skill-creator

skill-creator is a skill for Claude Code, Codex from jnotsknab/mux-swarm. It costs 66 tokens per session (1,214 once invoked), scanned A, original, GPL-3.0.

Guidance for creating, updating, and packaging coding-agent skills. A skill is a reusable set of instructions for handling a particular kind of task.

In plain words
What is it for?
Use it to make a new skill, improve an existing one, or package a skill for distribution.
Why use it?
It provides a defined process for turning task-specific know-how into a skill that can be maintained and shared.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to make a new skill, improve an existing one, or package a skill for distribution.

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

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/jnotsknab/mux-swarm/skill-creator/github.svg)](https://agentmods.dev/skills/jnotsknab/mux-swarm/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/jnotsknab/mux-swarm/skill-creator"><img src="https://agentmods.dev/badge/skills/jnotsknab/mux-swarm/skill-creator/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/jnotsknab/mux-swarm/skill-creator"><img src="https://agentmods.dev/badge/skills/jnotsknab/mux-swarm/skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,214 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 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 5.1 $0.00066 $0.01214
Opus 5 $0.00033 $0.00607
Sonnet 5 $0.00013 $0.00243
Haiku 4.5 $0.00007 $0.00121

Measured 10d ago against content hash 55b1f6687290, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, 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 10d 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.

Skills/bundled-docker/skill-creator/SKILL.md · 133 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

5 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. 10d ago First seen · 133 lines · 66 tokens per session scan A 55b1f6687290

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository jnotsknab/mux-swarm (7 stars, last pushed 6d ago), licensed GPL-3.0. It adds 66 tokens to every session and 1,214 once invoked, about $0.0003 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.

Related

Other skills, from other repositories

proactive-agent

Transform AI agents from task-followers into proactive partners that anticipate needs and continuously improve. Now with WAL Protocol, Working Buffer, Autonomous Crons, and battle-tested patterns. Part of the Hal Stack 🦞.

MerkyorLynn/Lynn · 46 tokens

novel-workshop

A workspace for writing novels with an AI assistant, covering outlines, characters, chapters, multiple viewpoints, editing, and book assembly. It treats the author’s files and instructions as the source of truth.

MerkyorLynn/Lynn · 90 tokens

agent-personality

3-layer personality system for AI agents: Yuan (base persona), Ishiki (private self-awareness), Public Ishiki (external behavior rules). Give your agent a consistent character, emotional depth, and safe guest interaction boundaries. Use when: (1) Want agent to have a consistent personality, (2) Agent needs different…

MerkyorLynn/Lynn · 114 tokens

image-lightbox

Click-to-zoom lightbox for chat images, screenshots, and generated visuals. Scroll-wheel zoom (0.5x–5x), drag-to-pan, pinch gesture on mobile, keyboard shortcuts. Zero dependencies — pure CSS + vanilla JS. Use when: (1) Chat contains images the user wants to inspect, (2) Browser screenshots need closer examination…

MerkyorLynn/Lynn · 108 tokens

memory-recall

Persistent cross-session memory system with fact extraction, semantic search, and compiled memory layers. Your agent remembers everything across sessions — user preferences, project context, past decisions, personal details. Use when: (1) User references something from a previous conversation, (2) Agent needs project…

MerkyorLynn/Lynn · 104 tokens

stock-analysis

Analyze stocks and cryptocurrencies using Yahoo Finance data. Supports portfolio management, watchlists with alerts, dividend analysis, 8-dimension stock scoring, viral trend detection (Hot Scanner), and rumor/early signal detection. Use for stock analysis, portfolio tracking, earnings reactions, crypto monitoring…

MerkyorLynn/Lynn · 70 tokens