Agent skill

Aar

After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next.

MITAuto-check passedProduct & Project Management

Install Aar

skills CLI

$ npx skills add neurofoo/agent-skills --skill aar -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install neurofoo/agent-skills aar --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/aar .claude/skills/aar && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "aar" agent skill from https://github.com/neurofoo/agent-skills/tree/main/aar into .claude/skills/aar/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aar", 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

$skill-installer install https://github.com/neurofoo/agent-skills/tree/main/aar

Type 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.

skills CLI

$ npx skills add neurofoo/agent-skills --skill aar -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install neurofoo/agent-skills aar --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/aar .agents/skills/aar && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "aar" agent skill from https://github.com/neurofoo/agent-skills/tree/main/aar into .agents/skills/aar/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aar", 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.

skills CLI

$ npx skills add neurofoo/agent-skills --skill aar -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install neurofoo/agent-skills aar --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/aar .cursor/skills/aar && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "aar" agent skill from https://github.com/neurofoo/agent-skills/tree/main/aar into .cursor/skills/aar/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aar", 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

$ gemini skills install https://github.com/neurofoo/agent-skills.git --path aar

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add neurofoo/agent-skills --skill aar -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install neurofoo/agent-skills aar --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/aar .gemini/skills/aar && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "aar" agent skill from https://github.com/neurofoo/agent-skills/tree/main/aar into .gemini/skills/aar/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aar", 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.

GitHub CLI

$ gh skill install neurofoo/agent-skills aar

Installs 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).

skills CLI

$ npx skills add neurofoo/agent-skills --skill aar -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/aar .github/skills/aar && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "aar" agent skill from https://github.com/neurofoo/agent-skills/tree/main/aar into .github/skills/aar/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aar", 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.

skills CLI

$ npx skills add neurofoo/agent-skills --skill aar -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install neurofoo/agent-skills aar --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/neurofoo/agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/aar .opencode/skills/aar && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "aar" agent skill from https://github.com/neurofoo/agent-skills/tree/main/aar into .opencode/skills/aar/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "aar", 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: aar
GitHub stars: 119
Token cost: ~608 tokens
SKILL.md length: 269 words
Files: 4 (incl. references)
Skills in repo: 22
Repo updated: Jan 19, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next.

Works in 4 steps: What Was Expected? → What Actually Happened? → Why the Difference? → …
Tasks that involve Retrospectives
SKILL.md covers Instructions, 1. What Was Expected?, 2. What Actually Happened? and 3. Why the Difference?, plus 2 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Aar is an agent skill from neurofoo/agent-skills. After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next. Use after projects, launches, presentations, or any significant event.

Its SKILL.md is about 610 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `commands/aar.md`, `commands/review.md` and `references/examples.md`).

It sits in Product & Project Management, covering Retrospectives. The repository describes itself as: Agent Skills for Claude Code and OpenCode. The licence is MIT.

When your agent uses it

Tasks that involve Retrospectives

Example prompts

“/aar”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

What Was Expected?
What Actually Happened?
Why the Difference?
What Do We Do Next?

What it can do on your machine

Read from SKILL.md and the folder at commit 0e7ac2a. 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

Aar loads about 608 tokens when it runs, and up to ~2.7k if it reads all its reference files. Until then it costs about 47 tokens; SKILL.md has 269 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~47
When it runs · the whole SKILL.md, loaded when a task matches: ~608
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~2.7k

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 neurofoo/agent-skills at commit 0e7ac2a, republished under its MIT licence (© neurofoo). 269 words, ~608 tokens.

Download SKILL.mdSave it as .claude/skills/aar/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.

name: aar
description: After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next. Use after projects, launches, presentations, or any significant event.
user-invocable: true

After-Action Review

Conduct a structured debrief to extract learning from any significant event or experience.

Instructions

Work through the four core questions honestly and specifically. Focus on events and systems, not blaming individuals.

Output Format

Event: What are we reviewing? Date: When did it happen? Participants: Who was involved?

1. What Was Expected?

Before the event, what did we think would happen?

Goals/Objectives

[What were we trying to achieve?]

Plan

[What was the plan to achieve it?]

Success Criteria

[How would we know if we succeeded?]

Assumptions

[What did we assume would be true?]

2. What Actually Happened?

Facts only—what occurred, not why

Timeline

Time	Event
[When]	[What happened]

Outcomes

[What results did we get?]

Compared to Expected

Expected	Actual	Gap
[expectation]	[reality]	[+/-]

3. Why the Difference?

Analysis of the gap between expected and actual

What Went Well (sustain these)

Success	Contributing Factors
[what worked]	[why it worked]

What Didn't Go Well (improve these)

Problem	Root Cause
[what failed]	[why it failed]

Surprises

[Things we didn't anticipate]

4. What Do We Do Next?

Specific actions to sustain or improve

Sustain (keep doing these)

Action	Owner	How to Protect It
[what to continue]	[who]	[mechanism]

Improve (change these)

Action	Owner	By When
[what to change]	[who]	[deadline]

Key Takeaways Top 3 lessons from this review:

[Lesson]
[Lesson]
[Lesson]

Follow-up When will we check if improvements are working?

Guidelines

Do this soon—memory fades fast
Be specific: "Communication failed" → "We didn't update Slack until hour 3"
Balance: Include what went well, not just problems
Assign owners: Insights without ownership become forgotten
Make it safe: Blame shuts down honesty

$ARGUMENTS

Files

SKILL.md and 3 other files (references) in aar of neurofoo/agent-skills.

SKILL.md
commands/aar.md
commands/review.md
references/examples.md

Open the folder on GitHubat commit 0e7ac2a

Compare with similar skills

Aar 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.

Aar compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Aar this skillneurofoo/agent-skills	119	—	~608	Automated safety check: Pass	MIT	8 mo ago
Weekly Engineering Retrogarrytan/gstack	136k	—	~2.4k	Automated safety check: Pass	MIT	today
Dough Execute Planterryyin/lizard	2.5k	—	~4.3k	Automated safety check: Pass	Custom licence	today
After Action Reportrampstackco/claude-skills	935	1 repos	~2.5k	Automated safety check: Pass	MIT	today
Oral Paper SkillAdkid-Zephyr/oral-paper-skill	333	—	~1.9k	Automated safety check: Pass	None	19 days ago
Deck Retroasheshgoplani/agent-deck	1k	—	~1.8k	Automated safety check: Pass	MIT	yesterday

Similar skills

Weekly Engineering Retro
garrytan/gstack
Builds a weekly engineering retrospective from git history: commit counts, per-person contributions, work patterns and code quality numbers over a chosen window.
136k GitHub stars~2.4k tokensUpdated today
Product & Project ManagementAuto-check passed
Dough Execute Plan
terryyin/lizard
Executes one selected story or bounded retrospective correction through an executable plan, or one authorized planless slice from a selected simple story or a contextual instruction, with…
2.5k GitHub stars~4.3k tokensUpdated today
Product & Project ManagementAuto-check passed
After Action Report
rampstackco/claude-skills
Run a structured after-action review (postmortem, retrospective) on a launch, incident, or completed project to capture timeline, root cause analysis, contributing factors, and actionable lessons.
935 GitHub starsUsed in 1 repo~2.5k tokens
Product & Project ManagementAuto-check passed
Oral Paper Skill
Adkid-Zephyr/oral-paper-skill
Help authors learn from exemplary ICLR, ICML, and NeurIPS papers through source-linked manuscript comparisons, concrete writing and experiment suggestions, and guided reflection.
333 GitHub stars~1.9k tokensUpdated 19 days ago
Product & Project ManagementAuto-check passed
Deck Retro
asheshgoplani/agent-deck
Run a fully local agent-deck retrospective over the user's own transcripts, Recall index and logs.
1k GitHub stars~1.8k tokensUpdated yesterday
Product & Project ManagementAuto-check passed
Dough Execution Retrospective
terryyin/lizard
Reviews planned, completed planless quick, or quick-to-planned execution against original intent, aggregate commits, current whole-product architecture, and tests, including after cleanup.
2.5k GitHub stars~4k tokensUpdated today
Product & Project ManagementAuto-check passed

Questions about Aar

What does Aar do?

After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next. Aar is an agent skill from neurofoo/agent-skills. After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next.

When should I use Aar?

Aar fits situations like: tasks that involve Retrospectives.

How do I install Aar in Claude Code?

Run `npx skills add neurofoo/agent-skills --skill aar -a claude-code`. Or copy the skill folder (aar in neurofoo/agent-skills) into .claude/skills/aar in your project. Claude Code loads it when a task matches its description.

How do I install Aar in Codex?

Run `npx skills add neurofoo/agent-skills --skill aar -a codex`. Or copy the skill folder (aar in neurofoo/agent-skills) into .agents/skills/aar in your project. Codex loads it when a task matches its description.

Can I use Aar 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 neurofoo/agent-skills --skill aar -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/aar, .gemini/skills/aar, .github/skills/aar and .opencode/skills/aar in your project.

What does Aar need to run?

SKILL.md names no scripts, command-line tools or credentials: Aar is instructions for the agent only.

Does Aar 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 Aar 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 Aar use?

Aar 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 Aar use?

About 608 tokens (SKILL.md is roughly 2.4k 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 2.1k tokens, read only when the agent opens those files.

What are the alternatives to Aar?

Skills that share tags, products or a category with Aar: Weekly Engineering Retro (garrytan/gstack, 136k stars), Dough Execute Plan (terryyin/lizard, 2.5k stars), After Action Report (rampstackco/claude-skills, 935 stars) and Oral Paper Skill (Adkid-Zephyr/oral-paper-skill, 333 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Aar?

neurofoo (a GitHub user) maintains it in neurofoo/agent-skills, which has 119 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on January 19, 2026.

Source: neurofoo/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Aar

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

After-Action Review

Instructions

Output Format

1. What Was Expected?

2. What Actually Happened?

3. Why the Difference?

4. What Do We Do Next?

Guidelines

Files

Compare with similar skills

Similar skills

More from neurofoo/agent-skills

Related

Questions about Aar