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Agent skill

Powershell

by sillsdev in sillsdev/FieldWorks

PowerShell best practices for scripts used in FieldWorks (dev scripts & CI helpers).

Custom licenceAuto-check passedDevelopment

Install Powershell

skills CLI
$ npx skills add sillsdev/FieldWorks --skill powershell -a claude-code

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

GitHub CLI
$ gh skill install sillsdev/FieldWorks powershell --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/sillsdev/FieldWorks.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/powershell .claude/skills/powershell && 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
GitHub stars
110
Token cost
~1.2k tokens
SKILL.md length
443 words
Files
1
Skills in repo
29
Repo updated
First seen
Licence
Custom licence

At a glance

PowerShell best practices for scripts used in FieldWorks (dev scripts & CI helpers).

  • Modifying PowerShell scripts in scripts/
  • SKILL.md covers Style and Linting, Traps that produce a wrong…, Security and Testing and Execution, plus 2 more sections
  • Calls git and pwsh
  • Tasks that involve Shell scripting

What it does

Powershell is an agent skill from sillsdev/FieldWorks. PowerShell best practices for scripts used in FieldWorks (dev scripts & CI helpers). Use when writing or modifying PowerShell scripts in scripts/ or Build/Agent/.

Its SKILL.md is about 1.2k 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 Development, covering Shell scripting. It works with PowerShell. The repository describes itself as: FieldWorks is a suite of software tools for language and cultural data, with support for complex scripts.

When your agent uses it

  • Modifying PowerShell scripts in scripts/
  • Tasks that involve Shell scripting

Example prompts

  • “/powershell”

Requirements

  • Pre-approved tools (allowed-tools): Read, PowerShell

What it can do on your machine

Read from SKILL.md and the folder at commit 44b1d04. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • PowerShell

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • git
    • pwsh

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

  • Network

    No URLs in SKILL.md. Its commands use git, 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

Powershell loads about 1.2k tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 443 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~43
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 443 words (~1,227 tokens).

“Conventions and safety patterns for PowerShell scripts in scripts/ and CI.”

— opening of SKILL.md by sillsdev, Custom licence
name
powershell
allowed-tools
Read, PowerShell
version
1.0.0

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/powershell of sillsdev/FieldWorks.

Open the folder on GitHubat commit 44b1d04

Compare with similar skills

Powershell 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 compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Powershell this skillsillsdev/FieldWorks110—~1.2kAutomated safety check: PassCustom licence
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
Analyzing Powershell Script Block Loggingmukul975/Anthropic-Cybersecurity-Skills34k—~666Automated safety check: PassApache-2.0
Powershell Expertaiskillstore/marketplace430—~1.9kAutomated safety check: PassNone

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Works with

Categories

Questions about Powershell

What does Powershell do?

PowerShell best practices for scripts used in FieldWorks (dev scripts & CI helpers). Powershell is an agent skill from sillsdev/FieldWorks. PowerShell best practices for scripts used in FieldWorks (dev scripts & CI helpers).

When should I use Powershell?

Powershell fits situations like: modifying PowerShell scripts in scripts/; tasks that involve Shell scripting.

How do I install Powershell in Claude Code?

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

How do I install Powershell in Codex?

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

Can I use Powershell 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 sillsdev/FieldWorks --skill powershell -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, .gemini/skills/powershell, .github/skills/powershell and .opencode/skills/powershell in your project.

What does Powershell need to run?

Going by SKILL.md and its folder, Powershell needs the command-line tools its instructions call (git and pwsh). Its frontmatter pre-approves these tools: Read, PowerShell.

Does Powershell access the network?

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

Is Powershell 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 Powershell use?

Powershell has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Powershell use?

About 1.2k tokens (SKILL.md is roughly 4.9k 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 Powershell?

Skills that share tags, products or a category with Powershell: Shell Tooling (owent/libatbus, 234 stars), Write Script Powershell (windmill-labs/windmill, 18k stars), Release Branch (mono/SkiaSharp, 5.6k stars) and Analyzing Powershell Script Block Logging (mukul975/Anthropic-Cybersecurity-Skills, 34k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Powershell?

sillsdev (a GitHub organization) maintains it in sillsdev/FieldWorks, which has 110 GitHub stars. The repository holds 29 skills in this directory. The repository was last updated on October 7, 2026.

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