Hi everyone, I really need help. I want to connect another speech service that is NOT in the current Vapi “Voice Configuration” or “Transcriber” provider list. Example: I want to use Yandex SpeechKit for Uzbek language (both TTS & ASR). The problem: • I checked the Dashboard → Assistants → Edit → Voice / Transcriber — but I can only select from the built-in providers (Azure, Deepgram, Google, etc.). • I read in docs about "custom-transcriber" and WSS connection, but I cannot find anywhere in my account to set it up (no "Custom" option in dropdown, no code editing or config place in UI). • I also couldn’t find any clear example in the docs showing where exactly to put the WebSocket URL or custom provider in the Dashboard or via API. Question: 1. How can I add my own speech provider like Yandex SpeechKit if it’s not in the list? 2. Is “custom-transcriber” only available through API or do I need Vapi team to enable it? 3. If only API, can you please give me a working JSON or curl example showing exactly how to set

provider: "custom-transcriber"

and

server.url

? 4. Is there any tutorial or example project for connecting a non-listed TTS/ASR like Yandex? I’m stuck on this for a long time — any step-by-step guidance would be amazing.