Hi! 👋 Quick question – is it possible to upload Custom Voices to VAPI via API instead of the UI? If yes, which endpoint / file format should we use, and is there any required metadata? We want to automate sending recordings from our server directly to VAPI for custom voice creation. Thanks!

You can upload custom voice recordings to Vapi via the /file API endpoint and automate TTS by hosting your own synthesis server, which vapi calls with text and expects raw PCM audio in return, just configure the assistant with your endpoint, headers, and secret..