INDIVIDUAL MCP TOOL

check_email_security

Check whether a domain is protected against email spoofing: looks up SPF, DMARC, MX, and DKIM records via DNS and returns a verdict (protected / partial / spoofable) with per-mechanism explanations and the raw records.

essentials.shnone authenticationAvailability not checked

LIVE ENDPOINT

https://essentials.sh/mcp

No auth detected

Connect to this endpoint to inspect the live schema for check_email_security and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Potential side effects detected · medium confidence · heuristic, not a guarantee.

A tool name or description suggests sending messages.

Parent server

essentials.sh

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.essentials-sh]
url = "https://essentials.sh/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "essentials-sh": {
      "type": "http",
      "url": "https://essentials.sh/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: essentials-sh
Remote MCP URL: https://essentials.sh/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "essentials-sh": {
      "url": "https://essentials.sh/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "essentials-sh": {
      "type": "http",
      "url": "https://essentials.sh/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "essentials-sh",
  "transport": "streamable-http",
  "url": "https://essentials.sh/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

generate_qr_svg — Generate a QR code for a URL and return it as an SVG document.
build_meta_tags — Build a complete HTML head metadata block: title, description, canonical, Open Graph, and Twitter card tags.
build_robots_txt — Build a robots.txt with AI Content Signals (search/ai-input/ai-train), optional Disallow paths, and optional hard blocks for known AI-training crawlers.
build_sitemap — Build a sitemap.xml from a site URL and a list of page paths (or absolute URLs).
scan_site — Fetch a public website and report which essentials are missing — 19 checks: title, description, mobile viewport, canonical, Open Graph tags, OG image loads, Twitter card, image alt text, favicon, custom 404 page (soft-404 detection), privacy policy, robots.txt, AI Content Signals, sitemap, llms.txt, JSON-LD, security.txt, email spoofing protection.
build_llms_txt — Build an llms.txt document (per llmstxt.org): H1 name, blockquote summary, optional prose, and H2 sections of markdown links.