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RunStack MCP server

Which MCP servers are RunStack's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-28

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Whose server it is
  • Registry namepro.runstack/checksverified in the MCP registry

The registry name sits under runstack.pro. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-28
  • Stateanswerschecked 2026-10-28
  • Tools8
  • Server calls itselfrunstack
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-28 the server answered initialize and tools/list without a sign-in. First answer in 567 ms.

Should an agent connect itConnect it, with care
  • Its tools do check whether a remote TCP port is reachable, but not calculate and split IPv4 and IPv6 subnets; install a server monitoring stack with a prebuilt Grafana dashboard.

Once connected

  • For "check whether a remote TCP port is reachable", the likely first call is check_port.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 7, the first on 2026-10-28
  • INITE MCP score73 of 100answers 100 · does the job 33 · definitions 100 · context 100 · use 0 · connects 100
  • What an agent can do with it1 of 3 use cases
  • Answered100% of days7 of 7 daily checks
  • Median first answer785 ms
  • Space in an agent's context≈ 1,524 tokensthe definitions of all its tools (8), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results8 of 8 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • can do · check whether a remote TCP port is reachable
  • cannot · calculate and split IPv4 and IPv6 subnets
  • cannot · install a server monitoring stack with a prebuilt Grafana dashboard

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers8 tools · read 2026-10-28
  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "checks": {
      "type": "http",
      "url": "https://runstack.pro/api/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http runstack https://runstack.pro/api/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://runstack.pro/api/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.