mcp-server-dns

Instructions

Implementation Reference

• src/dns.ts:133-138 (handler)

  The actual implementation of checkNameservers function that queries DNS for NS records and returns them as a newline-separated string

  export async function checkNameservers(domain: string): Promise<string> {
    const nameservers = await dns.resolveNs(domain);
    return nameservers.length > 0
      ? nameservers.join("\n")
      : "No nameserver records found.";
  }

• src/index.ts:60-70 (registration)

  Tool registration for 'check_nameservers' with schema definition (domain string) and handler that calls the checkNameservers function

  server.tool(
    "check_nameservers",
    "Get the nameserver (NS) records for a domain.",
    {
      domain: z.string().describe("Domain name (e.g. example.com)"),
    },
    async ({ domain }) => {
      const result = await checkNameservers(domain);
      return { content: [{ type: "text" as const, text: result }] };
    },
  );