skill-creator

skill-creator is a skill for Claude Code, Codex from alebgl77/claude-inc. It costs 93 tokens per session (972 once invoked), scanned A, original, MIT.

A process for creating new SKILL.md files, which are instruction files that teach an agent how to perform a repeatable job. It interviews the author about the task, writes the skill structure, and tests whether typical requests trigger it.

In plain words
What is it for?
Defining a job, choosing a unique lowercase slug, writing a trigger description, creating the standard workflow and output sections, saving the file in the repository, and testing five paraphrased requests.
Why use it?
It turns a proven workflow into a reusable instruction set for a team. It also helps fix skills that trigger too rarely or when a different skill should be used.

Skill for Claude CodeCodex

Part of the claude-inc plugin — 50 skills, 3 commands, 8 agents shipped together

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.

agentmods
npx agentmods add skills/alebgl77/claude-inc/skill-creator
Any agent
npx skills add alebgl77/claude-inc --skill skill-creator
Clone the repo
git clone --depth 1 https://github.com/alebgl77/claude-inc

Made for: Claude Code, Codex.

Or install claude-inc, the plugin that ships this one along with the rest of its 50 skills, 3 commands, 8 agents.

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/alebgl77/claude-inc/skill-creator.svg)](https://agentmods.dev/skills/alebgl77/claude-inc/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/alebgl77/claude-inc/skill-creator"><img src="https://agentmods.dev/badge/skills/alebgl77/claude-inc/skill-creator.svg" alt="Measured on agentmods" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 972 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00093 $0.00972
Opus 5 $0.00046 $0.00486
Sonnet 5 $0.00019 $0.00194
Haiku 4.5 $0.00009 $0.00097

Measured 5d ago against content hash 575426cd84f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 5d 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.

skills/skill-creator/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator — Skill Smith

"Build your own skills"

When to use

  • "Make me a skill for " — anything you've done three times deserves a SKILL.md
  • "Turn this workflow into a skill" after a session that went well
  • "Add a new employee to " in this repo
  • "My skill never triggers" / "the wrong skill fires" — description surgery
  • Standardizing a process so the whole team runs it the same way

Workflow

  1. Interview for the job-to-be-done: the task, three real phrasings the user would type to ask for it, available inputs, the artifact that means "done", and what must never happen.
  2. Choose the slug: lowercase, hyphenated, specific (api-changelog, not helper); check skills/ for collisions.
  3. Write the description before the body — it is the trigger. Third person, capability first, then "Use when ..." quoting the phrasings from step 1. Hard limit 500 characters.
  4. Write the body in this repo's format: # Name — Role, quoted tagline, ## When to use, ## Workflow (5–9 executable steps), ## Output format (code-block template), ## Quality bar (checkboxes), ## Example.
  5. Save to skills/<slug>/SKILL.md — directory name must equal frontmatter name, exactly.
  6. Trigger-test with five paraphrased asks: a synonym rewrite, a vague version, a jargon version, an adjacent-but-different task (must NOT fire), and the exact phrase. Judge each against the description alone.
  7. Iterate the description until at least 4/5 positives fire and the negative stays quiet — widen with user vocabulary, narrow with distinguishing nouns.
  8. Dry-run the workflow once end to end; rewrite any step that needed unstated context.

Frontmatter contract

---
name: <slug>            # must equal the directory name, lowercase-hyphenated
description: <capability + "Use when ..." with real user phrases; third person; under 500 chars>
---

Body sections, in order: title with role, tagline quote, When to use, Workflow, Output format, Quality bar, Example.

Read the full file on GitHub · 79 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. 5d ago First seen · 79 lines · 93 tokens per session scan A 575426cd84f2

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository alebgl77/claude-inc (14 stars, last pushed 2d ago), licensed MIT. It adds 93 tokens to every session and 972 once invoked, about $0.0005 per session on Opus 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.