The official Cartesia MCP server allowing MCP-compatible clients (Cursor, Claude Desktop, OpenAI agents, etc.) to access Cartesia’s speech/voice API (list voices, TTS, localization, infill, voice-changing …).
https://github.com/cartesia-ai/cartesia-mcpStop switching between tools when you need quality speech synthesis. The official Cartesia MCP server brings enterprise-grade text-to-speech directly into Claude Desktop, Cursor, and OpenAI agents—no context switching required.
Building applications with speech features typically means juggling multiple browser tabs, API documentation, and audio testing tools. You write code in your IDE, jump to a speech service dashboard to test voices, download files, move them around, then back to code to integrate. It's workflow fragmentation at its finest.
This MCP server eliminates that dance. Ask Claude to generate speech samples while you're already discussing your implementation. Test different voices without leaving your conversation. Generate localized audio for international features right in your development chat.
Voice Exploration: Browse Cartesia's full voice library directly through your AI assistant. No more hunting through web interfaces to find the right voice for your project.
Instant TTS Generation: Convert any text to audio with a simple request. Perfect for rapid prototyping audio features or creating placeholder content during development.
Smart Audio Infilling: Seamlessly bridge audio gaps between existing segments. Specify your local audio files, and get smooth transitions without manual audio editing.
Voice Transformation: Change existing audio to different voices while preserving the original speech patterns and timing.
Localization Pipeline: Convert speech content across languages while maintaining voice characteristics—invaluable for international product development.
Mobile App Development: You're building a language learning app and need to test different voice personalities for various lessons. Instead of manually generating dozens of audio samples, ask Claude to create a batch with different voices and compare them directly in your development discussion.
Podcast Tool Creation: Building a podcast editing platform? Generate voice samples for different narrator styles, create smooth transitions between segments, and test localization features—all while maintaining your development momentum.
Accessibility Feature Development: Adding voice navigation to your web app? Quickly generate and test different voice options for menu items, notifications, and user feedback without breaking your coding flow.
Game Development: Creating character voices or ambient audio? Generate multiple voice variations, test emotional ranges, and create voice placeholder content while discussing game mechanics and implementation details.
Installation takes two minutes:
pip install cartesia-mcp
Add one configuration block to your Claude Desktop or Cursor setup with your Cartesia API key, and you're generating professional audio through natural conversation.
The 20,000 monthly credits on Cartesia's free tier give you substantial room to experiment and build without immediately hitting usage limits.
This isn't just another text-to-speech integration. The voice infilling capability alone sets it apart—you can create seamless audio experiences by having the AI fill gaps between existing audio segments. Combined with voice changing features, you can maintain consistent narrator experiences across content that was recorded at different times or with different equipment.
The localization features mean you can rapidly prototype international versions of audio content, testing how your application's speech features work across different languages without manual voice actor coordination.
Ready to stop fragmenting your audio development workflow? The Cartesia MCP server transforms speech synthesis from a separate tool into a natural part of your development conversation.