AptLynxMCP server
Deliverability Doctor
io.github.Integrity-Os/deliverability-doctor
Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools
Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
Working at last checkAbout 261 tokens per request once connected2 tools
https://deliverability-doctor.deliverability-doctor.workers.dev/mcp
At a glance
- Type
- MCP server
- Publisher
- Not verified
- Status
- Working at last check
- Tools
- 2
- Token cost
- About 261 tokens per request
- Sets up in
- Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
- Last checked
- 26 Oct 2026, 08:29 UTC
Connect it to your agent
Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.
Claude Code
claude mcp add --transport http deliverability-doctor https://deliverability-doctor.deliverability-doctor.workers.dev/mcp
Claude Desktop
Settings → Connectors → Add custom connector, and paste the URL.
Codex (config.toml)
[mcp_servers.deliverability-doctor] url = "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
Gemini CLI
{"mcpServers":{"deliverability-doctor":{"httpUrl":"https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"}}}
Cursor
{"mcpServers":{"deliverability-doctor":{"url":"https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"}}}
VS Code
{"servers":{"deliverability-doctor":{"type":"http","url":"https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"}}}
Antigravity
agy mcp add deliverability-doctor https://deliverability-doctor.deliverability-doctor.workers.dev/mcp
ChatGPT
Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.
OpenAI API (Responses tools)
{"type":"mcp","server_label":"deliverability-doctor","server_url":"https://deliverability-doctor.deliverability-doctor.workers.dev/mcp","require_approval":"always"}
Grok (xAI API tools)
{"type":"mcp","server_label":"deliverability-doctor","server_url":"https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"}
Tools
check_email_security~152 tokens
Checks whether a domain can be email-spoofed, using public DNS only. Verifies SPF (including the RFC 7208 multiple-record permerror), DMARC policy and reporting, MX, and DKIM at common selectors. Returns a graded report with concrete fixes. Accepts a bare domain, a URL, or an email address. Nothingcompare_email_security~109 tokens
Runs the email-security check on 2–5 domains and returns a comparison table with per-domain grades. Useful for checking your domain against competitors.
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