RunStack Checks

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as pro.runstack/checks and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

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Tools this endpoint exposes

Read directly from the endpoint on 17 Oct 2026. Not supplied by the maker.

• check_tls

  Scan a public host's TLS from the internet: certificate validity and chain, expiry, hostname match, protocols (TLS 1.0–1.3), ciphers, HSTS. Use when a site shows certificate errors, before/after renew

• check_http

  Fetch a public URL from outside your network: status, redirect chain, TLS, security headers (HSTS, CSP, X-Frame-Options…), caching and compression. Use to debug redirect loops, wrong status codes or m

• check_email_domain

  Audit a mail domain as other mail servers see it: MX, SPF (with 10-lookup count), DKIM, DMARC, PTR/FCrDNS, SMTP STARTTLS, MTA-STS, TLS-RPT, BIMI. Use when mail lands in spam or bounces, after changing

• check_dns

  Resolve a name at several public resolvers (Google, Cloudflare, Quad9, …) and compare answers. Use after changing DNS records to check propagation, or when some users reach a different IP or get NXDOM

• check_port

  Check from the internet whether TCP ports of a public host are open, closed or filtered. Use to verify firewall / security group rules, or why a service is reachable locally but not from outside. Only

• ip_lookup

  Look up an IP address or ASN: owner organization, announced prefix, PTR (reverse DNS), RPKI validity and geolocation. Use to identify who is behind an address seen in logs, or to check PTR/RPKI for a

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