Bring Ai Calling
to Mastra AI
Learn how to connect Vibrato to Mastra AI and start using 5 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
What is the Vibrato MCP Server?
Connect your Vibrato account to any AI agent to unlock human-like phone interaction capabilities. Vibrato provides a powerful API for programmatically initiating AI-powered calls to handle complex real-world tasks like negotiating cable bills, booking doctor appointments, or inquiring about business hours.
What you can do
- AI-Powered Calling — Start new phone calls by providing a natural language prompt and the target phone number
- Template-Based Tasks — Use predefined task templates (e.g., 'Negotiate Comcast Bill') for high-success rate automations
- Real-time Status Tracking — Monitor the status of your calls and retrieve live transcripts and final summaries
- Call Library Management — List all your previous AI calls and access their detailed recordings and metadata
- Global Locale Support — Initiate calls in different languages and locales to reach businesses worldwide
How it works
1. Subscribe to this server
2. Enter your Vibrato API Key from your account settings at getvibrato.com
3. Start automating your phone tasks from Claude, Cursor, or any MCP client
Who is this for?
- Personal Productivity — automate tedious phone calls for bill negotiation and personal scheduling
- Business Operations — scale outbound inquiries and customer follow-ups using AI voice agents
- Developers — integrate real-time voice automation and calling intelligence into custom applications
Built-in capabilities (5)
Pass prompt, phone number, and locale in the JSON body. Create an AI-powered phone call
g., Negotiate Bill). Initiate a call using a template
Check status of a call
List all AI calls
List available call templates
Why Mastra AI?
Mastra's agent abstraction provides a clean separation between LLM logic and Vibrato tool infrastructure. Connect 5 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.
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Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add Vibrato without touching business code
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Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
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TypeScript-native: full type inference for every Vibrato tool response with IDE autocomplete and compile-time checks
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One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
Vibrato in Mastra AI
Vibrato and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect Vibrato to Mastra AI through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Vibrato in Mastra AI
The Vibrato 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. All 5 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Mastra AI only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* 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
How Vinkius secures
Vibrato for Mastra AI
Every tool call from Mastra AI to the Vibrato MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
How do I get my Vibrato API Key?
Log in to your account at getvibrato.com, navigate to the API Keys section, and copy your unique secret key.
Does it provide call recordings?
Yes, you can access call recordings and live transcripts through the get_call_status tool once a call is in progress or completed.
Can I use custom prompts?
Absolutely. The create_call tool allows you to provide a custom natural language prompt to define exactly what the AI should achieve during the call.
How does Mastra AI connect to MCP servers?
Create an 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?
Yes. Pass multiple MCP clients to the agent constructor. Mastra merges all tool schemas and the agent can call any tool from any server.
Does Mastra support workflow orchestration?
Yes. Mastra has a built-in workflow engine that lets you chain MCP tool calls with branching logic, error handling, and parallel execution.
createMCPClient not exported
Install: npm install @mastra/mcp