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Agent skill

Skill Creator

by holaboss-ai in holaboss-ai/holaOS

Guide for creating effective skills. An agent skill from holaboss-ai/holaOS.

Custom licenceAuto-check passedAgent Workflows

Install Skill Creator

skills CLI
$ npx skills add holaboss-ai/holaOS --skill skill-creator -a claude-code

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

GitHub CLI
$ gh skill install holaboss-ai/holaOS skill-creator --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/holaboss-ai/holaOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/runtime/harnesses/src/embedded-skills/skill-creator .claude/skills/skill-creator && 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-creator
GitHub stars
11k
Token cost
~323 tokens
SKILL.md length
136 words
Files
1
Skills in repo
30
Repo updated
First seen
Licence
Custom licence

At a glance

Guide for creating effective skills. An agent skill from holaboss-ai/holaOS.

  • Works in 10 steps: Workspace-local skills always live under… → Create or update each workspace skill… → This embedded skill is guidance only: do… → …
  • Updating a skill
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve Skill authoring

What it does

Skill Creator is an agent skill from holaboss-ai/holaOS. Guide for creating effective skills. Use when creating or updating a skill.

Its SKILL.md is about 320 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering Skill authoring. The repository describes itself as: Open-source agentic workspace enterprises can make their own. Connect the systems you already run — 100+ integrations, MCP, chat tools, apps, browser, local files — with shared…

When your agent uses it

  • Updating a skill
  • Tasks that involve Skill authoring

Example prompts

  • “/skill-creator”

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. Workspace-local skills always live under skills/ at the workspace root.
  2. Create or update each workspace skill under skills// and save SKILL.md plus any helper files there.
  3. This embedded skill is guidance only: do not write new workspace skills into runtime/harnesses/src/embedded-skills/.
  4. Clarify the task and gather concrete examples.
  5. Define minimal reusable structure and naming.
  6. Enforce canonical SKILL.md format
  7. Start from this template and fill in concrete content
  8. Keep SKILL.md concise; use references/scripts only when needed.
  9. Validate with a real invocation path.
  10. Iterate from usage feedback.

What it can do on your machine

Read from SKILL.md and the folder at commit 4684714. 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 (its code samples are markdown).

    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 Creator loads about 323 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 136 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~22
When it runs · the whole SKILL.md, loaded when a task matches
~323

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 136 words (~323 tokens).

“Use this skill when defining or updating reusable Codex skills.”

— opening of SKILL.md by holaboss-ai, Custom licence
name
skill-creator

Read the full SKILL.md on GitHub

Files

Just SKILL.md in runtime/harnesses/src/embedded-skills/skill-creator of holaboss-ai/holaOS.

Open the folder on GitHubat commit 4684714

Compare with similar skills

Skill Creator 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 Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Creator this skillholaboss-ai/holaOS11k—~323Automated safety check: PassCustom licence
Skill CreatorAzure/azqr79589 repos~8.2kAutomated safety check: PassApache-2.0
Claude Code Skill Developer Guidediet103/claude-code-infrastructure-showcase10k11 repos~3.5kAutomated safety check: PassMIT
Darwin Skill Optimizeralchaincyf/darwin-skill6.2k1 repos~4.7kAutomated safety check: PassMIT
Claude Code Command Developmentanthropics/claude-plugins-official38k10 repos~4.8kAutomated safety check: PassApache-2.0
Claude Code Plugin Structureanthropics/claude-plugins-official38k10 repos~3.4kAutomated safety check: PassApache-2.0

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Categories

Questions about Skill Creator

What does Skill Creator do?

Guide for creating effective skills. An agent skill from holaboss-ai/holaOS. Skill Creator is an agent skill from holaboss-ai/holaOS. Guide for creating effective skills.

When should I use Skill Creator?

Skill Creator fits situations like: updating a skill; tasks that involve Skill authoring.

How do I install Skill Creator in Claude Code?

Run `npx skills add holaboss-ai/holaOS --skill skill-creator -a claude-code`. Or copy the skill folder (runtime/harnesses/src/embedded-skills/skill-creator in holaboss-ai/holaOS) into .claude/skills/skill-creator in your project. Claude Code loads it when a task matches its description.

How do I install Skill Creator in Codex?

Run `npx skills add holaboss-ai/holaOS --skill skill-creator -a codex`. Or copy the skill folder (runtime/harnesses/src/embedded-skills/skill-creator in holaboss-ai/holaOS) into .agents/skills/skill-creator in your project. Codex loads it when a task matches its description.

Can I use Skill Creator 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 holaboss-ai/holaOS --skill skill-creator -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-creator, .gemini/skills/skill-creator, .github/skills/skill-creator and .opencode/skills/skill-creator in your project.

What does Skill Creator need to run?

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

Does Skill Creator 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 Creator 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 Skill Creator use?

Skill Creator has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Skill Creator use?

About 323 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Skill Creator?

Skills that share tags, products or a category with Skill Creator: Skill Creator (Azure/azqr, 795 stars), Claude Code Skill Developer Guide (diet103/claude-code-infrastructure-showcase, 10k stars), Darwin Skill Optimizer (alchaincyf/darwin-skill, 6.2k stars) and Claude Code Command Development (anthropics/claude-plugins-official, 38k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Creator?

holaboss-ai (a GitHub organization) maintains it in holaboss-ai/holaOS, which has 11,455 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on August 21, 2026.

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