Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
ClaudSkills / General / education-learning

Code Learnings

Category: General  ·  Sub-category: education-learning  ·  Last updated:
Durable index of lessons learned in past BioMysteryBench harness sessions, numbered L-01, L-02, …, L-NN. Every session must read it at startup (mandated by CLAUDE.md) and append to it at session-end when a non-obvious bug, workflow constraint, or successful unusual approach was discovered. Use this skill whenever the user asks to "add a learning", "record a lesson", "save what we just learned", to write up a post-mortem finding, or to reference a specific learning by ID ("L-12", "L-21"). Trigger even when the user just says "this is worth remembering" or "we should write this down for future agents". Do not invent learnings — every entry must cite a specific PR, commit, or incident.
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From the source SKILL.md

This file records lessons learned from past agent sessions. Read it after claude-progress.txt and documents/features.md, before implementing anything.

What this skill does

Code Learnings is a community-contributed Claude Code skill in the education-learning sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/code-learnings/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Code Learnings Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ 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/code-learnings
curl -L https://claudskills.com/skills/code-learnings/SKILL.md \
  -o ~/.claude/skills/code-learnings/SKILL.md

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

Skills live at ~/.claude/skills/code-learnings/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\code-learnings\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 Code Learnings Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/code-learnings/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Code Learnings skill do?
Durable index of lessons learned in past BioMysteryBench harness sessions, numbered L-01, L-02, …, L-NN. Every session must read it at startup (mandated by CLAUDE.md) and append to it at session-end when a non-obvious bug, workflow constraint, or successful unusual approach was discovered. Use this skill whenever the user asks to "add a learning", "record a lesson", "save what we just learned", to write up a post-mortem finding, or to reference a specific learning by ID ("L-12", "L-21"). Trigger even when the user just says "this is worth remembering" or "we should write this down for future agents". Do not invent learnings — every entry must cite a specific PR, commit, or incident.
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 Code Learnings skill?
Use Code Learnings when your Claude Code task falls under the General category — specifically in the education learning 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 Code Learnings" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the Code Learnings 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. Code Learnings is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General 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
iandonaldson. (2026). Code Learnings [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/code-learnings/
BibTeX
@misc{code-learnings-2026,
  author    = {iandonaldson},
  title     = {Code Learnings [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/code-learnings/}
}

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<script>
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<iframe>
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Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

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Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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