uptime_check
One-time HTTP uptime check — status, response time, HTTP status code
How to use it
uptime_check is exposed by the Nslookup MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the uptime_check tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Nslookup MCP
claude mcp add --transport http nslookup https://mcp.nslookup.io/mcpOther tools in Nslookup MCP (22)
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SSL certificate expiry overview — alert-level counts and certificates sorted by soonest expiry
Recent DNS changes on your monitored domains with their risk reviews (0–100 score, severity counts)
Open (or all recent) incidents across all monitoring types, with a per-status/per-source summary
List all your monitors across every type (uptime, API, DNS, WHOIS, propagation, certificates, VMC)
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Scan a domain for security issues — SPF/DKIM/DMARC, cookie security, DNS misconfigurations
Check SSL/TLS certificate — issuer, expiry, chain validity, cipher strength, SAN domains, TLS version
Read a public status page (by slug or custom domain): overall status, components, active incidents
Check if a site is up from 7 global locations — Amsterdam, Sydney, London, Frankfurt, Delhi, Warsaw, South Carolina
Get IPv4 and IPv6 addresses for a domain