drwho.me MCP MCP server

An official MCP server providing 60 free developer and network diagnostic tools, including DNS, email authentication (SPF, DKIM, DMARC), TLS, headers, WHOIS, and utility functions like base64 encoding and JWT decoding, requiring no API key or account.

Endpoint and access

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

No sign-inEndpoint checked 2026-10-05Operated by Domain Posture

MCP endpoint (Streamable HTTP)

https://drwho.me/mcp/mcp

Vendor documentation

What you can do with it

Run parallel DNS, email-authentication, and TLS checks on a domain
Fetch and parse SPF, DMARC, and DKIM records for security auditing
Look up domain registrar details and Certificate Transparency logs
Decode JWTs and format JSON for development debugging

Tools advertised by the last live check:

dossier_summary
dossier_dns
dossier_mx
dossier_spf
dossier_dmarc
dossier_dkim
dossier_dnssec
dossier_tlsrpt
dossier_mta_sts
dossier_tls
dossier_redirects
dossier_headers
dossier_cors
dossier_web_surface
dossier_ai_crawlers
dossier_llms_txt
dossier_security_txt
dossier_whois
dossier_ct_log
dns_lookup
ip_lookup
user_agent_parse
base64_encode
base64_decode
jwt_decode
json_format
url_encode
url_decode
uuid_generate

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 drwho-me-mcp https://drwho.me/mcp/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 drwho-me-mcp --url https://drwho.me/mcp/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "drwho-me-mcp": {
      "url": "https://drwho.me/mcp/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": {
    "drwho-me-mcp": {
      "type": "streamableHttp",
      "url": "https://drwho.me/mcp/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "drwho-me-mcp": {
      "type": "http",
      "url": "https://drwho.me/mcp/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 drwho-me-mcp https://drwho.me/mcp/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": {
    "drwho-me-mcp": {
      "url": "https://drwho.me/mcp/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": {
    "drwho-me-mcp": {
      "serverUrl": "https://drwho.me/mcp/mcp"
    }
  }
}

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