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Agent skill

Validate

by juliepy in juliepy/AI-Engineer-from-scrach

Run the full quality gate (ruff + mypy + pytest + tsc + vitest) and report PASS/FAIL for each command.

No licenceAuto-check passedTesting & QA

Install Validate

skills CLI
$ npx skills add juliepy/AI-Engineer-from-scrach --skill validate -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install juliepy/AI-Engineer-from-scrach validate --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/juliepy/AI-Engineer-from-scrach.git skills-src && mkdir -p .claude/skills && cp -r skills-src/06-harnes/harness-engineering-demo/.claude/skills/validate .claude/skills/validate && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
validate
GitHub stars
433
Token cost
~500 tokens
SKILL.md length
146 words
Files
1
Skills in repo
15
Repo updated
First seen
Licence
None found

At a glance

Run the full quality gate (ruff + mypy + pytest + tsc + vitest) and report PASS/FAIL for each command.

  • Tasks that involve Unit testing
  • SKILL.md covers Gate Commands, Report Format and Notes
  • Calls uv, npx and npm
  • Tasks that involve Type safety

What it does

Validate is an agent skill from juliepy/AI-Engineer-from-scrach. Run the full quality gate (ruff + mypy + pytest + tsc + vitest) and report PASS/FAIL for each command. Run before any commit or PR.

Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Unit testing, Type safety and Quality gates. It works with pytest, Ruff and Vitest.

When your agent uses it

  • Tasks that involve Unit testing
  • Tasks that involve Type safety
  • Tasks that involve Quality gates

Example prompts

  • “/validate”

Requirements

  • Node.js

What it can do on your machine

Read from SKILL.md and the folder at commit d9e02cb. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • uv
    • npx
    • npm
    • ruff
    • mypy
    • pytest
    • tsc
    • vitest

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use uv, npx and npm, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Validate loads about 500 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 146 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~35
When it runs · the whole SKILL.md, loaded when a task matches
~500

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 146 words (~500 tokens).

“Run the complete quality gate and report PASS/FAIL for each command.”

— opening of SKILL.md by juliepy
name
validate
disable-model-invocation
true

Read the full SKILL.md on GitHub

Files

Just SKILL.md in 06-harnes/harness-engineering-demo/.claude/skills/validate of juliepy/AI-Engineer-from-scrach.

Open the folder on GitHubat commit d9e02cb

Compare with similar skills

Validate next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Validate compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Validate this skilljuliepy/AI-Engineer-from-scrach433—~500Automated safety check: PassNone
Checkav1155/houndarr292—~366Automated safety check: PassAGPL-3.0
Run Testsartcc/freelingo160—~976Automated safety check: PassAGPL-3.0
Gateguardana/guardana129—~776Automated safety check: PassApache-2.0
Kedro Babysitkedro-org/kedro11k—~4kAutomated safety check: PassCustom licence
Modern Pythonantoinebou12/uml-mcp105—~1kAutomated safety check: PassMIT

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More from juliepy/AI-Engineer-from-scrach

All 15 skills in this repo

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  • PR Worktree

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  • Implement

    juliepy/AI-Engineer-from-scrach

    Read a plan file, execute every task in dependency order with per-task validation, then write an implementation report to reports/<feature-slug-implementation-report.md.

    433 GitHub stars~638 tokensUpdated 1 mo ago
    Auto-check passed

  • Plan

    juliepy/AI-Engineer-from-scrach

    Analyze a ticket or feature description, read the codebase, identify risks, and write a context-rich implementation plan to plans/<feature-slug-plan.md.

    433 GitHub stars~746 tokensUpdated 1 mo ago
    Auto-check passed

  • Implement

    juliepy/AI-Engineer-from-scrach

    读取计划文件，按依赖顺序执行每个任务并做任务级验证，最后写实现报告到 reports/<feature-implementation-report.md。

    433 GitHub stars~295 tokensUpdated 1 mo ago
    Auto-check passed

Works with

Categories

Questions about Validate

What does Validate do?

Run the full quality gate (ruff + mypy + pytest + tsc + vitest) and report PASS/FAIL for each command. Validate is an agent skill from juliepy/AI-Engineer-from-scrach. Run the full quality gate (ruff + mypy + pytest + tsc + vitest) and report PASS/FAIL for each command.

When should I use Validate?

Validate fits situations like: tasks that involve Unit testing; tasks that involve Type safety; tasks that involve Quality gates.

How do I install Validate in Claude Code?

Run `npx skills add juliepy/AI-Engineer-from-scrach --skill validate -a claude-code`. Or copy the skill folder (06-harnes/harness-engineering-demo/.claude/skills/validate in juliepy/AI-Engineer-from-scrach) into .claude/skills/validate in your project. Claude Code loads it when a task matches its description.

How do I install Validate in Codex?

Run `npx skills add juliepy/AI-Engineer-from-scrach --skill validate -a codex`. Or copy the skill folder (06-harnes/harness-engineering-demo/.claude/skills/validate in juliepy/AI-Engineer-from-scrach) into .agents/skills/validate in your project. Codex loads it when a task matches its description.

Can I use Validate in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add juliepy/AI-Engineer-from-scrach --skill validate -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/validate, .gemini/skills/validate, .github/skills/validate and .opencode/skills/validate in your project.

What does Validate need to run?

Going by SKILL.md and its folder, Validate needs the command-line tools its instructions call (uv, npx, npm, ruff, mypy and pytest). Our summary lists: Node.js.

Does Validate access the network?

SKILL.md contains no URLs. Its commands use uv, npx and npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Validate safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Validate use?

No licence was found for Validate or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Validate use?

About 500 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Validate?

Skills that share tags, products or a category with Validate: Check (av1155/houndarr, 292 stars), Run Tests (artcc/freelingo, 160 stars), Gate (guardana/guardana, 129 stars) and Kedro Babysit (kedro-org/kedro, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Validate?

juliepy (a GitHub user) maintains it in juliepy/AI-Engineer-from-scrach, which has 433 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on September 6, 2026.

Source: juliepy/AI-Engineer-from-scrach on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.