241 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
SPF mx mechanism(s) for a domain: mail exchangers allowed to send. Reads the SPF TXT record (Cloudflare DoH) and returns just the mx entries with their qualifiers, plus the full record and the DNS-lookup count. One-field...
SPF redirect mechanism(s) for a domain: the domain whose SPF replaces this one. Reads the SPF TXT record (Cloudflare DoH) and returns just the redirect entries with their qualifiers, plus the full record and the DNS-look...
SPF exists mechanism(s) for a domain: exists: macro mechanisms. Reads the SPF TXT record (Cloudflare DoH) and returns just the exists entries with their qualifiers, plus the full record and the DNS-lookup count. One-fiel...
SPF exp mechanism(s) for a domain: the explanation record. Reads the SPF TXT record (Cloudflare DoH) and returns just the exp entries with their qualifiers, plus the full record and the DNS-lookup count. One-field answer...
Change watch for spf mechanism all: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with...
Change watch for spf mechanism include: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed w...
Change watch for spf mechanism ip4: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with...
Change watch for spf mechanism ip6: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with...
Change watch for spf mechanism a: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with be...
Change watch for spf mechanism mx: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with b...
Change watch for spf mechanism redirect: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed...
Change watch for spf mechanism exists: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed wi...
Change watch for spf mechanism exp: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with...
Bulk spf authorizes rippling: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment fo...
Bulk spf authorizes deel: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for ag...
Email authentication and deliverability report for a domain in one call: SPF (with -all check), DMARC policy strength, DKIM presence across common selectors, MTA-STS, BIMI and MX, combined into a 0-100 score with an A-F...
Can this domain be spoofed? Checks whether SPF and DMARC together actually block forged mail: missing DMARC, p=none, pct below 100, SPF +all or ?all, or no SPF at all mean attackers can send email as the domain. Returns...
Detect language, formality and tone of a text with confidence scores. Deterministic heuristics + compact wordlists. Returns iso_639-1 + register. — $0.001 USDC/call on eip155:8453. Pay-per-call via x402 — no API key, no...
Email deliverability audit for a domain: MX records, parsed SPF with qualifier grading, DMARC policy grade, DKIM selector probing (12 common selectors), and DNSBL reputation checks (dronebl, SpamCop, Barracuda, Spamhaus)...
SPF flattener: recursively expands a domain's SPF includes and redirects into the final list of authorised IPv4/IPv6 ranges and returns a flattened record. Fix the 10-lookup limit or audit exactly which networks may send...
Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable / free-webmail / role-account flags and a deliverability signal. No SMTP probing of individual mailbo...
DNS and email-authentication audit for one domain: A/AAAA presence, NS count and whether the nameservers share a /24, MX (including a null MX), SPF (missing, multiple, +all, ~all, ?all), DMARC (missing, p=none, no rua, p...
AI-agent readiness audit, $0.001 USDC per call: How ready is a website for AI agents? Live checks of /llms.txt, robots.txt rules for 12 AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, CCBot…), sitemap.xml...
DNS and email-authentication audit for one domain: A/AAAA presence, NS count and whether the nameservers share a /24, MX (including a null MX), SPF (missing, multiple, +all, ~all, ?all), DMARC (missing, p=none, no rua, p...