A demonstration skill that creates test files and packages them into a ZIP archive. It is intended to show how a skill can run scripts and pass options to them.

Creating a chosen number of test files, selecting an output folder, naming the ZIP file, and checking the resulting file count and location.

Testing a skill often requires repeatable sample files and a predictable archive. This provides a small workflow for creating those test inputs and bundling them.

demo-skill — Skill for Claude Code and Codex by ephemeraldew/skill

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 ephemeraldew/skill_mcp --skill demo-skill

Clone the repo

git clone --depth 1 https://github.com/ephemeraldew/skill_mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ephemeraldew/skill_mcp/demo-skill/github.svg)](https://agentmods.dev/skills/ephemeraldew/skill_mcp/demo-skill)

Your own site

<a href="https://agentmods.dev/skills/ephemeraldew/skill_mcp/demo-skill"><img src="https://agentmods.dev/badge/skills/ephemeraldew/skill_mcp/demo-skill/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ephemeraldew/skill_mcp/demo-skill"><img src="https://agentmods.dev/badge/skills/ephemeraldew/skill_mcp/demo-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 372 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.

Model	Per session	Once invoked
Fable 5.1	$0.00017	$0.00372
Opus 5.5	$0.00007	$0.00149
Sonnet 5.5	$0.00003	$0.00074
Haiku 4.5	$0.00002	$0.00037

Measured 2mo ago against content hash 197671d04cce, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

demo-skill 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 2mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/file_zip.py, scripts/init_create.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.

examples/skills/demo-skill/SKILL.md · 69 lines

What it actually says

Demo Skill - 文件生成与打包工具

概述

本skill提供文件生成和zip打包功能，主要用于测试skill的脚本调用能力。

适用场景

测试skill的多脚本调用能力
验证skill的参数传递功能
需要快速生成测试文件的场景

核心工作流程

第1步：收集用户需求

询问用户：

需要生成多少个文件？（默认3个）
输出目录名称？（默认 output）
zip文件名称？（默认自动生成）

第2步：生成测试文件

调用 scripts/init_create.py 创建文件：

# 基本用法
python scripts/init_create.py

# 指定文件数量
python scripts/init_create.py 5

# 指定文件数量和输出目录
python scripts/init_create.py 5 my_output

第3步：打包成zip

调用 scripts/file_zip.py 进行打包：

# 基本用法（打包output目录）
python scripts/file_zip.py

# 指定源目录
python scripts/file_zip.py my_output

# 指定源目录和zip文件名
python scripts/file_zip.py my_output result.zip

第4步：完成提示

告知用户：

文件创建位置
zip包的名称和大小
包含的文件数量

参考资料

详细用法请参考：

reference/usage_examples.md - 使用示例
reference/api_reference.md - API参考文档

Files

What ships with it

4 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.

2mo ago First seen · 69 lines · 17 tokens per session scan A 197671d04cce

Subscribe to this mod's changes

demo-skill is a skill published in the GitHub repository ephemeraldew/skill_mcp (21 stars, last pushed 9mo ago), licensed MIT. It adds 17 tokens to every session and 372 once invoked, about $0.0001 per session on Opus 5.5. 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.

demo-skill next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
demo-skillephemeraldew/skill_mcp	Skill	21	9mo ago	MIT	A	17	Claude Code, Codex
imagegenopenai/codex	Skill	135k	today	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	100k	today	Apache-2.0	A	19	Claude Code
browser-automationopenclaw/openclaw	Skill	394k	today	MIT	A	36	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	80k	6d ago	MIT	A	200	Claude Code, Codex
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
chat-pet-sprite-creationmicrosoft/vscode	Skill	195k	today	MIT	A	53	Claude Code, Codex