Finishing a Development Branch
obra/superpowers
Walks the last step of a branch: confirm tests pass, detect the git environment, ask how to integrate, carry out your choice and clean up the worktree.
Analyze recent code changes via git history and extract software engineering lessons.
Install Lesson Learned
$ npx skills add pedronauck/skills --skill lesson-learned -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install pedronauck/skills 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/pedronauck/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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 pedronauck/skills --skill lesson-learned -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install pedronauck/skills lesson-learned --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pedronauck/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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 pedronauck/skills --skill lesson-learned -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install pedronauck/skills lesson-learned --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pedronauck/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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/pedronauck/skills.git --path skills/curated/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 pedronauck/skills --skill lesson-learned -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install pedronauck/skills lesson-learned --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pedronauck/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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 pedronauck/skills 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 pedronauck/skills --skill lesson-learned -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/pedronauck/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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 pedronauck/skills --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 pedronauck/skills lesson-learned --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pedronauck/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/curated/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/pedronauck/skills/tree/main/skills/curated/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
- 634
- Used in
- 1 other repo
- Token cost
- ~1.2k tokens
- SKILL.md length
- 541 words
- Files
- 4 (incl. references)
- Skills in repo
- 65
- Repo updated
- First seen
- Licence
- None found
At a glance
Analyze recent code changes via git history and extract software engineering lessons.
- Works in 4 steps: Determine Scope → Gather Changes → Analyze → …
- The user asks what is the lesson here?
- SKILL.md covers Before You Begin, Phase 1: Determine Scope, Phase 2: Gather Changes and Phase 3: Analyze, plus 3 more sections
- Calls git
What it does
Lesson Learned is an agent skill from pedronauck/skills. Analyze recent code changes via git history and extract software engineering lessons. Use when the user asks 'what is the lesson here?', 'what can I learn from this?', 'engineering takeaway', 'what did I just learn?', 'reflect on this code', or wants to extract principles from recent work.
Its SKILL.md is about 1.2k 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`).
It sits in Development, covering Git workflow. It works with Git. The repository describes itself as: My personal favorite skills.
When your agent uses it
- The user asks what is the lesson here?
- What can I learn from this?
- Engineering takeaway
- What did I just learn?
Example prompts
- “what is the lesson here?”
- “what can I learn from this?”
- “engineering takeaway”
- “/lesson-learned”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Determine Scope
- Gather Changes
- Analyze
- Present the Lesson
What it can do on your machine
Read from SKILL.md and the folder at commit 0422940. 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
Shell commands in SKILL.md call:
git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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 1.2k tokens when it runs, and up to ~3.4k if it reads all its reference files. Until then it costs about 76 tokens; SKILL.md has 541 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 541 words (~1,188 tokens).
“Extract specific, grounded software engineering lessons from actual code changes. Not a lecture -- a mirror. Show the user what their code already demonstrates.”
- name
- lesson-learned
Files
SKILL.md and 3 other files (references) in skills/curated/lesson-learned of pedronauck/skills.
- SKILL.md
- README.md
- references/anti-patterns.md
- references/se-principles.md
Open the folder on GitHubat commit 0422940
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in pedronauck/skills, which our catalogue first saw on October 7, 2026.
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 skillpedronauck/skills | 634 | 1 repos | ~1.2k | Automated safety check: Pass | None | |
| Finishing a Development Branchobra/superpowers | 296k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Code Design Rationale Investigatorcursor/plugins | 10k | 9 repos | ~2.6k | Automated safety check: Pass | None | |
| Contributor-First PR MergeHKUDS/OpenHarness | 16k | 1 repos | ~847 | Automated safety check: Pass | MIT | |
| Migrate Internal Package into GhostTryGhost/Ghost | 55k | — | ~3.8k | Automated safety check: Pass | MIT | |
| Create Pull Requestcline/cline | 70k | 1 repos | ~1.6k | Automated safety check: Pass | Apache-2.0 |
Similar skills
- Official
Code Design Rationale Investigator
cursor/plugins
Digs into why code is shaped the way it is by checking git history, pull requests and connected tools in parallel, then reporting a cited read on the tradeoffs.
Contributor-First PR Merge
HKUDS/OpenHarness
Merges external GitHub pull requests while keeping the original author credited, and fixes conflicts after the merge instead of rewriting the contribution.
Migrate Internal Package into Ghost
TryGhost/Ghost
Moves a package from another TryGhost repository into Ghost as an internal workspace package while keeping its Git history, with checkpoints for the steps that need an administrator.
Create Pull Request
cline/cline
Opens a GitHub pull request from your current branch with the gh CLI, after reviewing the commits and diff and gathering the details the PR needs.
Git Merge Conflict Resolver
tailcallhq/forgecode
Resolves Git merge conflicts with a plan-first workflow that keeps both sides' intent, regenerates lock files and backs up deleted-but-modified files.
More from pedronauck/skills
All 65 skills in this repoDeep Review
pedronauck/skills
Review branch diffs, working trees, or PRs in depth with defect, polish and cross-contract coverage.
Yc Apply
pedronauck/skills
Prepare, review, and package Y Combinator application answers and founder-video notes using the live form and verified founder facts.
Professional Communication
pedronauck/skills
Guide technical communication for software developers. An agent skill from pedronauck/skills.
Tauri V2
pedronauck/skills
Tauri v2+ cross-platform app development with Rust backend. An agent skill from pedronauck/skills.
Hormozi Ad Factory
pedronauck/skills
Generates 150-750+ ad variations using Alex Hormozi's combinatorial Hook x Meat x CTA framework.
Yt Master
pedronauck/skills
Plans and improves YouTube ideas, titles, thumbnail concepts, scripts, retention, channel strategy, and metric-based diagnosis.
Related
Works with
Categories
Questions about Lesson Learned
What does Lesson Learned do?
Analyze recent code changes via git history and extract software engineering lessons. Lesson Learned is an agent skill from pedronauck/skills. Analyze recent code changes via git history and extract software engineering lessons.
When should I use Lesson Learned?
Lesson Learned fits situations like: the user asks what is the lesson here?; what can I learn from this?; engineering takeaway; what did I just learn?.
How do I install Lesson Learned in Claude Code?
Run `npx skills add pedronauck/skills --skill lesson-learned -a claude-code`. Or copy the skill folder (skills/curated/lesson-learned in pedronauck/skills) 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 pedronauck/skills --skill lesson-learned -a codex`. Or copy the skill folder (skills/curated/lesson-learned in pedronauck/skills) 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 pedronauck/skills --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?
Going by SKILL.md and its folder, Lesson Learned needs the command-line tools its instructions call (git).
Does Lesson Learned access the network?
SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. 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?
No licence was found for Lesson Learned or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Lesson Learned use?
About 1.2k tokens (SKILL.md is roughly 4.8k 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: Finishing a Development Branch (obra/superpowers, 296k stars), Code Design Rationale Investigator (cursor/plugins, 10k stars), Contributor-First PR Merge (HKUDS/OpenHarness, 16k stars) and Migrate Internal Package into Ghost (TryGhost/Ghost, 55k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Lesson Learned?
pedronauck (a GitHub user) maintains it in pedronauck/skills, which has 634 GitHub stars. The repository holds 65 skills in this directory. The repository was last updated on September 14, 2026.
Source: pedronauck/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.