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mcp/harbor
Grok

Email Check for Grok

io.github.dawaxwx/email-check

Fast email validation at the edge: syntax, MX records, disposable-domain detection.

client:Grok transport:streamable-http

Install Email Check in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "email-check": {
      "type": "http",
      "url": "https://email-check.david-cyr.workers.dev/mcp"
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Email Check in other clients

Email Check MCP server