Agent skill

Powershell Expert

by aiskillstore in aiskillstore/marketplace

Develop PowerShell scripts, tools, modules, and GUIs following Microsoft best practices.

No licenceAuto-check passedDevelopment

Install Powershell Expert

skills CLI
$ npx skills add aiskillstore/marketplace --skill powershell-expert -a claude-code

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

GitHub CLI
$ gh skill install aiskillstore/marketplace powershell-expert --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/hmohamed01/powershell-expert .claude/skills/powershell-expert && 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
powershell-expert
GitHub stars
430
Token cost
~1.9k tokens
SKILL.md length
503 words
Files
6 (incl. scripts, references)
Skills in repo
1,085
Repo updated
First seen
Licence
None found

At a glance

Develop PowerShell scripts, tools, modules, and GUIs following Microsoft best practices.

  • Works in 6 steps: Script Development → GUI Development → PowerShell Gallery Integration → …
  • Writing PowerShell code
  • SKILL.md covers Quick Reference, Workflow, Key Patterns and Module Recommendations, plus 3 more sections
  • Runs PowerShell scripts from its folder; reaches powershellgallery.com

What it does

Powershell Expert is an agent skill from aiskillstore/marketplace. Develop PowerShell scripts, tools, modules, and GUIs following Microsoft best practices. Use when writing PowerShell code, creating Windows Forms/WPF interfaces, working with PowerShell Gallery modules, or needing cmdlet/module recommendations. Covers script development, parameter design, pipeline handling, error management, and GUI creation patterns. Verifies module availability and cmdlet syntax against live documentation when accuracy is critical.

Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts and reference files (for example `references/best-practices.md`, `references/gui-development.md` and `references/powershellget.md`).

It sits in Development, covering Shell scripting. It works with PowerShell. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Writing PowerShell code
  • Creating Windows Forms/WPF interfaces
  • Working with PowerShell Gallery modules
  • Needing cmdlet/module recommendations

Example prompts

  • “/powershell-expert”

Requirements

  • PowerShell

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Script Development
  2. GUI Development
  3. PowerShell Gallery Integration
  4. Verify Module on PowerShell Gallery
  5. Verify Cmdlet Syntax (When Needed)
  6. Fallback Strategies

What it can do on your machine

Read from SKILL.md and the folder at commit 4ac52da. 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

    Ships 1 file in scripts/ (PowerShell), which the agent can run.

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

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • powershellgallery.com

    Also links to:

    • learn.microsoft.com
    • github.com

    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

Powershell Expert loads about 1.9k tokens when it runs, and up to ~8.9k if it reads all its reference files. Until then it costs about 118 tokens; SKILL.md has 503 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~118
When it runs · the whole SKILL.md, loaded when a task matches
~1.9k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~8.9k

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); the scripts in this folder are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 503 words (~1,897 tokens).

“Develop production-quality PowerShell scripts, tools, and GUIs using Microsoft best practices and the PowerShell ecosystem.”

— opening of SKILL.md by aiskillstore
name
powershell-expert

Read the full SKILL.md on GitHub

Files

SKILL.md and 5 other files (scripts, references) in skills/hmohamed01/powershell-expert of aiskillstore/marketplace.

  • SKILL.md
  • references/best-practices.md
  • references/gui-development.md
  • references/powershellget.md
  • scripts/Search-Gallery.ps1
  • skill-report.json

Open the folder on GitHubat commit 4ac52da

Compare with similar skills

Powershell Expert 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.

Powershell Expert compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Powershell Expert this skillaiskillstore/marketplace430—~1.9kAutomated safety check: PassNone
Shell Toolingowent/libatbus234—~1.4kAutomated safety check: PassMIT
Write Script Powershellwindmill-labs/windmill18k—~2.1kAutomated safety check: PassCustom licence
Release Branchmono/SkiaSharp5.6k—~670Automated safety check: PassMIT
Powershellsillsdev/FieldWorks110—~1.2kAutomated safety check: PassCustom licence
Analyzing Powershell Script Block Loggingmukul975/Anthropic-Cybersecurity-Skills34k—~666Automated safety check: PassApache-2.0

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Works with

Categories

Questions about Powershell Expert

What does Powershell Expert do?

Develop PowerShell scripts, tools, modules, and GUIs following Microsoft best practices. Powershell Expert is an agent skill from aiskillstore/marketplace. Develop PowerShell scripts, tools, modules, and GUIs following Microsoft best practices.

When should I use Powershell Expert?

Powershell Expert fits situations like: writing PowerShell code; creating Windows Forms/WPF interfaces; working with PowerShell Gallery modules; needing cmdlet/module recommendations.

How do I install Powershell Expert in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill powershell-expert -a claude-code`. Or copy the skill folder (skills/hmohamed01/powershell-expert in aiskillstore/marketplace) into .claude/skills/powershell-expert in your project. Claude Code loads it when a task matches its description.

How do I install Powershell Expert in Codex?

Run `npx skills add aiskillstore/marketplace --skill powershell-expert -a codex`. Or copy the skill folder (skills/hmohamed01/powershell-expert in aiskillstore/marketplace) into .agents/skills/powershell-expert in your project. Codex loads it when a task matches its description.

Can I use Powershell Expert 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 aiskillstore/marketplace --skill powershell-expert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/powershell-expert, .gemini/skills/powershell-expert, .github/skills/powershell-expert and .opencode/skills/powershell-expert in your project.

What does Powershell Expert need to run?

Going by SKILL.md and its folder, Powershell Expert needs PowerShell for the scripts in its folder. Our summary lists: PowerShell.

Does Powershell Expert access the network?

SKILL.md names 3 domains. In commands or code: powershellgallery.com; the agent is likely to contact it when it follows the instructions. As links in the text: learn.microsoft.com and github.com. This is read from the text; nothing was executed.

Is Powershell Expert 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Powershell Expert use?

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

How many tokens does Powershell Expert use?

About 1.9k tokens (SKILL.md is roughly 7.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7k tokens, read only when the agent opens those files.

What are the alternatives to Powershell Expert?

Skills that share tags, products or a category with Powershell Expert: Shell Tooling (owent/libatbus, 234 stars), Write Script Powershell (windmill-labs/windmill, 18k stars), Release Branch (mono/SkiaSharp, 5.6k stars) and Powershell (sillsdev/FieldWorks, 110 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Powershell Expert?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.