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Domain Intelligence API

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WHOIS, DNS records, SSL certificate data for any domain in one call. x402.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse domain-intelligence-api 'https://domain-intelligence.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "domain-intelligence-api": {
            "type": "sse",
            "url": "https://domain-intelligence.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Domain Intelligence API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

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"
    }
  }
}

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

ToolMethodPathPriceDescription
domain_lookup_intelligenceGET/api/lookup$0.012Get comprehensive domain intelligence (WHOIS + DNS + SSL)
domain_lookup_intelligencePOST/api/lookup$0.012Get comprehensive domain intelligence (WHOIS + DNS + SSL) (POST variant)
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

NameTypeRequiredDescription
domainstringyesDomain to lookup (e.g. example.com)

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

NameTypeRequiredDescription
domainstringyesDomain to lookup (e.g. example.com)

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.

License

MIT

Frequently asked questions

What is Domain Intelligence API?

WHOIS, DNS records, SSL certificate data for any domain in one call. x402.

How do I install Domain Intelligence API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse domain-intelligence-api 'https://domain-intelligence.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Domain Intelligence API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Domain Intelligence API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Domain Intelligence API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.