skill-creator

skill-creator is a skill for Claude Code, Codex from floomhq/moto. It costs 45 tokens per session (950 once invoked), scanned A, original, MIT.

A guide for creating skills, which are instruction packages that give a coding agent specialized knowledge, workflows, or tool instructions.

In plain words
What is it for?
Use it when creating or updating a skill, including its instructions, examples, tool connections, and bundled files.
Why use it?
It helps turn repeated domain work into clear, reusable instructions instead of relying on ad hoc prompts.

Skill for Claude CodeCodex

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/floomhq/moto/skill-creator
Any agent
npx skills add floomhq/moto --skill skill-creator
Clone the repo
git clone --depth 1 https://github.com/floomhq/moto

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/floomhq/moto/skill-creator.svg)](https://agentmods.dev/skills/floomhq/moto/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/floomhq/moto/skill-creator"><img src="https://agentmods.dev/badge/skills/floomhq/moto/skill-creator.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 950 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 $0.00045 $0.00950
Opus 5 $0.00023 $0.00475
Sonnet 5 $0.00009 $0.00190
Haiku 4.5 $0.00005 $0.00095

Measured 5d ago against content hash 91c2567ff2ec, 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.

claude/skills/skill-creator/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 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 Claude's capabilities by providing specialized knowledge, workflows, and tools. Think of them as "onboarding guides" for specific domains or tasks - they transform Claude from a general-purpose agent into a specialized agent equipped with procedural knowledge.

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

Core Principles

Concise is Key

The context window is a public good. Only add context Claude doesn't already have. Challenge each piece of information: "Does Claude really need this explanation?"

Prefer concise examples over verbose explanations.

Anatomy of a Skill

skill-name/
├── SKILL.md (required)
│   ├── YAML frontmatter metadata (required)
│   │   ├── name: (required)
│   │   └── description: (required)
│   └── Markdown instructions (required)
└── Bundled Resources (optional)
    ├── scripts/          - Executable code (Python/Bash/etc.)
    ├── references/       - Documentation loaded into context as needed
    └── assets/           - Files used in output (templates, icons, fonts)
SKILL.md (required)
  • Frontmatter (YAML): Contains name and description fields (required). The description is the primary triggering mechanism - be clear and comprehensive about what the skill is and when to use it.
  • Body (Markdown): Instructions loaded AFTER the skill triggers.
Bundled Resources (optional)

Scripts (scripts/): Executable code for tasks that require deterministic reliability or are repeatedly rewritten. Token efficient, deterministic.

References (references/): Documentation intended to be loaded as needed into context. Use for database schemas, API documentation, domain knowledge, company policies, detailed workflow guides.

Read the full file on GitHub · 111 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 · 111 lines · 45 tokens per session scan A 91c2567ff2ec

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository floomhq/moto (32 stars, last pushed 2mo ago), licensed MIT. It adds 45 tokens to every session and 950 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 2026-08-30.

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