RunStack Checks

pro.runstack/checks · v1.0.1 · cloud-and-infra

RunStack Checks is healthy: it completed an MCP handshake in 2000 ms and exposes 6 tools.

External checks of TLS, HTTP headers, email domain, DNS and ports, with cause and fix

Endpoint: https://runstack.pro/api/mcp (streamable-http)

Repository · Website · JSON · Add to my inventory

Facts

Users (last 30 days)0
HandshakeHealthy
Auth neededNone
Tool count6
Latency2000 ms
Last checked (UTC)2026-10-17T15:15:39.494Z

Health history

Checked (UTC)StatusLatencyError
2026-10-17T15:15:39.494ZHealthy2000

Tools (6)

check_tlsScan 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 renewing or rotating a certificate, or to confirm old TLS versions are off. Returns a verdict, findings w
check_httpFetch 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 missing headers as real visitors and CDNs see them, or to verify a web server config change after dep
check_email_domainAudit 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 mail provider or DNS, or before tightening DMARC. Returns a verdict, findings with cause and fix, a
check_dnsResolve 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 NXDOMAIN. Returns per-resolver answers and inconsistencies.
check_portCheck 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 public addresses are allowed.
ip_lookupLook 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 mail or BGP issue.