Is the Skill Creator Advanced skill free?

Yes. The skill itself is free from kevintsengtw/dotnet-testing-agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Skill Creator Advanced SkillProof Score?

8.0/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 3/5.

How do I install Skill Creator Advanced?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Skill Creator Advanced with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Skill Creator Advanced

Build, lint, eval and package Claude skills with bundled Python tooling

by kevintsengtw · kevintsengtw/dotnet-testing-agent-skills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.0/10
Tested: Aug 5, 2026
Environment: Claude Code 2.x (agent harness)

⚠ This skill is no longer available upstream. Our re-check on Aug 10, 2026 couldn't find it any more (repo unreachable/deleted). The test below is what we measured on Aug 5, 2026 and we're leaving it up as a record — but there is nothing left to install, so we've removed the command.

Ran the whole bundled pipeline against a hand-written baseline skill: format_check and quick_validate caught the two defects that would have stopped it loading at all (a non-kebab-case name and a folder/frontmatter mismatch), generate_test_plan produced a 177-line plan with 19 checkboxes, and package_skill emitted a working .skill archive. The quick-start's own first command, init_skill_advanced.py, crashes with ModuleNotFoundError: No module named 'scripts.versioning' — that module exists nowhere in the repo — though the older init_skill.py scaffolds a complete folder fine. format_check --fix prints "(fixed)" and leaves the file byte-identical, and its trigger-language check can never fire on an English description because all four English regexes are double-escaped, so a description literally reading "Use when user asks to convert CSV" is still warned as missing trigger language. All 11 reference documents it advertises exist and are substantial, 46 to 297 lines each. Everything user-facing is Traditional Chinese only.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 3/5

What Skill Creator Advanced does

A full authoring lifecycle for Claude Code skills: scaffold a folder, lint the frontmatter and structure, generate a trigger/functional test plan, run with-skill vs baseline evals, check regression gates, and package a .skill archive. Triggers when you are creating a new skill, rewriting a description that under- or over-fires, benchmarking a skill against no-skill, or preparing one for distribution. Ships 15 Python scripts and 11 reference documents; SKILL.md and docs are Traditional Chinese.

How to install Skill Creator Advanced

Nothing to install: the source repository no longer has this skill. If the author brings it back, our daily re-check will pick it up and the command will reappear here.

Commands — how to trigger Skill Creator Advanced

/skill-creator-advanced Build, lint, eval and package Claude skills with bundled Python tooling

It also activates on plain-language prompts like these:

幫我建立一個可以自動處理發票 PDF 並匯出成 Excel 的全新 Claude skill
幫我測試看看這個 skill 的 description 寫法到底會不會過度觸發或漏觸發
把這個寫好的 skill 資料夾檢查一遍，打包成 .skill 檔案準備拿去發佈

Frequently asked questions

Is the Skill Creator Advanced skill free?: Yes. The skill itself is free from kevintsengtw/dotnet-testing-agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Skill Creator Advanced work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Aug 5, 2026. Verdict: Tested · Works. Ran the whole bundled pipeline against a hand-written baseline skill: format_check and quick_validate caught the two defects that would have stopped it loading at all (a non-kebab-case name and a folder/frontmatter mismatch), generate_test_plan produced a 177-line plan with 19 checkboxes, and package_skill emitted a working .skill archive. The quick-start's own first command, init_skill_advanced.py, crashes with ModuleNotFoundError: No module named 'scripts.versioning' — that module exists nowhere in the repo — though the older init_skill.py scaffolds a complete folder fine. format_check --fix prints "(fixed)" and leaves the file byte-identical, and its trigger-language check can never fire on an English description because all four English regexes are double-escaped, so a description literally reading "Use when user asks to convert CSV" is still warned as missing trigger language. All 11 reference documents it advertises exist and are substantial, 46 to 297 lines each. Everything user-facing is Traditional Chinese only.
What is the Skill Creator Advanced SkillProof Score?: 8.0/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 3/5.
How do I install Skill Creator Advanced?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Skill Creator Advanced with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.