Agent skill

Creating Skills

by aiskillstore in aiskillstore/marketplace

Guides creation of effective Agent Skills with proper structure and validation.

No licenceAuto-check passedDevelopment

Install Creating Skills

skills CLI
$ npx skills add aiskillstore/marketplace --skill creating-skills -a claude-code

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

GitHub CLI
$ gh skill install aiskillstore/marketplace creating-skills --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/awais68/creating-skills .claude/skills/creating-skills && 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
creating-skills
GitHub stars
433
Token cost
~2.7k tokens
SKILL.md length
1,283 words
Files
8 (incl. scripts, references)
Skills in repo
1,044
Repo updated
First seen
Licence
None found

At a glance

Guides creation of effective Agent Skills with proper structure and validation.

  • Works in 6 steps: Understanding the Skill with Concrete… → Planning the Reusable Skill Contents → Initializing the Skill → …
  • Users want to create a new skill
  • SKILL.md covers About Skills, Core Principles, Skill Creation Process and Verification, plus 2 more sections
  • Runs Python scripts from its folder; calls python3

What it does

Creating Skills is an agent skill from aiskillstore/marketplace. Guides creation of effective Agent Skills with proper structure and validation. Use when users want to create a new skill, update an existing skill, or need guidance on skill design patterns, SKILL.md format, or verify.py implementation. NOT when just using existing skills (use those skills directly).

Its SKILL.md is about 2.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 9 other files, including scripts and reference files (for example `references/design-patterns.md`, `references/skill-activation.md` and `references/two-stage-review.md`).

It sits in Development, covering Design patterns. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Users want to create a new skill
  • Update an existing skill
  • Need guidance on skill design patterns
  • SKILL.md format

Example prompts

  • “Use the creating-skills skill to guide creation of effective Agent Skills with proper structure and validation”
  • “/creating-skills”

Requirements

  • Python 3

Workflow steps

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

  1. Understanding the Skill with Concrete Examples
  2. Planning the Reusable Skill Contents
  3. Initializing the Skill
  4. Edit the Skill
  5. Packaging a Skill
  6. Iterate

What it can do on your machine

Read from SKILL.md and the folder at commit 44923f3. 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 3 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python3

    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

Creating Skills loads about 2.7k tokens when it runs, and up to ~4.1k if it reads all its reference files. Until then it costs about 80 tokens; SKILL.md has 1,283 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~80
When it runs · the whole SKILL.md, loaded when a task matches
~2.7k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.1k

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 1,283 words (~2,740 tokens).

“This skill provides guidance for creating effective skills.”

— opening of SKILL.md by aiskillstore
name
creating-skills

Read the full SKILL.md on GitHub

Files

SKILL.md and 7 other files (scripts, references) in skills/awais68/creating-skills of aiskillstore/marketplace.

  • SKILL.md
  • references/design-patterns.md
  • references/skill-activation.md
  • references/two-stage-review.md
  • scripts/init_skill.py
  • scripts/package_skill.py
  • scripts/verify.py
  • skill-report.json

Open the folder on GitHubat commit 44923f3

Compare with similar skills

Creating Skills 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.

Creating Skills compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Creating Skills this skillaiskillstore/marketplace433—~2.7kAutomated safety check: PassNone
Exploreyonatangross/orchestkit292—~3.9kAutomated safety check: NotesMIT
Team Composition Patternswshobson/agents40k—~2kAutomated safety check: PassMIT
Vercel Composition Patternssupabase/supabase111k58 repos~726Automated safety check: PassMIT
Swiftui View RefactorDimillian/Skills4k5 repos~2kAutomated safety check: PassMIT
RTK Rust Design Patternsrtk-ai/rtk83k—~1.9kAutomated safety check: PassApache-2.0

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Questions about Creating Skills

What does Creating Skills do?

Guides creation of effective Agent Skills with proper structure and validation. Creating Skills is an agent skill from aiskillstore/marketplace. Guides creation of effective Agent Skills with proper structure and validation.

When should I use Creating Skills?

Creating Skills fits situations like: users want to create a new skill; update an existing skill; need guidance on skill design patterns; SKILL.md format.

How do I install Creating Skills in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill creating-skills -a claude-code`. Or copy the skill folder (skills/awais68/creating-skills in aiskillstore/marketplace) into .claude/skills/creating-skills in your project. Claude Code loads it when a task matches its description.

How do I install Creating Skills in Codex?

Run `npx skills add aiskillstore/marketplace --skill creating-skills -a codex`. Or copy the skill folder (skills/awais68/creating-skills in aiskillstore/marketplace) into .agents/skills/creating-skills in your project. Codex loads it when a task matches its description.

Can I use Creating Skills 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 aiskillstore/marketplace --skill creating-skills -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/creating-skills, .gemini/skills/creating-skills, .github/skills/creating-skills and .opencode/skills/creating-skills in your project.

What does Creating Skills need to run?

Going by SKILL.md and its folder, Creating Skills needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.

Does Creating Skills 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 Creating Skills 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 Creating Skills use?

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

How many tokens does Creating Skills use?

About 2.7k tokens (SKILL.md is roughly 11k 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 1.4k tokens, read only when the agent opens those files.

What are the alternatives to Creating Skills?

Skills that share tags, products or a category with Creating Skills: Explore (yonatangross/orchestkit, 292 stars), Team Composition Patterns (wshobson/agents, 40k stars), Vercel Composition Patterns (supabase/supabase, 111k stars) and Swiftui View Refactor (Dimillian/Skills, 4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Creating Skills?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 433 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 10, 2026.

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