Site Check MCP

A read-only MCP connector that performs measured health checks on public websites. It scans for speed, security, domain validity, email configuration, search engine visibility, AI search readiness, and local presence scores, providing specific fixes for any issues found without requiring sign-in or storing user data.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-18Operated by Modern Mustard Seed

MCP endpoint (Streamable HTTP)

https://mcp.modernmustardseed.com/site-check

Vendor documentation

What you can do with it

Scan a website for speed, security, and trust metrics
Check AI search readiness and crawler permissions
Score local presence using business details and reviews
Explain specific check results and required fixes

Tools advertised by the last live check:

scan_website
check_ai_search_readiness
score_local_presence
explain_check

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http site-check-mcp-modernmustardseed https://mcp.modernmustardseed.com/site-check

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add site-check-mcp-modernmustardseed --url https://mcp.modernmustardseed.com/site-check

Cursor

Merge this server into .cursor/mcp.json in your project, then enable site-check-mcp-modernmustardseed in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "site-check-mcp-modernmustardseed": {
      "url": "https://mcp.modernmustardseed.com/site-check"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "site-check-mcp-modernmustardseed": {
      "type": "streamableHttp",
      "url": "https://mcp.modernmustardseed.com/site-check",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start site-check-mcp-modernmustardseed and inspect its tools.

VS Code configuration

{
  "servers": {
    "site-check-mcp-modernmustardseed": {
      "type": "http",
      "url": "https://mcp.modernmustardseed.com/site-check"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http site-check-mcp-modernmustardseed https://mcp.modernmustardseed.com/site-check

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "site-check-mcp-modernmustardseed": {
      "url": "https://mcp.modernmustardseed.com/site-check"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "site-check-mcp-modernmustardseed": {
      "serverUrl": "https://mcp.modernmustardseed.com/site-check"
    }
  }
}

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Do you run Site Check MCP?

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