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create_skill

create_skill is a skill for Claude Code, Codex from AliasJeff/ACLIx. It costs 21 tokens per session (813 once invoked), scanned A, original, MIT.

Instructions for creating a new command-line skill as a directory with a required instruction file and optional supporting files. A command-line skill is a reusable set of instructions and resources for an agent.

In plain words
What is it for?
Use them when scaffolding a new skill in a project or user-level skill directory.
Why use it?
They define the information that must be agreed on before creating files, including the skill's scope, name, and description.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 23repo 6mo ago A scan 21 tokens original MIT

Good fit Use them when scaffolding a new skill in a project or user-level skill directory.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aliasjeff/aclix/create_skill
View source ↗ AliasJeff/ACLIx
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add AliasJeff/ACLIx --skill create_skill
Clone the repo
git clone --depth 1 https://github.com/AliasJeff/ACLIx

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for create_skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/aliasjeff/aclix/create_skill/github.svg)](https://agentmods.dev/skills/aliasjeff/aclix/create_skill)
Your own site
<a href="https://agentmods.dev/skills/aliasjeff/aclix/create_skill"><img src="https://agentmods.dev/badge/skills/aliasjeff/aclix/create_skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for create_skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/aliasjeff/aclix/create_skill"><img src="https://agentmods.dev/badge/skills/aliasjeff/aclix/create_skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 813 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00021 $0.00813
Opus 5.5 $0.00008 $0.00325
Sonnet 5.5 $0.00004 $0.00163
Haiku 4.5 $0.00002 $0.00081

Measured 2mo ago against content hash 28c88ba6653c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

create_skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

src/builtin-skills/create_skill/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose

This skill defines how to scaffold a new Anthropic-style skill for ACLIx: one directory per skill, SKILL.md as the entry file, and optional scripts/ and reference/ assets. Follow these steps in order; do not skip user confirmation of scope and naming.

Standard Operating Procedure

Step 1 — Confirm scope, name, and description

Use the ask_user tool to agree with the human on all of the following before creating any files:

  1. Target scope

    • Project scope: ./.aclix/skills/ (relative to the current working directory / project root).
    • User global scope: ~/.aclix/skills/ (home directory, portable across projects).

  2. Skill name — Must be a single filesystem-safe identifier (no spaces; use lowercase letters, digits, and underscores if needed). This name becomes the folder name under the chosen scope.

  3. Short description — One or two sentences that will appear in skill listings and may be mirrored in the new skill’s frontmatter description field.

If anything is ambiguous, ask follow-up questions via ask_user until all three are explicit.

Step 2 — Create directory layout

Use the shell tool to create the directory tree (adjust <scope> and <skill_name> to the values from Step 1):

  • <scope>/<skill_name>/scripts/
  • <scope>/<skill_name>/reference/

Example pattern (conceptual):

  • mkdir -p "<scope>/<skill_name>/scripts" "<scope>/<skill_name>/reference"

Use absolute paths when the human prefers them, or resolve paths relative to the confirmed project root. Ensure mkdir -p so existing parents are not an error.

Step 3 — Author SKILL.md

Use the file_write tool to create:

<scope>/<skill_name>/SKILL.md

The file must include:

  1. YAML frontmatter at the very top, with at least:
    • name: — Should match the folder name (<skill_name>) unless the user explicitly requests otherwise.
    • description: — The agreed short description from Step 1.

Read the full file on GitHub · 70 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 70 lines · 21 tokens per session scan A 28c88ba6653c

Subscribe to this mod's changes

create_skill is a skill published in the GitHub repository AliasJeff/ACLIx (23 stars, last pushed 6mo ago), licensed MIT. It adds 21 tokens to every session and 813 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Building agents
Related

create_skill compared with skills from other repositories

create_skill next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
create_skillAliasJeff/ACLIxSkill236mo agoMITA21Claude Code, Codex
imagegenopenai/codexSkill135ktodayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill100ktodayApache-2.0A19Claude Code
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill80k6d agoMITA200Claude Code, Codex
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
chat-pet-sprite-creationmicrosoft/vscodeSkill195ktodayMITA53Claude Code, Codex