DNS Lookup Skill

Overview

A DNS API for record lookups, MX checks and DNS queries from code. DNS Lookup works by performing a DNS query to retrieve the DNS records of a domain. It returns the A, MX, and other records of the domain.

Live Test DNS Lookup Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as DNSLookupSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

{
  "name": "DNSLookupSkill",
  "arguments": {
    "domain": "myspace.com"
  }
}

You do not name the tool yourself; the model picks it. Asking about myspace.com in the terms this skill covers is enough for it to reach for DNSLookupSkill on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

https://api.vervekit.com/v1/mcp

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

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{
  "status": "ok",
  "error": null,
  "data": {
    "domain": "myspace.com",
    "records": {
      "A": [
        "34.111.176.156"
      ],
      "AAAA": null,
      "CNAME": null,
      "MX": [
        {
          "exchange": "us-smtp-inbound-1.mimecast.com",
          "priority": 10
        },
        {
          "exchange": "us-smtp-inbound-2.mimecast.com",
          "priority": 10
        }
      ],
      "NS": [
        "ns-cloud-a4.googledomains.com",
        "ns-cloud-a1.googledomains.com",
        "ns-cloud-a2.googledomains.com",
        "ns-cloud-a3.googledomains.com"
      ],
      "PTR": null,
      "SRV": null,
      "SOA": {
        "nsname": "ns-cloud-a1.googledomains.com",
        "hostmaster": "cloud-dns-hostmaster.google.com",
        "serial": 2,
        "refresh": 21600,
        "retry": 3600,
        "expire": 259200,
        "minttl": 300
      },
      "TXT": [
        "cr40m536tje9on1slld9bi81bg",
        "qpdYoeakhlmAxsnmxgAVFmJgUSibqb/y+Eu6GGn8pdmLf+mFGIB3jhRAxIC5KObsPMES9MW2c+oOrpOo/lCQVw==",
        "oZ19a+EOIwWVDPJ7POj14UAGBfzk9xcJMmsTUAMUy7H82sDuVCxvw9rZqdg3znFrdTH04+49zd1djhEAt0ooiA==",
        "MS=ms89904786",
        "google-site-verification=eu-3gW1JePvsGRRCaEvH17YUOTFJNofm4lnz2Pk0LTc",
        "google-site-verification=q0iWqpcfOBclAJaCeWh83v62QQ4uCgbWObQ08p37qgU",
        "al4upe6q5cl13sg4srvfivflvg",
        "v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all",
        "cj65vjpq0s1v9u7vfo020c6rel"
      ],
      "CAA": null
    },
    "summary": {
      "hasIPv6": false,
      "hasMailServers": true,
      "hasSPF": true
    }
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

A call costs 6 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Mail Delivery Verification

To verify email destination readiness, onboarding systems query incoming domain MX records and priority values before routing outbound messages.

Dual-Stack Infrastructure Auditing

DevOps engineers inspect IPv4 and IPv6 addresses across client domains to confirm dual-stack network reachability and detect missing AAAA entries.

Domain Migration Monitoring

When moving web infrastructure to new hosts, deployment pipelines check resolving A and MX records in real time to verify DNS propagation.

Custom Domain Onboarding

Hosting platforms query target domains during customer onboarding to verify that resolved IP addresses point to designated web servers.

Other ways to use DNS Lookup Skill

Set up DNS Lookup Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

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