skill-creator

skill-creator is a skill for Claude Code, Codex from dallay/agents-skills. It costs 38 tokens per session (1,258 once invoked), scanned A, original, MIT.

A guide for creating or updating Agent Skills, which are reusable instructions that teach an AI agent how to handle a recurring workflow.

In plain words
What is it for?
Use it to plan, write, review, or organize skills with instructions, templates, examples, and reference files.
Why use it?
It helps decide when a skill is appropriate and gives the required file structure and documentation pattern.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions AGENTS.md.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./scripts/validate-skills.sh.

Good fit Use it to plan, write, review, or organize skills with instructions, templates, examples, and reference files.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/dallay/agents-skills
agentmods
npx agentmods add skills/dallay/agents-skills/skill-creator

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/dallay/agents-skills/skill-creator.svg)](https://agentmods.dev/skills/dallay/agents-skills/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/dallay/agents-skills/skill-creator"><img src="https://agentmods.dev/badge/skills/dallay/agents-skills/skill-creator.svg" alt="Measured on agentmods" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,258 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 $0.00038 $0.01258
Opus 5 $0.00019 $0.00629
Sonnet 5 $0.00008 $0.00252
Haiku 4.5 $0.00004 $0.00126

Measured 7d ago against content hash b7d5c857793a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 7d 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 · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator Guide

This guide covers when to create a skill, how to structure it, and how to keep it aligned with the official Agent Skills specification.

When to Create a Skill

Create a skill when:

  • A pattern is used repeatedly and AI needs guidance
  • Project-specific conventions differ from generic best practices
  • Complex workflows need step-by-step instructions
  • Decision trees help AI choose the right approach

Don't create a skill when:

  • Documentation already exists (create a reference instead)
  • Pattern is trivial or self-explanatory
  • It's a one-off task

Skill Structure

skills/{skill-name}/
├── SKILL.md              # Required - main skill file
├── assets/               # Optional - templates, schemas, examples
│   ├── template.py
│   └── schema.json
└── references/           # Optional - links to local docs
    └── docs.md           # Points to docs/developer-guide/*.mdx

SKILL.md Template

---
name: {skill-name}
description: >
  {What the skill does}. Use when {user intent, nearby cues, or task context}.
license: Apache-2.0
metadata:
  author: generic-author
  version: "1.0"
---

## When to Use

{Bullet points of when to use this skill}

## Critical Patterns

{The most important rules - what AI MUST know}

## Examples

{Minimal, focused examples or workflows}

## Resources

- **Templates**: See [assets/](assets/) for {description}
- **Documentation**: See [references/](references/) for local docs


Naming Conventions

Type Pattern Examples
Generic skill {technology} pytest, playwright, typescript
Repo-specific {repo}-{component} repo-api, repo-ui, repo-sdk-check
Testing skill test-{component} test-sdk, test-api
Workflow skill {action}-{target} skill-creator, jira-task

Read the full file on GitHub · 195 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 7d ago First seen · 195 lines · 38 tokens per session scan A b7d5c857793a

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository dallay/agents-skills (2 stars, last pushed 15d ago), licensed MIT. It adds 38 tokens to every session and 1,258 once invoked, about $0.0002 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 2026-08-31.

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