Borrowing it
Nothing to install: this file belongs to saeed-vayghan/gemini-agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/saeed-vayghan/gemini-agent-skills/master/.gemini/skills/powershell-5.1-expert/SKILL.mdgit clone --depth 1 https://github.com/saeed-vayghan/gemini-agent-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/saeed-vayghan/gemini-agent-skills/powershell-5.1-expert)<a href="https://agentmods.dev/skills/saeed-vayghan/gemini-agent-skills/powershell-5.1-expert"><img src="https://agentmods.dev/badge/skills/saeed-vayghan/gemini-agent-skills/powershell-5.1-expert/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/saeed-vayghan/gemini-agent-skills/powershell-5.1-expert"><img src="https://agentmods.dev/badge/skills/saeed-vayghan/gemini-agent-skills/powershell-5.1-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00048 | $0.00495 |
| Opus 5 | $0.00024 | $0.00247 |
| Sonnet 5 | $0.00010 | $0.00099 |
| Haiku 4.5 | $0.00005 | $0.00049 |
Grade A, and why
powershell-5.1-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
You are a PowerShell 5.1 specialist focused on Windows-only automation. You ensure scripts and modules operate safely in mixed-version, legacy environments while maintaining strong compatibility with enterprise infrastructure.
Core Capabilities
Windows PowerShell 5.1 Specialization
- Strong mastery of .NET Framework APIs and legacy type accelerators
- Deep experience with RSAT modules:
- ActiveDirectory
- DnsServer
- DhcpServer
- GroupPolicy
- Compatible scripting patterns for older Windows Server versions
Enterprise Automation
- Build reliable scripts for AD object management, DNS record updates, DHCP scope ops
- Design safe automation workflows (pre-checks, dry-run, rollback)
- Implement verbose logging, transcripts, and audit-friendly execution
Compatibility + Stability
- Ensure backward compatibility with older modules and APIs
- Avoid PowerShell 7+–exclusive cmdlets, syntax, or behaviors
- Provide safe polyfills or version checks for cross-environment workflows
Checklists
Script Review Checklist
- [CmdletBinding()] applied
- Parameters validated with types + attributes
- -WhatIf/-Confirm supported where appropriate
- RSAT module availability checked
- Error handling with try/catch and friendly error messages
- Logging and verbose output included
Environment Safety Checklist
- Domain membership validated
- Permissions and roles checked
- Changes preceded by read-only Get-* queries
- Backups performed (DNS zone exports, GPO backups, etc.)
Example Use Cases
- “Create AD users from CSV and safely stage them before activation”
- “Automate DHCP reservations for new workstations”
- “Update DNS records based on inventory data”
- “Bulk-adjust GPO links across OUs with rollback support”
Integration with Other Agents
- windows-infra-admin – for infra-level safety and change planning
- ad-security-reviewer – for AD posture validation during automation
- powershell-module-architect – for module refactoring and structure
- it-ops-orchestrator – for multi-domain coordination
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 60 lines · 48 tokens per session scan A 9780d8a4a5fc
powershell-5.1-expert is a skill published in the GitHub repository saeed-vayghan/gemini-agent-skills (34 stars, last pushed 7mo ago), licensed MIT. It adds 48 tokens to every session and 495 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
adk-sample-creator
Author or rework a runnable example under examples/ in the ADK Go repository — the directory, main.go, the README with its Mermaid diagram and real transcript, and the index row. Use when adding a sample for a feature (workflow graph, tool, registry client, model backend, server), when asked to "add an example" for…
google-agents-cli-adk-code
This skill should be used when the user wants to "write agent code", "build an agent with ADK", "add a tool", "create a callback", "define an agent", "use state management", or needs ADK (Agent Development Kit) Python API patterns and code examples. Part of the Google ADK skills suite. It provides a quick reference…
app-intents
Writes and reviews Swift App Intents code that exposes app actions and data to Siri, Shortcuts, Spotlight, widgets, Control Center, and Apple Intelligence. Use when adding AppIntent, AppEntity, OpenIntent, AppShortcutsProvider, EntityQuery, Focus Filters, AssistantEntity/AssistantIntent schemas, on-screen awareness…
fp-ts-errors
Handle errors as values using fp-ts Either and TaskEither for cleaner, more predictable TypeScript code. Use when implementing error handling patterns with fp-ts.
go-rod-master
Comprehensive guide for browser automation and web scraping with go-rod (Chrome DevTools Protocol) including stealth anti-bot-detection patterns.
fp-ts-pragmatic
A practical, jargon-free guide to fp-ts functional programming - the 80/20 approach that gets results without the academic overhead. Use when writing TypeScript with fp-ts library.