DomainDNA

dev.workers.cybermax-tools.cybermax/domaindna-apiVersion 1.1.2

Tech stack, email security (SPF, DMARC, MX provider) and domain age API + MCP. 25 free domains/day.

Status

Responds143 msNov 14, 2026, 14:28 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:28 UTC
Latency: 143 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://domaindna-api.cybermaxtools.com/mcp?via=mcp-registryResponds143 msNov 14, 2026, 14:28 UTC

No sign-in

Claude Code

claude mcp add --transport http domaindna-api 'https://domaindna-api.cybermaxtools.com/mcp?via=mcp-registry'

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: domaindna-api
Remote MCP server URL: https://domaindna-api.cybermaxtools.com/mcp?via=mcp-registry

Cursor

{
  "mcpServers": {
    "domaindna-api": {
      "url": "https://domaindna-api.cybermaxtools.com/mcp?via=mcp-registry"
    }
  }
}

VS Code

code --add-mcp '{"name":"domaindna-api","type":"http","url":"https://domaindna-api.cybermaxtools.com/mcp?via=mcp-registry"}'

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Tools

4 tools

Tools of DomainDNA
	Description		Read-only	Idempotent	Open world
`domain_registration`Domain registration only, for 1-10 domains, from the official RDAP registries. Use this when you need to spot newly registered (possibly risky) domains, check who a domain is registered with, or find upcoming expiries. The fastest and cheapest tool here; no DNS, email or website checks (use domain_report for everything). Input: domains (1-10 domains, URLs or email addresses). Returns results[] with, per domain: registration (registrar, created, updated and expiry dates, age in days, status codes), errors, analyzedAt and cached. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	Domain registration only, for 1-10 domains, from the official RDAP registries. Use this when you need to spot newly registered (possibly risky) domains, check who a domain is registered with, or find upcoming expiries. The fastest and cheapest tool here; no DNS, email or website checks (use domain_report for everything). Input: domains (1-10 domains, URLs or email addresses). Returns results[] with, per domain: registration (registrar, created, updated and expiry dates, age in days, status codes), errors, analyzedAt and cached. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	No	Yes	Yes	Yes
`domain_report`Everything about ONE domain in a single call. Use this when you need to profile one company or website end to end (sales research, vendor or security review, due diligence). For several domains or only one aspect, use email_security, tech_stack or domain_registration instead (cheaper and faster). Input: domain (a domain, URL or email address). Returns check and results[0] with reachable, finalUrl, statusCode, title, description and language of the homepage; technologies[] (CMS, e-commerce, frameworks, analytics, CDN…, each with the evidence it was detected from); email (MX provider, SPF and DMARC policy); dns records and verification tokens; securityHeaders; registration (RDAP registrar, created and expiry dates, age); files (robots.txt, sitemap, llms.txt, security.txt); a one-line summary, analyzedAt and cached. exists tells whether the domain resolves; a site that blocks bots is flagged blocked=true. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	Everything about ONE domain in a single call. Use this when you need to profile one company or website end to end (sales research, vendor or security review, due diligence). For several domains or only one aspect, use email_security, tech_stack or domain_registration instead (cheaper and faster). Input: domain (a domain, URL or email address). Returns check and results[0] with reachable, finalUrl, statusCode, title, description and language of the homepage; technologies[] (CMS, e-commerce, frameworks, analytics, CDN…, each with the evidence it was detected from); email (MX provider, SPF and DMARC policy); dns records and verification tokens; securityHeaders; registration (RDAP registrar, created and expiry dates, age); files (robots.txt, sitemap, llms.txt, security.txt); a one-line summary, analyzedAt and cached. exists tells whether the domain resolves; a site that blocks bots is flagged blocked=true. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	No	Yes	Yes	Yes
`email_security`Email and DNS setup only, for 1-5 domains. Use this when you need to check email deliverability or spoofing protection, or to see which email provider (Google Workspace, Microsoft 365…) a company uses. Does not fetch the website (use tech_stack) or registration data (use domain_registration). Input: domains (1-5 domains, URLs or email addresses). Returns results[] with, per domain: exists; email (MX hosts and provider, SPF record and its all qualifier, DMARC policy, pct and rua); dns (A/AAAA/NS records); verifications (services proven by TXT site-verification tokens, e.g. google, apple, atlassian); errors, analyzedAt and cached. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	Email and DNS setup only, for 1-5 domains. Use this when you need to check email deliverability or spoofing protection, or to see which email provider (Google Workspace, Microsoft 365…) a company uses. Does not fetch the website (use tech_stack) or registration data (use domain_registration). Input: domains (1-5 domains, URLs or email addresses). Returns results[] with, per domain: exists; email (MX hosts and provider, SPF record and its all qualifier, DMARC policy, pct and rua); dns (A/AAAA/NS records); verifications (services proven by TXT site-verification tokens, e.g. google, apple, atlassian); errors, analyzedAt and cached. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	No	Yes	Yes	Yes
`tech_stack`Website technologies only, for 1-3 sites. Use this when you need to know what a website is built with, for lead qualification by technology or competitor research. Fetches each homepage once; no DNS, email or registration data (use email_security or domain_registration). Input: domains (1-3 domains or URLs). Returns results[] with, per site: reachable, blocked, finalUrl, statusCode, title, description, language; technologies[] (CMS, e-commerce platform, frameworks, analytics, tag managers, CDN, chat and more, each with category and the evidence it was detected from); securityHeaders the homepage sends; errors, analyzedAt and cached. Sites that block bots return blocked=true. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	Website technologies only, for 1-3 sites. Use this when you need to know what a website is built with, for lead qualification by technology or competitor research. Fetches each homepage once; no DNS, email or registration data (use email_security or domain_registration). Input: domains (1-3 domains or URLs). Returns results[] with, per site: reachable, blocked, finalUrl, statusCode, title, description, language; technologies[] (CMS, e-commerce platform, frameworks, analytics, tag managers, CDN, chat and more, each with category and the evidence it was detected from); securityHeaders the homepage sends; errors, analyzedAt and cached. Sites that block bots return blocked=true. Limits: each domain counts as one lookup; answers cached for 1 hour per domain; 25 free domains a day per IP without a key, more with a paid key in the x-api-key header. Read-only: nothing is stored, no email is sent.	No	Yes	Yes	Yes

Details

Registry status: Active
Published: Oct 10, 2026
Updated: Oct 10, 2026
Website: https://cybermaxtools.com/store/domaindna-api/?s=mcp-registry-domaindna-api⁠ (opens in a new tab)
Repository: https://gitlab.com/CyberMax.tools/agent-tools⁠ (opens in a new tab)
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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