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ValidKit Email Validation

@ValidKit

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About ValidKit Email Validation

MCP server for ValidKit email validation. Works with Claude Code, Cursor, Windsurf, and any MCP-compatible AI assistant

#email-validation#email-verification#mcp#claude#cursor#windsurf#developer-tools

Basic information

Category

Communication

License

MIT

Runtime

node

Transports

stdio

Publisher

ValidKit

Submitted by

ValidKit

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "validkit": {
      "command": "npx",
      "args": [
        "-y",
        "@validkit/mcp-server"
      ],
      "env": {
        "VALIDKIT_API_KEY": "<YOUR_API_KEY>"
      }
    }
  }
}

Tools

3

Validate a single email address. Returns deliverability status, syntax/DNS/MX checks, disposable/role/free detection, and typo suggestions.

Validate multiple email addresses in a single request (up to 1000). Returns individual results and a summary with valid/invalid/unknown counts.

Check your ValidKit API usage stats for the current period. Returns total requests, valid/invalid counts, average response time, and rate limit.

Overview

What is ValidKit Email Validation?

ValidKit Email Validation is a Model Context Protocol (MCP) server that integrates the ValidKit email validation API into AI assistants like Claude Code, Cursor, Windsurf, and Claude Desktop. It performs syntax checks, MX record verification, disposable email detection, and typo suggestions directly from the editor.

How to use ValidKit Email Validation?

Install by adding the server configuration to your MCP client (Claude Code, Cursor, Windsurf, or Claude Desktop) using npx -y @validkit/mcp-server and setting the VALIDKIT_API_KEY environment variable. Invoke tools like validate_email, validate_emails_bulk, or check_usage via natural language commands.

Key features of ValidKit Email Validation

  • Syntax, MX, and DNS email validation
  • Disposable, role, and free email detection
  • Typo suggestions for common misspellings
  • Bulk validation of up to 1,000 emails per request
  • Usage statistics and rate limit monitoring
  • Works with any MCP-compatible AI assistant

Use cases of ValidKit Email Validation

  • Validate a single email address during development or customer support
  • Clean bulk email lists before sending campaigns
  • Check API usage and remaining quota from within an editor
  • Automate email verification in AI‑powered workflows

FAQ from ValidKit Email Validation

What does ValidKit Email Validation check?

It checks email syntax, DNS records, MX server existence, and detects disposable, role‑based, and free email addresses. It also suggests typo corrections.

What are the dependencies and runtime requirements?

Node.js is required to run the server via npx. A ValidKit API key is mandatory; sign up at validkit.com/get-started for a free tier with 1,000 validations per month.

Where does email data get processed?

Email addresses are sent to the ValidKit API (default: https://api.validkit.com) for validation. No data is stored locally by the MCP server.

Are there any limits on usage?

The free plan includes 1,000 validations per month. The validate_emails_bulk tool accepts up to 1,000 emails per request. Rate limits apply per API key.

How is the server accessed and authenticated?

The server runs locally via stdio transport using npx. Authentication is handled by the VALIDKIT_API_KEY environment variable. No additional auth mechanisms are required.

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