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.
npx skills add ephemeraldew/skill_mcp --skill demo-skillgit clone --depth 1 https://github.com/ephemeraldew/skill_mcpWrote 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.
[](https://agentmods.dev/skills/ephemeraldew/skill_mcp/demo-skill)<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="Measured on agentmods" height="20"></a>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 | $0.00009 | $0.00186 |
| Sonnet 5 | $0.00003 | $0.00074 |
| Haiku 4.5 | $0.00002 | $0.00037 |
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 8d 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.
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
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.
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.
- 8d ago First seen · 69 lines · 17 tokens per session scan A 197671d04cce
demo-skill is a skill published in the GitHub repository ephemeraldew/skill_mcp (21 stars, last pushed 7mo ago), licensed MIT. It adds 17 tokens to every session and 372 once invoked, about $0.0001 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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