René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Google Text-to-Speech is not supported as a native voice provider in Vapi Server SDK","articleBody":"## Summary\nWhile integrating Vapi Server SDK for a voice assistant, I noticed that Google Text-to-Speech (TTS) is not available as a native `voice.provider`, even though Google is supported for transcription (`transcriber.provider = \"google\").  \nThis creates confusion for developers, especially since Google already provides a fully managed TTS API with public endpoints.\n\n### Expected Behavior\nDevelopers should be able to configure Google TTS directly, for example:\n\n```json\nvoice: {\n  \"provider\": \"google\",\n  \"voiceId\": \"bn-BD-Standard-A\"\n}\n```\n\nwithout needing to deploy an additional middleware or custom adapter.\n\n### Actual Behavior\n`voice.provider = \"google\"` is rejected with a validation error:`\n```text\n  voice.provider must be one of the following values: ...\n```\n\nThe only way to use Google TTS is via `custom-voice`, which requires:\n- Deploying an adapter server\n- Manually handling request/response transformation\n- Streaming raw PCM audio\n\nThis defeats the purpose of using an existing managed TTS service with a public endpoint.\n\n### Impact\n- Additional infrastructure and maintenance for developers\n- Increased complexity for simple use cases\n- Confusion since Google is supported for STT but not TTS\n- Harder adoption for regions where Google voices (e.g., Bangla `bn-BD`) are higher quality than other providers\n\n### Suggestion\nConsider adding native Google TTS support similar to Azure / ElevenLabs, or clearly document why Google TTS cannot be supported directly due to protocol or streaming constraints.\n\nEven limited support (non-streaming or buffered) would significantly improve developer experience.\n","author":{"url":"https://github.com/Pro-Sifat-Hasan","@type":"Person","name":"Pro-Sifat-Hasan"},"datePublished":"2026-01-14T05:59:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/20/server-sdk-python/issues/20"}