DomainRef MCP

An official MCP server provided by DomainRef that allows AI agents to perform pay-per-call domain and email security checks. It verifies SPF, DKIM, DMARC, DNSSEC, BIMI, and other email infrastructure settings, providing actionable fixes for security misconfigurations.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

No sign-inEndpoint checked 2026-10-26Operated by DomainRef

MCP endpoint (Streamable HTTP)

https://domainref.dev/mcp

Vendor documentation

What you can do with it

Check domain email security configuration (SPF, DKIM, DMARC)
Verify DNSSEC validity and certificate status
Check domain age and blocklist status
Identify specific fixes for email security failures

Tools advertised by the last live check:

domain_check
domain_age

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 domainref-mcp https://domainref.dev/mcp

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 domainref-mcp --url https://domainref.dev/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "domainref-mcp": {
      "url": "https://domainref.dev/mcp"
    }
  }
}

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": {
    "domainref-mcp": {
      "type": "streamableHttp",
      "url": "https://domainref.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "domainref-mcp": {
      "type": "http",
      "url": "https://domainref.dev/mcp"
    }
  }
}

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 domainref-mcp https://domainref.dev/mcp

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": {
    "domainref-mcp": {
      "url": "https://domainref.dev/mcp"
    }
  }
}

Windsurf

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

Windsurf configuration

{
  "mcpServers": {
    "domainref-mcp": {
      "serverUrl": "https://domainref.dev/mcp"
    }
  }
}

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