Email Auth Checker
mcp remote · streamable-http · v1.0.0 · source: crawl
https://email-auth-check.quietworklabs.workers.dev/mcp
SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts.
Works
100
Verified Oct 31, 2026 · p50 506 ms · p95 651 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'dev.workers.quietworklabs.email-auth-check/email-auth-check' |
| tools_listed | 15 | pass | 4 tools |
| schema_complete | 15 | pass | 4 of 4 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 506 ms |
| latency_p95 | 5 | pass | p95 651 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (4)
| Name | Description | Schema |
|---|---|---|
email_auth_report | Full email-auth report for a domain: SPF (recursive 10-lookup count, void lookups, +all/?all, terms after all), DMARC (policy, pct, alignment, rua authorization), DKIM (keys and RSA key bits at common | typed |
spf_lookup_count | Expands a domain's SPF record recursively (include/redirect) like a receiver does and counts DNS-querying terms against the RFC 7208 limit of 10 and void lookups against the limit of 2. Returns per-te | typed |
dmarc_check | Finds and validates a domain's DMARC record (falls back to the organizational domain): policy, subdomain policy, pct, alignment modes, rua/ruf, and whether external report domains authorized reports ( | typed |
domain_expiry | Registration data for a domain from the registry's RDAP server (IANA bootstrap): registrar, created/updated/expiry dates, days until expiry with ok/expiring_soon/expired status, EPP status codes, name | typed |
Badge
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[](https://app.agent-xm.com/a/dev-workers-quietworklabs-email-auth-check-email-auth-check)
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