Learning to Learn (OpenMAIC)
THU-MAIC/OpenMAIC
A Chinese-language skill that embeds learning strategies like retrieval practice and self-explanation as a parallel goal inside an OpenMAIC subject lesson, without making study skills the topic.
Extract evidence-backed engineering lessons from recent changes or incidents.
MITAuto-check passed
Install Lesson Learned
$ npx skills add compozy/compozy --skill lesson-learned -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install compozy/compozy lesson-learned --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/compozy/compozy.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/lesson-learned .claude/skills/lesson-learned && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "lesson-learned" agent skill from https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learned into .claude/skills/lesson-learned/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lesson-learned", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learnedType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add compozy/compozy --skill lesson-learned -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install compozy/compozy lesson-learned --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/compozy/compozy.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/lesson-learned .agents/skills/lesson-learned && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "lesson-learned" agent skill from https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learned into .agents/skills/lesson-learned/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lesson-learned", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add compozy/compozy --skill lesson-learned -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install compozy/compozy lesson-learned --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/compozy/compozy.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/lesson-learned .cursor/skills/lesson-learned && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "lesson-learned" agent skill from https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learned into .cursor/skills/lesson-learned/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lesson-learned", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/compozy/compozy.git --path .agents/skills/lesson-learned--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add compozy/compozy --skill lesson-learned -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install compozy/compozy lesson-learned --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/compozy/compozy.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/lesson-learned .gemini/skills/lesson-learned && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "lesson-learned" agent skill from https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learned into .gemini/skills/lesson-learned/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lesson-learned", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install compozy/compozy lesson-learnedInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add compozy/compozy --skill lesson-learned -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/compozy/compozy.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/lesson-learned .github/skills/lesson-learned && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "lesson-learned" agent skill from https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learned into .github/skills/lesson-learned/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lesson-learned", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add compozy/compozy --skill lesson-learned -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install compozy/compozy lesson-learned --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/compozy/compozy.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/lesson-learned .opencode/skills/lesson-learned && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "lesson-learned" agent skill from https://github.com/compozy/compozy/tree/main/.agents/skills/lesson-learned into .opencode/skills/lesson-learned/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lesson-learned", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
lesson-learned- GitHub stars
- 2.8k
- Token cost
- ~466 tokens
- SKILL.md length
- 234 words
- Files
- 4 (incl. references)
- Skills in repo
- 47
- Repo updated
- First seen
- Licence
- MIT
At a glance
Extract evidence-backed engineering lessons from recent changes or incidents.
- Works in 5 steps: Resolve the requested commit, diff,… → Separate incident facts, current policy,… → State what happened, the confirmed… → …
- Requested reflection
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Retiring an obsolete workflow rule
What it does
Lesson Learned is an agent skill from compozy/compozy. Extract evidence-backed engineering lessons from recent changes or incidents. Use for requested reflection, lesson updates, or retiring an obsolete workflow rule.
Its SKILL.md is about 470 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `README.md`, `references/anti-patterns.md` and `references/se-principles.md`).
The repository describes itself as: An operating system for AI agents. Plug in the agent CLIs you already use (Claude Code, Codex, Gemini CLI, Cursor) and they become a team: they split the work, hand tasks to each… The licence is MIT.
When your agent uses it
- Requested reflection
- Retiring an obsolete workflow rule
Example prompts
- “/lesson-learned”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Resolve the requested commit, diff, incident, or lesson scope from context. Reuse gathered evidence; inspect additional files only to…
- Separate incident facts, current policy, and historical practice. Check whether a newer directive supersedes the original assumption…
- State what happened, the confirmed cause, the consequence, and the smallest reusable decision that prevents recurrence. Cite local…
- Keep an existing lesson's ID and source trail when its policy changes. Mark obsolete guidance as historical, update the current…
- Check referenced files and policy consistency. Editorial lesson changes need no tests that freeze prose and no new runtime QA cycle.
What it can do on your machine
Read from SKILL.md and the folder at commit c15729c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Lesson Learned loads about 466 tokens when it runs, and up to ~2.6k if it reads all its reference files. Until then it costs about 44 tokens; SKILL.md has 234 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from compozy/compozy at commit c15729c, republished under its MIT licence (© compozy). 234 words, ~466 tokens.
Download SKILL.mdSave it as
.claude/skills/lesson-learned/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- lesson-learned
- description
- Extract evidence-backed engineering lessons from recent changes or incidents. Use for requested reflection, lesson updates, or retiring an obsolete workflow rule.
Lesson Learned
Extract or revise an engineering lesson from concrete incident evidence, code changes, and user decisions. Keep the causal explanation and the narrow rule it supports.
- Resolve the requested commit, diff, incident, or lesson scope from context. Reuse gathered evidence; inspect additional files only to answer a specific causal question.
- Separate incident facts, current policy, and historical practice. Check whether a newer directive supersedes the original assumption before promoting it to a rule.
- State what happened, the confirmed cause, the consequence, and the smallest reusable decision that prevents recurrence. Cite local paths/commits. Record uncertainty rather than forcing a lesson from weak evidence.
- Keep an existing lesson's ID and source trail when its policy changes. Mark obsolete guidance as historical, update the current application and index, and link the authoritative replacement.
- Check referenced files and policy consistency. Editorial lesson changes need no tests that freeze prose and no new runtime QA cycle.
Read the matching entry in references/se-principles.md only when a named principle helps explain the evidence; references/anti-patterns.md is optional diagnostic background. A lesson does not automatically require a new skill, test file, approval, review round, or whole-project gate.
Present the finding in a short explanation or the repository's established lesson format. Include current scope and supersession conditions for procedural guidance. Avoid generic advice, mandatory templates for trivial changes, and claims that an old incident proves a model-wide limitation.
© compozy, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 3 other files (references) in .agents/skills/lesson-learned of compozy/compozy.
- SKILL.md
- README.md
- references/anti-patterns.md
- references/se-principles.md
Open the folder on GitHubat commit c15729c
Compare with similar skills
Lesson Learned next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Lesson Learned this skillcompozy/compozy | 2.8k | — | ~466 | Automated safety check: Pass | MIT | |
| Learning to Learn (OpenMAIC)THU-MAIC/OpenMAIC | 40k | — | ~502 | Automated safety check: Pass | MIT | |
| Gsd Extract Learningsopen-gsd/gsd-core | 10k | 2 repos | ~225 | Automated safety check: Notes | MIT | |
| Social-Emotional Learning Lesson DesignTHU-MAIC/OpenMAIC | 40k | — | ~435 | Automated safety check: Pass | MIT | |
| Conducting Post Incident Lessons Learnedmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Lesson Learnedpedronauck/skills | 634 | 1 repos | ~1.2k | Automated safety check: Pass | None |
Similar skills
Gsd Extract Learnings
open-gsd/gsd-core
Extract decisions, lessons, patterns, and surprises from completed phase artifacts
Social-Emotional Learning Lesson Design
THU-MAIC/OpenMAIC
Adds a social-emotional learning goal next to the subject concept in an OpenMAIC classroom lesson, without turning the class into a counseling or homeroom session.
Conducting Post Incident Lessons Learned
mukul975/Anthropic-Cybersecurity-Skills
Facilitate structured post-incident reviews to identify root causes, document what worked and failed, and produce actionable recommendations to improve future incident response.
Lesson Learned
pedronauck/skills
Analyze recent code changes via git history and extract software engineering lessons.
Scikit Learn
K-Dense-AI/scientific-agent-skills
Supports machine learning in Python with scikit-learn. An agent skill from K-Dense-AI/scientific-agent-skills.
More from compozy/compozy
All 47 skills in this repoEng Real Scenario QA
compozy/compozy
Dogfoods Compozy through an autonomous startup scenario with live providers, cross-surface observation, and strict evidence audit.
Eng Test Conventions
compozy/compozy
Go test-shape discipline for Compozy. An agent skill from compozy/compozy.
Assistant UI
compozy/compozy
Guide for assistant-ui library - AI chat UI components. An agent skill from compozy/compozy.
Assistant UI Primitives
compozy/compozy
Guide for assistant-ui UI primitives - ThreadPrimitive, ComposerPrimitive, MessagePrimitive.
Assistant UI Runtime
compozy/compozy
Guide for assistant-ui runtime system and state management. An agent skill from compozy/compozy.
Assistant UI Streaming
compozy/compozy
Guide for assistant-stream package and streaming protocols. An agent skill from compozy/compozy.
Questions about Lesson Learned
What does Lesson Learned do?
Extract evidence-backed engineering lessons from recent changes or incidents. Lesson Learned is an agent skill from compozy/compozy. Extract evidence-backed engineering lessons from recent changes or incidents.
When should I use Lesson Learned?
Lesson Learned fits situations like: requested reflection; retiring an obsolete workflow rule.
How do I install Lesson Learned in Claude Code?
Run `npx skills add compozy/compozy --skill lesson-learned -a claude-code`. Or copy the skill folder (.agents/skills/lesson-learned in compozy/compozy) into .claude/skills/lesson-learned in your project. Claude Code loads it when a task matches its description.
How do I install Lesson Learned in Codex?
Run `npx skills add compozy/compozy --skill lesson-learned -a codex`. Or copy the skill folder (.agents/skills/lesson-learned in compozy/compozy) into .agents/skills/lesson-learned in your project. Codex loads it when a task matches its description.
Can I use Lesson Learned in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add compozy/compozy --skill lesson-learned -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lesson-learned, .gemini/skills/lesson-learned, .github/skills/lesson-learned and .opencode/skills/lesson-learned in your project.
What does Lesson Learned need to run?
SKILL.md names no scripts, command-line tools or credentials: Lesson Learned is instructions for the agent only.
Does Lesson Learned access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Lesson Learned safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Lesson Learned use?
Lesson Learned is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Lesson Learned use?
About 466 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.2k tokens, read only when the agent opens those files.
What are the alternatives to Lesson Learned?
Skills that share tags, products or a category with Lesson Learned: Learning to Learn (OpenMAIC) (THU-MAIC/OpenMAIC, 40k stars), Gsd Extract Learnings (open-gsd/gsd-core, 10k stars), Social-Emotional Learning Lesson Design (THU-MAIC/OpenMAIC, 40k stars) and Conducting Post Incident Lessons Learned (mukul975/Anthropic-Cybersecurity-Skills, 34k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Lesson Learned?
compozy (a GitHub organization) maintains it in compozy/compozy, which has 2,791 GitHub stars. The repository holds 47 skills in this directory. The repository was last updated on October 8, 2026.
Source: compozy/compozy on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.