io.github.Integrity-Os/deliverability-doctor is an MCP server with 2 tools an agent can call, among them check_email_security, compare_email_security. It answers at https://deliverability-doctor.deliverability-doctor.workers.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 20 October 2026, succeeded.
Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
check_email_security | 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. Inputs: domain |
compare_email_security | 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. Inputs: domains |
Every block below points at https://deliverability-doctor.deliverability-doctor.workers.dev/mcp. Pick your client and copy.
claude mcp add --transport http io-github-integrity-os-deliverab https://deliverability-doctor.deliverability-doctor.workers.dev/mcp
{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"]
}
}
}{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}{
"servers": {
"io-github-integrity-os-deliverab": {
"type": "http",
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}{
"context_servers": {
"io-github-integrity-os-deliverab": {
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"serverUrl": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}name: io.github.Integrity-Os/deliverability-doctor
version: 0.0.1
schema: v1
mcpServers:
- name: io.github.Integrity-Os/deliverability-doctor
type: streamable-http
url: https://deliverability-doctor.deliverability-doctor.workers.dev/mcp{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"httpUrl": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"type": "http",
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-integrity-os-deliverab": {
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fdeliverability-doctor.deliverability-doctor.workers.dev%2Fmcp&type=streamable_http&id=io-github-integrity-os-deliverab&name=io.github.Integrity-Os/deliverability-doctor
It answered our last check on 20 October 2026 in 141 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
2, as returned by the server's own tools/list on 12 September 2026: check_email_security, compare_email_security.
It answered our last check on 20 October 2026 in 141 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://deliverability-doctor.deliverability-doctor.workers.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.integrity-os. Endpoint host: deliverability-doctor.deliverability-doctor.workers.dev. ARD identifier: urn:air:io.github.integrity-os:mcp:deliverability-doctor.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.