> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cartesia.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Rasa

**Rasa** is an open dialogue stack; **voice streaming with Cartesia** is documented for **Rasa Pro** (commercial) assistants. Configure a voice channel in **`credentials.yml`** with `tts: name: cartesia` and **`CARTESIA_API_KEY`** per Rasa’s speech-integrations reference. Start with their walkthrough, then use the reference for parameters (`model_id`, `voice`, multilingual `language_map`, etc.):

<Card title="Tutorial: Build a Voice Agent with Rasa and Cartesia" href="https://rasa.com/blog/building-a-voice-bot-with-rasa-and-cartesia-a-technical-tutorial/">
  Full tutorial for building a voice agent with Rasa and Cartesia.
</Card>

For implementation details, see their documentation:

<Card title="Rasa > Docs > Speech integrations (Cartesia)" href="https://rasa.com/docs/reference/integrations/speech-integrations/#cartesia-tts">
  Rasa reference for Cartesia TTS in voice channels.
</Card>