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.
Change watch for spf authorizes marketo: 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 authorizes zoho: 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 wit...
Change watch for spf authorizes zendesk: 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 authorizes freshdesk: 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 change...
Change watch for spf authorizes intercom: 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 authorizes klaviyo: 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 authorizes brevo: 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 authorizes mailjet: 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...
End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.
Email security of a domain: MX, SPF (final policy, multiple-record and lookup-limit problems), DMARC (policy, subdomains, reporting), MTA-STS, TLS-RPT and BIMI, with a score and recommendations. Detects spoofable domains...
Audit a domain's email authentication: MX, SPF, DMARC, DKIM (20 selectors), MTA-STS, TLS-RPT, BIMI and domain age. Returns an A-F grade with concrete fixes.
Health and payment-path check. Returns server time and confirms the x402 payment settled. The cheapest endpoint in the catalog at $0.001, intended for testing a client's payment flow.
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...
Analyze raw email headers: sender, recipient, subject, server hops (Received) with delays, SPF/DKIM/DMARC results, Return-Path and Reply-To mismatches and spoofing signals, with a verdict. Investigate phishing or deliver...
Check a UUID: send a string and get whether it is a valid UUID plus its version and variant. $0.001 USDC per call on Base.
Check any public URL: status code, latency, final URL after redirects, and response headers. The uptime primitive for agent monitors.
Check the TLS certificate a domain serves on port 443: whether it chains to a trusted root, matches the name (RFC 9525) and when it expires, with issuer, chain, key and signature algorithm, TLS version and coded findings...
Does the domain's SPF record authorise google workspace to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for google-workspace's include/ip mechanisms, returning yes/no, the matching mechanism and th...
Does the domain's SPF record authorise microsoft 365 to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for microsoft-365's include/ip mechanisms, returning yes/no, the matching mechanism and the full...
Does the domain's SPF record authorise amazon ses to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for amazon-ses's include/ip mechanisms, returning yes/no, the matching mechanism and the full recor...
Does the domain's SPF record authorise sendgrid to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for sendgrid's include/ip mechanisms, returning yes/no, the matching mechanism and the full record. C...
Does the domain's SPF record authorise mailgun to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for mailgun's include/ip mechanisms, returning yes/no, the matching mechanism and the full record. Con...
Does the domain's SPF record authorise mailchimp to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for mailchimp's include/ip mechanisms, returning yes/no, the matching mechanism and the full record....
Does the domain's SPF record authorise mandrill to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for mandrill's include/ip mechanisms, returning yes/no, the matching mechanism and the full record. C...