003563604).)