Live DNS & email auth checks
Scored across 2 tools
The split between an email-focused analysis tool and a general record lookup is reasonably clear from the descriptions, but both touch MX and TXT records, so an agent asking for 'MX lookup' or 'TXT lookup' could plausibly pick either tool. The 'do not use' guidance helps, but the overlap on MX/TXT keeps it from being fully distinct.
Both names are snake_case and lead with a verb (check_..., lookup_...), which establishes a predictable pattern. The internal ordering differs (check_email_dns vs lookup_dns_records), but this is a minor stylistic deviation rather than a real inconsistency.
Two tools is on the thin side for a 'DNS Checker,' though the narrow domain makes it defensible. A single tool for general lookups and one for email-specific checks leaves little room for other common DNS checks, making it borderline thin.
Forward lookups cover most record types and email DNS is well covered (SPF, DMARC, DKIM, MX), but notable gaps remain: no reverse/PTR lookup, no DNSSEC validation, no SRV records, and no propagation checks across resolvers. These omissions will cause dead ends for common DNS-checking requests.
Use this when the user wants an email DNS check, a DMARC checker, an SPF record checker, a DKIM checker, or an MX lookup for a domain. Reads the live public DNS records through DNS-over-HTTPS and returns MX hosts, the SPF record with its DNS-lookup count against the limit of 10, the DMARC policy, reporting and alignment, DKIM keys for the selectors you give, and a pass/warn/fail findings list with a fix and a CSV report. Do not use for internal DNS server visibility, full deliverability tests, or reading or sending mail.
Inputs: domain (required), dkim_selectors. Returns: mx, spf, dkim, dmarc, +8 more
Use this when the user wants a dns lookup, an mx record check, or a txt record lookup for a domain. Reads live public DNS records through DNS-over-HTTPS and returns A, AAAA, MX, NS, TXT, CNAME, CAA, and SOA records with their TTLs, plus a CSV report. Do not use for internal DNS server visibility, reverse DNS of an IP address, or records outside the supported type list.
Inputs: domain (required), types. Returns: total, types, counts, domain, +7 more
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Check a domain's SPF, DKIM, DMARC and MX from live DNS, the Gmail/Yahoo rules, and fix records.
Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.
Free live DNS, SPF/DMARC/MX, DKIM and WHOIS lookups for any domain. No key needed to start.
SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts.
Add one secure layer between your agents and this server.
