Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"nslookup": {
"args": [
"-y",
"@nslookup-io/mcp-server"
],
"command": "npx"
}
}
}Are you the author?
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DNS lookups, SSL certificate checks, security scanning, GEO (AI readiness) scoring, and domain intelligence — via the Model Context Protocol.
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y '@nslookup-io/mcp-server' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Five weighted categories — click any category to see the underlying evidence.
No known CVEs.
Checked @nslookup-io/mcp-server against OSV.dev.
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MCP Server for nslookup.io
DNS lookups, SSL certificate checks, security scanning, GEO (AI readiness) scoring, and domain intelligence — via the Model Context Protocol.
Website · API Docs · npm · Contact
| Tool | Description |
|---|---|
dns_lookup | Look up all common DNS records (A, AAAA, NS, MX, TXT, CNAME, SOA) for a domain |
dns_record | Look up a specific DNS record type — supports all 53 types (HTTPS, DNSKEY, TLSA, SPF, etc.) |
dns_propagation | Check DNS propagation across 18+ global servers (Cloudflare, Google, Quad9, regional, authoritative) |
webservers | Get IPv4 and IPv6 addresses for a domain |
| Tool | Description |
|---|---|
dns_health | NEW — Run a DNS health audit (39 checks across DNSSEC, MX, hygiene, TTL, nameservers, CAA, operational maturity) with severity-weighted scoring |
ssl_certificate | Check SSL/TLS certificate — issuer, expiry, chain validity, cipher strength, SAN domains, TLS version |
bimi_vmc | Check BIMI record and VMC (Verified Mark Certificate) — logo URL, trademark info, certificate expiry |
security_scan | Scan a domain for security issues — SPF/DKIM/DMARC, cookie security, DNS misconfigurations |
uptime_check | One-time HTTP uptime check — status, response time, HTTP status code |
uptime_check_multi | Check if a site is up from 7 global locations — Amsterdam, Sydney, London, Frankfurt, Delhi, Warsaw, South Carolina |
| Tool | Description |
|---|---|
geo_checker | Check a domain's GEO (Generative Engine Optimization) score — AI crawler access, structured data, entity signals, content extractability, and prioritized recommendations |
The easiest way to get started. No installation required.
nslookuphttps://mcp.nslookup.io/mcpDone — Claude can now use all 11 DNS, security, and health tools. Try asking "Run a DNS health check on github.com".
nslookuphttps://mcp.nslookup.io/mcpDone — ChatGPT can now perform DNS lookups, certificate checks, and security scans.
Any MCP-compatible client that supports Streamable HTTP transport can connect using:
https://mcp.nslookup.io/mcp
No API key or authentication required.
If you prefer running the server locally (requires Node.js 18+), add to your claude_desktop_config.json:
{
"mcpServers": {
"nslookup": {
"command": "npx",
"args": ["-y", "@nslookup-io/mcp-server"]
}
}
}
Available globally (all projects):
claude mcp add nslookup --scope user -- npx -y @nslookup-io/mcp-server
Or for a specific project only:
claude mcp add nslookup --scope project -- npx -y @nslookup-io/mcp-server
Add to your Cursor MCP settings (.cursor/mcp.json):
{
"mcpSer
... [View full README on GitHub](https://github.com/NsLookup-io/nslookup-mcp#readme)