memstack-deployment-domain-ssl

memstack-deployment-domain-ssl is a skill for Claude Code from cwinvestments/memstack. It costs 66 tokens per session (3,115 once invoked), scanned A, original, MIT.

A domain and SSL setup check verifies that a website address points to the right hosting service and uses a valid SSL certificate for HTTPS, the encrypted form of web traffic. It also checks redirects, HSTS security settings, and overall domain health.

In plain words
What is it for?
Use it to set up or check a custom domain, DNS records, SSL certificates, HTTPS redirects, HSTS, and domain expiration or renewal status.
Why use it?
It helps find broken DNS records, certificate problems, inconsistent website addresses, and security configuration issues that can stop a site from loading correctly or securely.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the memstack plugin — 87 skills, 2 commands, 6 hooks shipped together

Good fit Use it to set up or check a custom domain, DNS records, SSL certificates, HTTPS redirects, HSTS, and domain expiration or renewal status.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cwinvestments/memstack/domain-ssl
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add cwinvestments/memstack --skill domain-ssl
Clone the repo
git clone --depth 1 https://github.com/cwinvestments/memstack

Made for: Claude Code.

Or install memstack, the plugin that ships this one along with the rest of its 87 skills, 2 commands, 6 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for memstack-deployment-domain-ssl

README.md
[![agentmods](https://agentmods.dev/badge/skills/cwinvestments/memstack/domain-ssl/github.svg)](https://agentmods.dev/skills/cwinvestments/memstack/domain-ssl)
Your own site
<a href="https://agentmods.dev/skills/cwinvestments/memstack/domain-ssl"><img src="https://agentmods.dev/badge/skills/cwinvestments/memstack/domain-ssl/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for memstack-deployment-domain-ssl

Your own site · 80×15
<a href="https://agentmods.dev/skills/cwinvestments/memstack/domain-ssl"><img src="https://agentmods.dev/badge/skills/cwinvestments/memstack/domain-ssl.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,115 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00066 $0.03115
Opus 5.5 $0.00026 $0.01246
Sonnet 5.5 $0.00013 $0.00623
Haiku 4.5 $0.00007 $0.00312

Measured 1mo ago against content hash 60bd135430f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

memstack-deployment-domain-ssl scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -sI http://example.com | grep -i "location"
skills/deployment/domain-ssl/SKILL.md · 301 lines

How it starts

The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🔒 Domain & SSL: Verifying domain, DNS, and certificate configuration...

Validates DNS records, SSL certificates, redirects, HSTS, and domain health across all managed properties.

Activation

When this skill activates, output:

🔒 Domain & SSL: Running domain health checks...

Then execute the protocol below.

Context Status
User says "check domain" or "setup domain" ACTIVE
User says "SSL certificate" or "fix SSL" or "check DNS" ACTIVE
Setting up a new domain for a deployed project ACTIVE
Checking domain expiration or renewal status ACTIVE
User is writing code, not managing infrastructure DORMANT
Discussing domain names abstractly (brainstorming names) DORMANT

Anti-patterns

Trap Reality Check
"SSL auto-renews, I don't need to check it" Auto-renewal fails silently when DNS changes. Verify quarterly.
"DNS propagation takes 48 hours" Most propagation happens in minutes. If it's been 2+ hours, something is misconfigured.
"www and non-www both work, that's fine" Pick one canonical URL and redirect the other. Duplicate content hurts SEO and splits analytics.
"HTTPS is enough for security" Without HSTS, the first request can still be intercepted. HSTS tells browsers to never try HTTP.
"I'll check the domain when it stops working" By then, your site is down. Monitor expiration, SSL, and DNS proactively.

Protocol

Step 1: Verify DNS Records

Check that DNS records are correctly configured for the target domain:

# A records (points domain to IP)
dig +short A example.com

# CNAME records (points subdomain to another domain)
dig +short CNAME www.example.com

# TXT records (verification, SPF, DKIM)
dig +short TXT example.com

# MX records (email routing, check for conflicts)
dig +short MX example.com

# NS records (authoritative nameservers)
dig +short NS example.com

Expected patterns by hosting provider:

Provider Record Type Value
Railway CNAME *.up.railway.app
Netlify CNAME *.netlify.app or A record to 75.2.60.5
Vercel CNAME cname.vercel-dns.com or A record to 76.76.21.21
Cloudflare (proxied) A Cloudflare IPs (check dashboard)

Read the full file on GitHub · 301 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed 60bd135430f6
  2. 1mo ago First seen · 301 lines · 66 tokens per session scan A 28722fbe5fbd

Subscribe to this mod's changes

memstack-deployment-domain-ssl is a skill published in the GitHub repository cwinvestments/memstack (425 stars, last pushed 4d ago), licensed MIT. It adds 66 tokens to every session and 3,115 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.