Domain Intelligence API

Domain intelligence in one call: WHOIS, DNS records, SSL certificate, domain age. Essential for due diligence and security audits. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "domain-intelligence": {
      "url": "https://domain-intelligence.api.klymax402.com/mcp"
    }
  }
}

Related MCP server: mcp-ip2whois

Quickstart -- HTTP (x402)

curl "https://domain-intelligence.api.klymax402.com/api/lookup?domain=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

domain_lookup_intelligence

Use this when you need comprehensive domain intelligence -- WHOIS, DNS, and SSL data in a single call. Returns structured JSON with full domain profile.

Parameters

Example response:

{"whois":{"registrar":"Cloudflare","createdDate":"2010-01-15","expiryDate":"2027-01-15","nameservers":["ns1.cloudflare.com"]},"dns":{"a":["104.26.10.1"],"mx":[{"priority":10,"exchange":"mx.example.com"}]},"ssl":{"issuer":"Let's Encrypt","daysRemaining":45},"domainAge":5932}

When to use: domain purchases, security audits, phishing investigations, or due diligence on vendors. Essential for checking domain legitimacy, SSL health, and DNS configuration.

Not for: company data (use company_enrich_from_domain), IP geolocation (use ip_lookup_geolocation), website content (use web_scrape_to_markdown), email deliverability (use email_audit_deliverability).

domain_lookup_intelligence

Use this when you need comprehensive domain intelligence -- WHOIS, DNS, and SSL data in a single call. Returns structured JSON with full domain profile. POST variant of domain_lookup_intelligence -- same params passed as JSON body instead of query string.

Parameters

Example response:

{"whois":{"registrar":"Cloudflare","createdDate":"2010-01-15","expiryDate":"2027-01-15","nameservers":["ns1.cloudflare.com"]},"dns":{"a":["104.26.10.1"],"mx":[{"priority":10,"exchange":"mx.example.com"}]},"ssl":{"issuer":"Let's Encrypt","daysRemaining":45},"domainAge":5932}

When to use: domain purchases, security audits, phishing investigations, or due diligence on vendors. Essential for checking domain legitimacy, SSL health, and DNS configuration.

Not for: company data (use company_enrich_from_domain), IP geolocation (use ip_lookup_geolocation), website content (use web_scrape_to_markdown), email deliverability (use email_audit_deliverability).

Example agent prompts

• "Comprehensive domain intelligence -- WHOIS, DNS, and SSL data in a single call"

• "Comprehensive domain intelligence -- WHOIS, DNS, and SSL data in a single call"

Payment

• Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key

• Network: Base L2 (eip155:8453)

• Asset: USDC

• Facilitator: Coinbase CDP (primary), PayAI (fallback)

• Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

• Catalog: https://klymax402.com/llms.txt

• Full API reference: https://klymax402.com/llms-full.txt

• Live stats: https://klymax402.com/stats

License

MIT