AI Skill Development & Optimization

Standardize and optimize the creation of specialized AI capabilities using TDD-driven documentation practices.

Context cost
22.8k tokensestimated from the bundle, loaded when it triggers
Bundle
6 files · 96.8 kB1 script among them — read before you run
Licence
MITthe author’s own terms
Last change
—v1.0.0
Servers it uses
Noneruns standalone

What it does

当创建新技能、编辑现有技能或在部署前验证技能是否有效时使用

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

documentationtdd

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md25.6 kB · preview
--- name: writing-skills version: "1.0.0" license: MIT metadata: hermes: tags: [skills, documentation] ---
11# 编写技能
12
13## 概述
14
15**编写技能就是将测试驱动开发应用于流程文档。**
16
17**个人技能存放在你所用运行环境的技能目录中**(Claude Code 上是 ~/.claude/skills/)——其他运行环境的路径见 [codex-tools.md](../using-superpowers/references/codex-tools.md) 或 [gemini-tools.md](../using-superpowers/references/gemini-tools.md)。Codex、Copilot CLI 和 Gemini CLI 也都认 ~/.agents/skills/,作为跨运行环境的别名。
18
19你编写测试用例(带子智能体的压力场景),观察它们失败(基线行为),编写技能(文档),观察测试通过(智能体遵守规则),然后重构(堵住漏洞)。
20
21**核心原则:** 如果你没有观察到智能体在没有该技能时失败,你就不知道这个技能是否教了正确的东西。
22
23**必需背景:** 在使用此技能前,你必须理解 test-driven-development。该技能定义了基本的红-绿-重构循环。本技能将 TDD 适配到文档编写中。
24
25**官方指南:** Anthropic 官方的技能编写最佳实践请参见 anthropic-best-practices.md。该文档提供了补充本技能 TDD 导向方法的额外模式和指南。
26
27## 什么是技能?
28
29**技能**是经过验证的技术、模式或工具的参考指南。技能帮助未来的 Claude 实例找到并应用有效的方法。
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md1,411 words
Files6
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈40
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
22,760
on trigger
The instruction body and 5 supporting files, read only when the skill fires.
11.4%
of a 200k window
Ten skills this size would not fit in the window together.
050k100k150k200k context window

22.8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

6 files, 96.8 kB on disk. Mostly text — the instructions the model reads — with 1 script in it that your client would run only if the instructions tell it to. 1 file of its source is not in the download — listed after these, with why.

  • SKILL.md25.6 kB
  • anthropic-best-practices.md42.4 kB
  • persuasion-principles.md5.4 kB
  • render-graphs.js5.6 kB
  • testing-skills-with-subagents.md12.4 kB
  • examples/CLAUDE_MD_TESTING.md5.4 kB

Not in the download

Not carried is a type a skill download does not hold. Take it from its source.

  • graphviz-conventions.dotnot carried
What is not in it

A skill installs nothing and depends on nothing: it is a folder your client reads. This one carries 1 script beside the text, so the download is 6 files — not the whole of its source: 1 file is left out. It is listed under the files, with why. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# AI Skill Development & Optimization · 22.8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/ai-skill-development-optimization/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/ai-skill-development-optimization" ] && { [ ! -e .claude/skills/ai-skill-development-optimization ] || { mv .claude/skills/ai-skill-development-optimization "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/ai-skill-development-optimization" .claude/skills/ && echo "Installed .claude/skills/ai-skill-development-optimization"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add jnmetacode/ai-skill-development-optimization

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/ai-skill-development-optimization/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/ai-skill-development-optimization/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/ai-skill-development-optimization" ] && { [ ! -e ~/.claude/skills/ai-skill-development-optimization ] || { mv ~/.claude/skills/ai-skill-development-optimization "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/ai-skill-development-optimization" ~/.claude/skills/ && echo "Installed ~/.claude/skills/ai-skill-development-optimization" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/ai-skill-development-optimization/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as writing-skills in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, ai-skill-development-optimization. Not in this download: 1 file of its source (which one, and why). Take it from its source.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Version1.0.0
Publishedno release date on file
PriceFree
Referencejnmetacode/ai-skill-development-optimization

Versions

v1.0.0 is what is on the shelf; no release here carries a date. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

v1.0.0
  • No earlier releases have been published to the marketplace.
Pinning

The install command always fetches the release that is current the day you run it — v1.0.0 today — and cannot ask for an earlier one. The copy on your disk does not change until you run it again.

Reviews

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