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DNS Lookup API

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DNS record lookup — A, AAAA, MX, TXT, CNAME, NS via Cloudflare. x402 micropayment.

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 dns-lookup-api 'https://dns-lookup.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "dns-lookup-api": {
            "type": "sse",
            "url": "https://dns-lookup.api.klymax402.com/mcp"
        }
    }
}

Documentation

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

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

DNS Lookup API

Lookup DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA, SRV) via Cloudflare DNS-over-HTTPS. Fast and reliable. 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": {
    "dns-lookup": {
      "url": "https://dns-lookup.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl -X POST "https://dns-lookup.api.klymax402.com/api/lookup" \
  -H "Content-Type: application/json" \
  -d '{"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
network_lookup_dnsPOST/api/lookup$0.005Lookup DNS records for a domain
network_lookup_dns

Use this when you need to look up DNS records for a domain. Returns all matching records in JSON via Cloudflare DNS-over-HTTPS.

Parameters

NameTypeRequiredDescription
domainstringyesDomain name to lookup (e.g. example.com)
typestringnoDNS record type: A, AAAA, MX, TXT, CNAME, NS, SOA, SRV (default: A)

Example response:

{"domain":"example.com","type":"A","records":[{"name":"example.com","type":"A","data":"93.184.216.34","ttl":3600}],"queryTime":12,"resolver":"cloudflare"}

When to use: verifying DNS configuration, checking MX records before email setup, auditing TXT records for SPF/DKIM/DMARC, and debugging domain resolution issues.

Not for: SSL certificate check (use security_check_ssl), WHOIS domain info (use domain_lookup_intelligence), HTTP header analysis (use network_analyze_headers).

Example agent prompts

  • "Look up DNS records for a domain"

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 DNS Lookup API?

DNS record lookup — A, AAAA, MX, TXT, CNAME, NS via Cloudflare. x402 micropayment.

How do I install DNS Lookup API?

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

Does DNS Lookup 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 DNS Lookup API open source?

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

Who maintains DNS Lookup 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.