MailerCheck MCP Server for Mastra AI 5 tools — connect in under 2 minutes
Mastra AI is a TypeScript-native agent framework built for modern web stacks. Connect MailerCheck through Vinkius and Mastra agents discover all tools automatically. type-safe, streaming-ready, and deployable anywhere Node.js runs.
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Vinkius supports streamable HTTP and SSE.
import { 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: {
"mailercheck": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "MailerCheck Agent",
instructions:
"You help users interact with MailerCheck " +
"using 5 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with MailerCheck?"
);
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 MailerCheck MCP Server
Connect your MailerCheck account to any AI agent to automate your email hygiene and deliverability workflows. This MCP server enables your agent to verify single email addresses instantly, manage batch verification lists, and monitor your account credits directly from natural language interfaces.
Mastra's agent abstraction provides a clean separation between LLM logic and MailerCheck 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.
What you can do
- Real-time Verification — Instantly check if an email address is valid, risky, or invalid before sending
- Batch Processing — Upload large lists of emails for asynchronous validation and track their progress
- Results Ingestion — Retrieve detailed status reports for completed batches, including reason codes for invalid emails
- History Oversight — List all recent verification batches and retrieve their technical metadata
- Account Auditing — Monitor your authenticated user details and remaining verification credits
The MailerCheck MCP Server exposes 5 tools through the Vinkius. Connect it to Mastra AI in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect MailerCheck to Mastra AI via MCP
Follow these steps to integrate the MailerCheck MCP Server with Mastra AI.
Install dependencies
Run npm install @mastra/core @mastra/mcp @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.ts and run with npx tsx agent.ts
Explore tools
Mastra discovers 5 tools from MailerCheck via MCP
Why Use Mastra AI with the MailerCheck MCP Server
Mastra AI provides unique advantages when paired with MailerCheck through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add MailerCheck 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 MailerCheck 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
MailerCheck + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the MailerCheck MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query MailerCheck, process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed MailerCheck as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query MailerCheck on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using MailerCheck tools alongside other MCP servers
MailerCheck MCP Tools for Mastra AI (5)
These 5 tools become available when you connect MailerCheck to Mastra AI via MCP:
create_verification_batch
Requires a name and a list of emails. Upload a list of emails for batch verification
get_account_info
Get account details and credit balance
get_batch_results
Retrieve the results for a specific batch
list_verification_batches
List all recent verification batches
verify_single_email
Requires an email string. Verify a single email address in real-time
Example Prompts for MailerCheck in Mastra AI
Ready-to-use prompts you can give your Mastra AI agent to start working with MailerCheck immediately.
"Verify the email address 'user@example.com' in MailerCheck."
"List all my recent verification batches."
"Show valid emails for batch ID '123'."
Troubleshooting MailerCheck MCP Server with Mastra AI
Common issues when connecting MailerCheck to Mastra AI through the Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpMailerCheck + Mastra AI FAQ
Common questions about integrating MailerCheck 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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Connect MailerCheck to Mastra AI
Get your token, paste the configuration, and start using 5 tools in under 2 minutes. No API key management needed.