bots.st/runstack-checks
RunStack Checks
External checks for TLS, DNS, ports, email
3404 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 8
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://runstack.pro/api/mcp
What it can do
| Tool | What it says it does |
|---|---|
check_dns | Resolve a name at several public resolvers (Google, Cloudflare, Quad9, …) and compare their answers. Use after changing DNS records to check propagation, or when some users reach a different IP or get NXDOMAIN. Use check_email_domain instead for SPF/DKIM/DMARC analysis. Returns per-resolver… |
check_dnsbl | Check whether an IP address or a domain is on email blocklists (DNSBL/RBL): Spamhaus ZEN and DBL, SpamCop, Barracuda, UCEPROTECT, Mailspike, SURBL, URIBL and others. For a domain, its own name is checked on domain lists and its A/AAAA addresses on IP lists. Use when mail bounces with… |
check_domain_expiry | Look up a domain's registration in the registry (RDAP, or WHOIS for .ru/.su/.рф): expiry date and days left, registrar, creation date, EPP status codes (clientHold, redemptionPeriod, transfer locks…) with explanations, nameservers and DNSSEC. Use to check when a domain must be renewed or why it… |
check_email_domain | Audit a mail domain as other mail servers see it: MX, SPF (including the 10-DNS-lookup limit), DKIM, DMARC policy, PTR / forward-confirmed reverse DNS, SMTP STARTTLS on the MX hosts, MTA-STS, TLS-RPT, BIMI. Use when mail lands in spam or bounces, after changing mail provider or DNS, or before… |
check_http | Request a public URL from outside your network and inspect the HTTP layer: status code, full redirect chain, security headers (HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy…), caching and compression headers. Use to debug redirect loops, unexpected status codes or missing… |
check_ip | 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 headers, or to check PTR / RPKI for a mail or BGP issue. Does not test reachability (use check_port). |
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 to find out why a service works locally but is unreachable from outside. Only public addresses are accepted; this does not test the application behind the port… |
check_tls | Scan a public host's TLS from the internet: certificate validity, chain completeness, expiry date, hostname match, enabled protocols (TLS 1.0–1.3), cipher suites, HSTS. Use when browsers show certificate errors, before/after renewing or rotating a certificate, or to confirm old TLS versions are… |
In its maker's words
External checks of TLS, HTTP, email domain, DNS, ports, blocklists and domain expiry
- Website
- runstack.pro/developers
- Source
- github.com/WithoutCowards/runstack-mcp
- Publisher
- runstack.pro
- Listed from
- the official MCP Registry as
pro.runstack/checks - Version
- 1.0.2, updated 1 Nov 2026
- Kinds of work
- Security and trust, Domains and websites, Browser and automation
The domain it lives on
- runstack.pro
- registered 11 Feb 2026 (9 months ago), at Registrar of Domain Names REG.RU LLC
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 3404 ms | |
| Answered | 3246 ms | |
| Answered | 1760 ms |
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