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.
npx skills add sergekostenchuk/ui-ux-agent-skill-system --skill ssl-and-security-hardenergit clone --depth 1 https://github.com/sergekostenchuk/ui-ux-agent-skill-systemWrote 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.
[](https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/ssl-and-security-hardener)<a href="https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/ssl-and-security-hardener"><img src="https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/ssl-and-security-hardener/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.
<a href="https://agentmods.dev/skills/sergekostenchuk/ui-ux-agent-skill-system/ssl-and-security-hardener"><img src="https://agentmods.dev/badge/skills/sergekostenchuk/ui-ux-agent-skill-system/ssl-and-security-hardener.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00057 | $0.00295 |
| Opus 5 | $0.00028 | $0.00148 |
| Sonnet 5 | $0.00011 | $0.00059 |
| Haiku 4.5 | $0.00006 | $0.00030 |
Grade A, and why
ssl-and-security-hardener scanned grade A with 0 findings 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 12d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
SSL And Security Hardener
Plan launch security hardening and verification without mutating production.
Workflow
- Identify target stack, hosting, domain, and approval status.
- Plan SSL/TLS, redirects, HSTS, headers, CSP, cookies, backups, monitoring, and vulnerability basics.
- Define verification commands and rollback.
- Coordinate final gate with
launch-readiness-auditor.
Safety Rules
- Do not issue certificates, change server config, force HTTPS, edit CSP, or rotate secrets in production without approval.
- Do not store private keys, cert private material, tokens, or
.env.
Validation
python3 $CODEX_HOME/skills/.system/skill-creator/scripts/quick_validate.py $CODEX_HOME/skills/ssl-and-security-hardener
python3 $CODEX_HOME/skills/senior-skill-architect/scripts/lint_production_skill.py $CODEX_HOME/skills/ssl-and-security-hardener
python3 -m json.tool $CODEX_HOME/skills/ssl-and-security-hardener/evals/evals.json >/dev/null
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 12d ago First seen · 29 lines · 57 tokens per session scan A d12c6acb8998
ssl-and-security-hardener is a skill published in the GitHub repository sergekostenchuk/ui-ux-agent-skill-system (23 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 57 tokens to every session and 295 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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