# Cartesia Line SDK
Build intelligent, low-latency voice agents with background reasoning.
**With Line you can,**
- **Create** your first voice agent from scratch, **deploy**, and **talk to it in under 5 minutes**.
- **Turn any existing chatbot** or text agent you've already built into a low-latency voice agent.
- **Spin up common use cases** for support or scheduling from **ready-made templates**.
- **Deploy production-ready systems** with auto-scaling, telephony integration, metrics, and call analytics.
**Why Line?**
- 🔗 **Event-driven design** to easily define multi-agent architectures with powerful background reasoning.
- ⚡ **State-of-the-art voice models** using Sonic TTS and Ink STT deliver the lowest latency voice experience.
- 📋 **Pre-built templates** for common use cases like customer support, sales agents, form filling, and more.
- 🔌 **Easy integrations** with tools, MCPs, and other frameworks out of the box.
- 🤝 **Support for handoffs** between agents and humans.
- 🧠 **Reasoning agnostic** works with any LLM, text agent, or chatbot code.
- 🚀 **Instant deployment** so you can build, deploy, and start talking in minutes with no infrastructure setup.
## Quickstart (< 5 minutes)
The Line SDK is designed to be used with the Cartesia's voice agent platform [Line](https://cartesia.ai/agents).
- Create a [Cartesia account](https://play.cartesia.ai).
- Follow the [quickstart guide](https://docs.cartesia.ai/line/start-building/talk-to-your-first-agent).
And you'll be able to make your first voice call in a few minutes.
## Install the SDK
```zsh
pip install cartesia-line
```
## Common Use Cases
| Use Case | Example |
|----------|---------|
| **Basic chat** | [examples/basic_chat/](examples/basic_chat/) |
| **Form filling** | [examples/form-filling/](examples/form-filling/) |
| **Background reasoning** | [examples/sales_with_leads/](examples/sales_with_leads/) |
| **Support** | [examples/personal_banking_handoffs/](examples/personal_banking_handoffs/) |
## Going Deeper
- **More examples**: [examples/](examples/) - See all available examples and patterns
- **3rd party integrations**: [example_integrations/](example_integrations/) - See example integrations for external services
> [!NOTE]
> While Cartesia approves each example, they are implemented and maintained by our partners.
- **Full API reference**: [docs.cartesia.ai/line](https://docs.cartesia.ai/line/)
- **Get help**: [Discord community](https://discord.gg/cartesia)
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"description": "# Cartesia Line SDK\n\nBuild intelligent, low-latency voice agents with background reasoning.\n\n**With Line you can,**\n- **Create** your first voice agent from scratch, **deploy**, and **talk to it in under 5 minutes**.\n- **Turn any existing chatbot** or text agent you've already built into a low-latency voice agent.\n- **Spin up common use cases** for support or scheduling from **ready-made templates**.\n- **Deploy production-ready systems** with auto-scaling, telephony integration, metrics, and call analytics.\n\n**Why Line?**\n\n- \ud83d\udd17 **Event-driven design** to easily define multi-agent architectures with powerful background reasoning.\n- \u26a1 **State-of-the-art voice models** using Sonic TTS and Ink STT deliver the lowest latency voice experience.\n- \ud83d\udccb **Pre-built templates** for common use cases like customer support, sales agents, form filling, and more.\n- \ud83d\udd0c **Easy integrations** with tools, MCPs, and other frameworks out of the box.\n- \ud83e\udd1d **Support for handoffs** between agents and humans.\n- \ud83e\udde0 **Reasoning agnostic** works with any LLM, text agent, or chatbot code.\n- \ud83d\ude80 **Instant deployment** so you can build, deploy, and start talking in minutes with no infrastructure setup.\n\n## Quickstart (< 5 minutes)\n\nThe Line SDK is designed to be used with the Cartesia's voice agent platform [Line](https://cartesia.ai/agents).\n- Create a [Cartesia account](https://play.cartesia.ai).\n- Follow the [quickstart guide](https://docs.cartesia.ai/line/start-building/talk-to-your-first-agent).\n\nAnd you'll be able to make your first voice call in a few minutes.\n\n## Install the SDK\n\n```zsh\npip install cartesia-line\n```\n\n\n## Common Use Cases\n\n| Use Case | Example |\n|----------|---------|\n| **Basic chat** | [examples/basic_chat/](examples/basic_chat/) |\n| **Form filling** | [examples/form-filling/](examples/form-filling/) |\n| **Background reasoning** | [examples/sales_with_leads/](examples/sales_with_leads/) |\n| **Support** | [examples/personal_banking_handoffs/](examples/personal_banking_handoffs/) |\n\n## Going Deeper\n\n- **More examples**: [examples/](examples/) - See all available examples and patterns\n- **3rd party integrations**: [example_integrations/](example_integrations/) - See example integrations for external services\n\n > [!NOTE]\n > While Cartesia approves each example, they are implemented and maintained by our partners.\n- **Full API reference**: [docs.cartesia.ai/line](https://docs.cartesia.ai/line/)\n- **Get help**: [Discord community](https://discord.gg/cartesia)\n",
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