DMARC Shark — Email DNS Checker
Check a domain's public SPF, DMARC, MX and DKIM DNS records on demand. No account required.
| Endpoint | https://dmarcshark.com/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 2 tools · grade A (99) · pin ts_ea966098b3b08e1c0cde20a942f9c8a8 · protocol 2025-06-18 |
| First / last listed | 2026-10-30 02:28 UTC / 2026-10-30 02:28 UTC |
| Grade over time | 2026-10-30: A (99), 2 tools |
Is this your server? Own a server? ToolFit hosted watch re-checks it every 24 h ($0.25 per 30 days) or 6 h ($0.60) and sends you an HMAC-signed webhook when its tools or grade change: POST https://api.youraitools.co/toolfit/v1/watch. To opt out, see About & opt-out.
Tools: check_domain get_saved_result
check_domain | Runs fresh, bounded public SPF, DMARC, MX and optionally specified DKIM-selector DNS checks. Changes the public saved snapshot. Rate limited. DNS findings do not prove message authentication. params: domain*, selectors |
get_saved_result | Reads the last saved, timestamped public snapshot without making any DNS queries. Results expire after 90 days. params: domain* |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.