skill-creator

A guide for creating or updating skills that extend Claude with specialised knowledge, workflows, or tool integrations.

In plain words
What is it for?
Designing new skills and revising existing ones for coding-agent workflows.
Why use it?
It helps turn a repeated process or domain-specific method into a reusable skill instead of explaining it from scratch each time.

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/eli-labz/godcoder/skill-creator
Any agent
npx skills add eli-labz/Godcoder --skill skill-creator
Clone the repo
git clone --depth 1 https://github.com/eli-labz/Godcoder

Made for: Claude Code, Codex.

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,729 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.03729
Opus 5 $0.00023 $0.01865
Sonnet 5 $0.00009 $0.00746
Haiku 4.5 $0.00005 $0.00373

Measured 2d ago against content hash d57b6e3a4453, 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 2d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/init_skill.py, scripts/package_skill.py, scripts/quick_validate.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

third_party/open-cowork-main/.claude/skills/skill-creator/SKILL.md · 358 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

6 files 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. 2d ago First seen · 358 lines · 45 tokens per session scan A d57b6e3a4453

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository eli-labz/Godcoder (186 stars, last pushed 1mo ago), with no licence file. It adds 45 tokens to every session and 3,729 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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当用户想创建一个新技能时使用——用户描述想要的能力(说"帮我写个技能/创建一个 skill/生成 SKILL.md/做个 XX 技能"),本技能引导生成规范的 SKILL.md(name、description、正文指令)。若要交付成可上传插件包,可继续按「插件包标准化」规则补 plugin.json/图标、导出标准包,最后询问用户是否安装。.

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