Cartesia (Voice AI) MCP Server for Mastra AIGive Mastra AI instant access to 20 tools to Clone Voice, Create Pronunciation Dict, Delete Pronunciation Dict, and more
GDPR Free for SubscribersMastra AI is a TypeScript-native agent framework built for modern web stacks. Connect Cartesia (Voice AI) through Vinkius and Mastra agents discover all tools automatically. type-safe, streaming-ready, and deployable anywhere Node.js runs.
Ask AI about this MCP Server for Mastra AI
The Cartesia (Voice AI) MCP Server for Mastra AI is a standout in the Ai Frontier category — giving your AI agent 20 tools to work with, ready to go from day one.
Vinkius delivers Streamable HTTP and SSE to any MCP client
Geminiimport { Agent } from "@mastra/core/agent";
import { createMCPClient } from "@mastra/mcp";
import { openai } from "@ai-sdk/openai";
async function main() {
// Your Vinkius token. get it at cloud.vinkius.com
const mcpClient = await createMCPClient({
servers: {
"cartesia-voice-ai": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "Cartesia (Voice AI) Agent",
instructions:
"You help users interact with Cartesia (Voice AI) " +
"using 20 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with Cartesia (Voice AI)?"
);
console.log(result.text);
}
main();
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About Cartesia (Voice AI) MCP Server
Connect Cartesia to your AI agent to unlock high-performance voice synthesis and speech recognition. Cartesia's Sonic models provide industry-leading latency and quality for real-time applications.
Mastra's agent abstraction provides a clean separation between LLM logic and Cartesia (Voice AI) tool infrastructure. Connect 20 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.
What you can do
- Text-to-Speech (TTS) — Generate high-fidelity audio bytes or stream via SSE using models like Sonic 3.5 and Sonic 3.
- Speech-to-Text (STT) — Transcribe audio files into text using the Ink Whisper model with multi-language support.
- Voice Cloning — Create custom voice models from as little as 5 seconds of audio input.
- Voice Management — List, retrieve, and update voices, or use the Voice Changer to transform existing audio.
- Pronunciation Control — Manage custom pronunciation dictionaries for specialized terminology or accents.
- Agent Orchestration — List and manage AI agents and monitor call logs and usage credits.
The Cartesia (Voice AI) MCP Server exposes 20 tools through the Vinkius. Connect it to Mastra AI in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
All 20 Cartesia (Voice AI) tools available for Mastra AI
When Mastra AI connects to Cartesia (Voice AI) through Vinkius, your AI agent gets direct access to every tool listed below — spanning text-to-speech, speech-to-text, voice-synthesis, and more. Every call runs in a secure, isolated environment with full audit visibility. Beyond a simple connection, you get real-time monitoring of agent activity, enterprise governance, and optimized token usage.
Clone voice on Cartesia (Voice AI)
Clone a voice from a 5s audio clip
Create pronunciation dict on Cartesia (Voice AI)
Create a new pronunciation dictionary
Delete pronunciation dict on Cartesia (Voice AI)
Delete a pronunciation dictionary
Delete voice on Cartesia (Voice AI)
Delete a voice
Generate access token on Cartesia (Voice AI)
Generate a short-lived access token for client-side requests
Get agent on Cartesia (Voice AI)
Get details for a specific voice agent
Get usage credits on Cartesia (Voice AI)
Get credit usage statistics
Get voice on Cartesia (Voice AI)
Get details for a specific voice
Infill bytes on Cartesia (Voice AI)
Generate audio to smoothly connect two existing segments
List agent calls on Cartesia (Voice AI)
List calls and transcripts for a specific agent
List agents on Cartesia (Voice AI)
List all voice agents
List pronunciation dicts on Cartesia (Voice AI)
List pronunciation dictionaries
List voices on Cartesia (Voice AI)
List available voices
Localize voice on Cartesia (Voice AI)
Adapt a voice to a new language/dialect
Stt batch on Cartesia (Voice AI)
Transcribe audio file to text (Batch STT)
Tts bytes on Cartesia (Voice AI)
Generate text-to-speech audio bytes
Tts sse on Cartesia (Voice AI)
Generate text-to-speech via Server-Sent Events
Update pronunciation dict on Cartesia (Voice AI)
Update a pronunciation dictionary
Update voice on Cartesia (Voice AI)
Update voice metadata
Voice changer bytes on Cartesia (Voice AI)
Change voice of an audio clip while preserving intonation
Connect Cartesia (Voice AI) to Mastra AI via MCP
Follow these steps to wire Cartesia (Voice AI) into Mastra AI. The entire setup takes under two minutes — your credentials stay safe behind Vinkius.
Install dependencies
npm install @mastra/core @mastra/mcp @ai-sdk/openaiReplace the token
[YOUR_TOKEN_HERE] with your Vinkius tokenRun the agent
agent.ts and run with npx tsx agent.tsExplore tools
Why Use Mastra AI with the Cartesia (Voice AI) MCP Server
Mastra AI provides unique advantages when paired with Cartesia (Voice AI) through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add Cartesia (Voice AI) without touching business code
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
TypeScript-native: full type inference for every Cartesia (Voice AI) tool response with IDE autocomplete and compile-time checks
One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
Cartesia (Voice AI) + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the Cartesia (Voice AI) MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query Cartesia (Voice AI), process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed Cartesia (Voice AI) as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query Cartesia (Voice AI) on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using Cartesia (Voice AI) tools alongside other MCP servers
Example Prompts for Cartesia (Voice AI) in Mastra AI
Ready-to-use prompts you can give your Mastra AI agent to start working with Cartesia (Voice AI) immediately.
"List all available voices in my Cartesia account."
"Generate a WAV audio file saying 'Welcome to the future of AI' using voice ID 79a045e3-a621-4923-b05c-8029db0dffca."
"Check my current usage credits on Cartesia."
Troubleshooting Cartesia (Voice AI) MCP Server with Mastra AI
Common issues when connecting Cartesia (Voice AI) to Mastra AI through Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpCartesia (Voice AI) + Mastra AI FAQ
Common questions about integrating Cartesia (Voice AI) MCP Server with Mastra AI.
How does Mastra AI connect to MCP servers?
MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.Can Mastra agents use tools from multiple servers?
Does Mastra support workflow orchestration?
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