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IntoDNS.ai DNS & Email Security Scanner
ai.intodns/scanner in the official MCP registry.
Endpoint https://intodns.ai/api/mcp. Source: github.com/RoscoNL/intodns-mcp-server.
The registry describes it as: DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.
We read its 45 tools on 2026-10-22. Nothing in them matched our tool-poisoning rules.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
scan_domain nis2_quickscan get_everything_report create_report_snapshot get_report_snapshot start_deep_scan get_deep_scan_status cancel_deep_scan lookup_dns validate_dnssec check_dns_propagation check_tlsa_dane check_spf flatten_spf discover_dkim check_dmarc check_bimi check_mta_sts check_smtp_tls check_fcrdns check_blacklist check_sender_requirements check_email_security create_email_test get_email_test poll_email_test analyze_raw_email parse_dmarc_report whois_lookup check_http3 explain_issue generate_dns_fix get_health get_stats get_hall_of_fame get_pdf_report_link get_badge_link read_llm_discovery get_citation_guidance analyze_security_headers generate_security_headers generate_spf generate_dmarc generate_tlsa scan_csp
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[](https://lazaretto.dev/mcp-registry/ai-intodns-scanner)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.