Check if a domain can be email-spoofed: SPF, DMARC, DKIM, MX graded from public DNS. Authless.
Connect Remote server
claude mcp add --transport http deliverability-doctor https://deliverability-doctor.deliverability-doctor.workers.dev/mcp
{
"mcpServers": {
"deliverability-doctor": {
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}
{
"servers": {
"deliverability-doctor": {
"type": "http",
"url": "https://deliverability-doctor.deliverability-doctor.workers.dev/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://deliverability-doctor.deliverability-doctor.workers.dev/mcp
Tools 2 found in our last check
check_email_securityChecks 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 em…
compare_email_securityRuns the email-security check on 2–5 domains and returns a comparison table with per-domain grades. Useful for checking your domain against competitors.
Details
| Endpoint | https://deliverability-doctor.deliverability-doctor.workers.dev/mcp (Streamable HTTP) |
| First published | 25 Aug 2026 |
| Last updated | 25 Aug 2026 |
| Registry name | io.github.Integrity-Os/deliverability-doctor |
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