skill-creator

skill-creator is a skill for Claude Code, Codex from gabrielmoreira/agent-skills-mirror. It costs 47 tokens per session (2,942 once invoked), scanned A, a copy of skill-creator, MIT.

A guide for creating or updating skills that extend an AI coding agent with specialized instructions, workflows, tools, or reference material. A skill is a self-contained package that teaches the agent how to handle a particular kind of work.

In plain words
What is it for?
Use it to create a new skill or improve an existing one. It helps organize instructions, scripts, references, templates, and tool integrations.
Why use it?
It provides a defined structure and practical rules for making these packages consistent and useful. This reduces the chance of leaving out required files, metadata, or supporting resources.

Skill for Claude CodeCodex

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

Good fit Use it to create a new skill or improve an existing one. It helps organize instructions, scripts, references, templates, and tool integrations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser
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 gabrielmoreira/agent-skills-mirror --skill skill-creator-browser
Clone the repo
git clone --depth 1 https://github.com/gabrielmoreira/agent-skills-mirror

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 skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser/github.svg)](https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser)
Your own site
<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser/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 skill-creator

Your own site · 80×15
<a href="https://agentmods.dev/skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser"><img src="https://agentmods.dev/badge/skills/gabrielmoreira/agent-skills-mirror/skill-creator-browser.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,942 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 100% copy Near-identical to another mod 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 $0.00047 $0.02942
Opus 5 $0.00023 $0.01471
Sonnet 5 $0.00009 $0.00588
Haiku 4.5 $0.00005 $0.00294

Measured 9d ago against content hash 2a3b66b337d5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

skill-creator 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 9d 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.

Origin

This is a copy

100% identical to skill-creator — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

mirrors/repos/AIPexStudio@AIPex/packages/browser-runtime/src/skill/built-in/skill-creator-browser/SKILL.md · 282 lines

How it starts

The opening of the file, as written. The whole thing — 282 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator

This skill provides guidance for creating effective skills.

About Skills

Skills are modular, self-contained packages that extend AIPex's capabilities by providing specialized knowledge, workflows, and tools. Think of them as "onboarding guides" for specific domains or tasks—they transform AIPex from a general-purpose agent into a specialized agent equipped with procedural knowledge that no model can fully possess.

What Skills Provide

  1. Specialized workflows - Multi-step procedures for specific domains
  2. Tool integrations - Instructions for working with specific file formats or APIs
  3. Domain expertise - Company-specific knowledge, schemas, business logic
  4. Bundled resources - Scripts, references, and assets for complex and repetitive tasks

Anatomy of a Skill

Every skill consists of a required SKILL.md file and optional bundled resources:

skill-name/
├── SKILL.md (required)
│   ├── **YAML frontmatter metadata** (required)
│   │   ├── name: (required)
│   │   └── description: (required)
│   └── Markdown instructions (required)
└── Bundled Resources (optional)
    ├── scripts/          - Executable code (JavaScript/Browser/etc.)
    ├── references/       - Documentation intended to be loaded into context as needed
    └── assets/           - Files used in output (templates, icons, fonts, etc.)
SKILL.md (required)

Metadata Quality: The name and description in YAML frontmatter determine when AIPex will use the skill. Be specific about what the skill does and when to use it. Use the third-person (e.g. "This skill should be used when..." instead of "Use this skill when...").

Bundled Resources (optional)
Scripts (scripts/)

Executable code (JavaScript/Browser/etc.) for tasks that require deterministic reliability or are repeatedly rewritten.

  • When to include: When the same code is being rewritten repeatedly or deterministic reliability is needed
  • Example: scripts/rotate_pdf.js for PDF rotation tasks
  • Benefits: Token efficient, deterministic, may be executed without loading into context
  • Main function requirement: Every script must export a main function or have a main function as the entry point. This function serves as the standard interface for executing the script's functionality.
    • Export examples:
      // Option 1: Direct export
      function main(args) {
        // script logic here
      }
      module.exports = main;
      
      // Option 2: Object export
      function main(args) {
        // script logic here
      }
      module.exports = { main };
      
  • Note: Scripts may still need to be read by AIPex for patching or environment-specific adjustments

Read the full file on GitHub · 282 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. 9d ago First seen · 282 lines · 47 tokens per session scan A 2a3b66b337d5

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository gabrielmoreira/agent-skills-mirror (17 stars, last pushed yesterday), licensed MIT. It adds 47 tokens to every session and 2,942 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to skill-creator, differing in 0 lines, and is treated as a copy.

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