Is the PowerShell Safe Invocation skill free?

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

What is the PowerShell Safe Invocation SkillProof Score?

9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 4/5.

How do I install PowerShell Safe Invocation?

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 PowerShell Safe Invocation 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.

PowerShell Safe Invocation

Stops PowerShell scripts from breaking on quoted paths, Invoke-Expression, and Start-Process quirks.

by Misaka-Mikoto-Tech · Misaka-Mikoto-Tech/agent-skills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.2/10
Tested: Jul 13, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 17f98fc

⚠ The author changed this skill after we tested it. The verdict below describes the version we ran on Jul 13, 2026; it's queued for a re-test.

Asked for a PowerShell wrapper around a converter.exe with a spaced/bracketed path: baseline defaulted to string-building + Invoke-Expression (exactly what the skill calls out as forbidden), the skill version used array splatting with & and explicit $LASTEXITCODE capture — a real quoting-bug class avoided.

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 9/10
Docs & honesty 4/5

What PowerShell Safe Invocation does

Covers safe invocation patterns for PowerShell on Windows: array-based argument passing instead of string-building, hashtable splatting with -LiteralPath, when to use Start-Process vs ProcessStartInfo, and version differences between PowerShell 5.1 and 7. Triggers when writing or debugging PowerShell that calls native programs, handles quoted/special-character paths, or needs shell troubleshooting.

How to install PowerShell Safe Invocation

git clone https://github.com/Misaka-Mikoto-Tech/agent-skills
cd agent-skills
mkdir -p ~/.claude/skills
cp -r skills/powershell-safe-invocation ~/.claude/skills/powershell-safe-invocation

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger PowerShell Safe Invocation

/powershell-safe-invocation Stops PowerShell scripts from breaking on quoted paths, Invoke-Expression, and Start-Process quirks.

It also activates on plain-language prompts like these:

Write a PowerShell script that calls an exe with a spaced file path
My Start-Process -ArgumentList call isn't passing arguments correctly
Help me safely invoke a native program from PowerShell without quoting bugs

Frequently asked questions

Is the PowerShell Safe Invocation skill free?: Yes. The skill itself is free from Misaka-Mikoto-Tech/agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does PowerShell Safe Invocation work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 13, 2026. Verdict: Tested · Works. Asked for a PowerShell wrapper around a converter.exe with a spaced/bracketed path: baseline defaulted to string-building + Invoke-Expression (exactly what the skill calls out as forbidden), the skill version used array splatting with & and explicit $LASTEXITCODE capture — a real quoting-bug class avoided.
What is the PowerShell Safe Invocation SkillProof Score?: 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 4/5.
How do I install PowerShell Safe Invocation?: 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 PowerShell Safe Invocation 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.