Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
ClaudSkills / Security / security-misc

Lessons Update

Category: Security  ·  Sub-category: security-misc  ·  Last updated:
Wspólna nauka — po każdym fix-phase / multi-file change / non-trivial task przejrzyj sesję i zdecyduj czy warto zapisać lekcję (nową lub update istniejącej). Triggeruj proaktywnie po PR-ach, fazach audytu, zamknięciu commit'u, każdej okazji gdy coś poszło nie tak / fix wprowadził nowy bug / wykryłem powtarzający się pattern. Skip dla trivial reads, pure refactors bez błędów, doc updates. ALWAYS-CONFIRM przed zapisem.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Cel: po każdym non-trivial task wyciągnąć to czego się nauczyliśmy i zachować jako persistent memory, żeby kolejne sesje nie powtarzały tych samych błędów. Memory ładuje się przez SessionStart hook (project-scoped), więc każda zapisana lekcja zwiększa baseline competence wszystkich przyszłych sesji.

What this skill does

Lessons Update is a community-contributed Claude Code skill in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/lessons-update/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Lessons Update Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 174,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/lessons-update
curl -L https://claudskills.com/skills/lessons-update/SKILL.md \
  -o ~/.claude/skills/lessons-update/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/lessons-update/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/lessons-update/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\lessons-update\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Lessons Update Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/lessons-update/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Lessons Update skill do?
Wspólna nauka — po każdym fix-phase / multi-file change / non-trivial task przejrzyj sesję i zdecyduj czy warto zapisać lekcję (nową lub update istniejącej). Triggeruj proaktywnie po PR-ach, fazach audytu, zamknięciu commit'u, każdej okazji gdy coś poszło nie tak / fix wprowadził nowy bug / wykryłem powtarzający się pattern. Skip dla trivial reads, pure refactors bez błędów, doc updates. ALWAYS-CONFIRM przed zapisem.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Lessons Update skill?
Use Lessons Update when your Claude Code task falls under the Security category — specifically in the security misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Lessons Update" or describe the task and let Claude pick). Browse related skills at /category/security/.
What is a Claude Code skill and how does the Lessons Update skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Lessons Update is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
marcin-elj. (2026). Lessons Update [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/lessons-update/
BibTeX
@misc{lessons-update-2026,
  author    = {marcin-elj},
  title     = {Lessons Update [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/lessons-update/}
}

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<script>
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Security scan

Grade A · scanned 2026-08-02 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/lessons-update/#security)

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More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills
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