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Agent skill

Skill Retro

by kenneth-liao in kenneth-liao/ai-launchpad-marketplace

A skill your agent uses when reviewing how skills performed during a session, when the user wants to analyze skill invocations and identify improvements, or when the user says "skill retro", "review…

No licenceAuto-check passedProduct & Project Management

Install Skill Retro

skills CLI
$ npx skills add kenneth-liao/ai-launchpad-marketplace --skill skill-retro -a claude-code

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

GitHub CLI
$ gh skill install kenneth-liao/ai-launchpad-marketplace skill-retro --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/kenneth-liao/ai-launchpad-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugin-tools/skills/skill-retro .claude/skills/skill-retro && 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/

Facts

Skill name
skill-retro
GitHub stars
126
Token cost
~2.1k tokens
SKILL.md length
808 words
Files
3 (incl. scripts, references)
Skills in repo
26
Repo updated
First seen
Licence
None found

At a glance

A skill your agent uses when reviewing how skills performed during a session, when the user wants to analyze skill invocations and identify improvements, or when the user says "skill retro", "review…

  • Works in 6 steps: Preprocess Session → Analyze (Sub-Agent) → Interpret and Recommend → …
  • Reviewing how skills performed during a session
  • SKILL.md covers Process and Important Notes
  • Runs JavaScript scripts from its folder; calls node

What it does

Skill Retro is an agent skill from kenneth-liao/ai-launchpad-marketplace. Use when reviewing how skills performed during a session, when the user wants to analyze skill invocations and identify improvements, or when the user says "skill retro", "review skills", "how did skills do", "improve this skill", or "skill retrospective".

Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts and reference files (for example `references/analysis-prompt.md`).

It sits in Product & Project Management, covering Retrospectives and Subagents.

When your agent uses it

  • Reviewing how skills performed during a session
  • The user wants to analyze skill invocations and identify improvements
  • The user says skill retro
  • How did skills do

Example prompts

  • “skill retro”
  • “review skills”
  • “how did skills do”
  • “/skill-retro”

Requirements

  • Node.js

Workflow steps

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

  1. Preprocess Session
  2. Analyze (Sub-Agent)
  3. Interpret and Recommend
  4. Resolve Source Locations
  5. Implement Improvements (Parallel Sub-Agents)
  6. Summary

What it can do on your machine

Read from SKILL.md and the folder at commit 04b93d6. 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

    Ships 1 file in scripts/ (JavaScript), which the agent can run.

    Shell commands in SKILL.md call:

    • node

    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

Skill Retro loads about 2.1k tokens when it runs, and up to ~3.2k if it reads all its reference files. Until then it costs about 67 tokens; SKILL.md has 808 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~2.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.2k

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); the scripts in this folder are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 808 words (~2,122 tokens).

“Analyze how skills performed in the current session and apply improvements via skill-creator.”

— opening of SKILL.md by kenneth-liao
name
skill-retro
user-invocable
true
disable-model-invocation
true

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (scripts, references) in plugin-tools/skills/skill-retro of kenneth-liao/ai-launchpad-marketplace.

  • SKILL.md
  • references/analysis-prompt.md
  • scripts/preprocess.mjs

Open the folder on GitHubat commit 04b93d6

Compare with similar skills

Skill Retro 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 Retro compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Retro this skillkenneth-liao/ai-launchpad-marketplace126—~2.1kAutomated safety check: PassNone
RetrospectiveSzotasz/marveen117—~1.5kAutomated safety check: PassMIT
Processnotque/vexjoy-agent441—~2.1kAutomated safety check: NotesMIT
Oracle PrismSoul-Brews-Studio/arra-oracle-skills-cli123—~1.3kAutomated safety check: PassMIT
Visualization Ops SkillOpenLoaf/OpenLoaf108—~2.5kAutomated safety check: PassAGPL-3.0
Set Workflow Statesandgardenhq/sgai137—~1.2kAutomated safety check: PassCustom licence

Similar skills

  • Retrospective

    Szotasz/marveen

    Analyze the current session for improvement opportunities in skills, memory, and workflow.

    117 GitHub stars~1.5k tokensUpdated today
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    Process: retrospectives, session handoff, pair programming, subagent-driven development, condition-based waiting.

    441 GitHub stars~2.1k tokensUpdated yesterday
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Categories

Questions about Skill Retro

What does Skill Retro do?

A skill your agent uses when reviewing how skills performed during a session, when the user wants to analyze skill invocations and identify improvements, or when the user says "skill retro", "review…. Skill Retro is an agent skill from kenneth-liao/ai-launchpad-marketplace. Use when reviewing how skills performed during a session, when the user wants to analyze skill invocations and identify improvements, or when the user says "skill retro", "review skills", "how did skills do", "improve this skill", or "skill retrospective".

When should I use Skill Retro?

Skill Retro fits situations like: reviewing how skills performed during a session; the user wants to analyze skill invocations and identify improvements; the user says skill retro; how did skills do.

How do I install Skill Retro in Claude Code?

Run `npx skills add kenneth-liao/ai-launchpad-marketplace --skill skill-retro -a claude-code`. Or copy the skill folder (plugin-tools/skills/skill-retro in kenneth-liao/ai-launchpad-marketplace) into .claude/skills/skill-retro in your project. Claude Code loads it when a task matches its description.

How do I install Skill Retro in Codex?

Run `npx skills add kenneth-liao/ai-launchpad-marketplace --skill skill-retro -a codex`. Or copy the skill folder (plugin-tools/skills/skill-retro in kenneth-liao/ai-launchpad-marketplace) into .agents/skills/skill-retro in your project. Codex loads it when a task matches its description.

Can I use Skill Retro 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 kenneth-liao/ai-launchpad-marketplace --skill skill-retro -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-retro, .gemini/skills/skill-retro, .github/skills/skill-retro and .opencode/skills/skill-retro in your project.

What does Skill Retro need to run?

Going by SKILL.md and its folder, Skill Retro needs JavaScript for the scripts in its folder and the command-line tools its instructions call (node). Our summary lists: Node.js.

Does Skill Retro 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 Skill Retro 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Skill Retro use?

No licence was found for Skill Retro or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Skill Retro use?

About 2.1k tokens (SKILL.md is roughly 8.5k 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 1.1k tokens, read only when the agent opens those files.

What are the alternatives to Skill Retro?

Skills that share tags, products or a category with Skill Retro: Retrospective (Szotasz/marveen, 117 stars), Process (notque/vexjoy-agent, 441 stars), Oracle Prism (Soul-Brews-Studio/arra-oracle-skills-cli, 123 stars) and Visualization Ops Skill (OpenLoaf/OpenLoaf, 108 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Retro?

kenneth-liao (a GitHub user) maintains it in kenneth-liao/ai-launchpad-marketplace, which has 126 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on March 23, 2026.

Source: kenneth-liao/ai-launchpad-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.