DMARKOFF — DMARC, SPF & DKIM Analytics MCP server

DMARKOFF MCP

DMARC analytics inside your AI assistant.

DMARKOFF MCP connects your DMARC monitoring data to AI assistants — Claude, ChatGPT, Cursor, Windsurf — through the Model Context Protocol. Instead of opening a dashboard and building filters, you ask a question and get an answer with real numbers behind it.

Endpoint: https://mcp.dmarkoff.com/mcp Requires: an active DMARKOFF account and an API key from app.dmarkoff.com/account/mcp

What it looks like in practice

"Which domains dropped in compliance over the last 14 days?"

The AI checks health across all your projects and surfaces the ones that changed — ranked by how much.

"Why is SPF failing on acme-transact.com? Who's the problem sender?"

The AI checks return paths, finds the sending source (say, SendGrid using its own bounce domain instead of yours), and tells you what to fix.

"Anything unusual in email traffic compared to last week?"

The AI compares yesterday's stats against a 14-day baseline — compliance rate, unknown sender volume, message counts. The kind of check most teams skip because setting it up manually takes too long.

Quick connect

Claude.ai

1. Settings → Connectors → Add custom connector
2. URL: https://mcp.dmarkoff.com/mcp
3. Advanced settings:

• OAuth Client ID: claude (any value)
• OAuth Client Secret: your DMARKOFF API key

1. Click Add, then Connect

Works on Free (1 custom connector limit), Pro, Max, Team, and Enterprise.

Claude Desktop

Click + in the chat window → Connectors → Manage Connectors → Add custom connector, paste the URL, complete the OAuth flow.

Or edit the config file (~/Library/Application Support/Claude/claudedesktopconfig.json on macOS):

{
  "mcpServers": {
    "dmarkoff": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://mcp.dmarkoff.com/mcp",
        "--header",
        "Authorization: Bearer YOUR_API_KEY"
      ]
    }
  }
}

Claude Code

claude mcp add --transport http dmarkoff https://mcp.dmarkoff.com/mcp \
  --header "Authorization: Bearer YOUR_API_KEY"

Cursor

Settings → Tools & MCP → Add new MCP server, select Streamable HTTP, enter the URL.

Or edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "dmarkoff": {
      "url": "https://mcp.dmarkoff.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

ChatGPT (Business / Enterprise / Edu)

Enable Developer Mode, then go to Settings → Apps → Create App:

• MCP Server URL: https://mcp.dmarkoff.com/mcp
• Auth type: OAuth
• Client ID: chatgpt
• Client Secret: your DMARKOFF API key
• Authorization URL: https://mcp.dmarkoff.com/oauth/authorize
• Token URL: https://mcp.dmarkoff.com/oauth/token
• Scope: leave empty — the server issues unscoped tokens

Windsurf

Edit ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "dmarkoff": {
      "serverUrl": "https://mcp.dmarkoff.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Note: Windsurf uses serverUrl, not url.

→ Full connection guide for all clients

Things to ask

Shortened. The full README is on GitHub.