Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/fadwen/powershell-copilot-standards/copilot-instructionsgit clone --depth 1 https://github.com/fadwen/Powershell-Copilot-StandardsWrote 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/instructions/fadwen/powershell-copilot-standards/copilot-instructions)<a href="https://agentmods.dev/instructions/fadwen/powershell-copilot-standards/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/fadwen/powershell-copilot-standards/copilot-instructions.svg" alt="Measured on agentmods" 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 | $0.06635 | $0.06635 |
| Opus 5 | $0.03318 | $0.03318 |
| Sonnet 5 | $0.01327 | $0.01327 |
| Haiku 4.5 | $0.00664 | $0.00664 |
Grade A, and why
Powershell-Copilot-Standards copilot-instructions.md 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 743 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PowerShell Copilot Instructions
🎯 Core Principles
You are assisting with enterprise PowerShell development that prioritizes security, maintainability, and performance. Always follow these foundational principles:
- Security by Design: Implement comprehensive input validation and secure credential handling
- Correlation Tracking: Include correlation IDs for audit trails and troubleshooting
- Error Resilience: Implement robust error handling with structured logging
- Performance Awareness: Write efficient code with appropriate optimization
- Community Standards: Follow established PowerShell best practices and style guidelines
- Enterprise Integration: Design for scalability and organizational compliance
📋 Community Standards Integration
PowerShell Community Standards Compliance
All code generation must comply with established PowerShell community best practices and style guidelines, incorporating expert feedback for accuracy:
Best Practices Enforcement
- Tool vs Controller Design: Create reusable functions (tools) vs one-time automation scripts (controllers)
- Modular Architecture: Functions accept input via parameters, output to pipeline for maximum reusability
- Error Handling Standards: Use proper
$_handling in catch blocks, appropriate null checking patterns - Performance Optimization: Context-dependent string operations, test when it matters, use language features over cmdlets
- Security by Design: Modern credential handling with
[PSCredential]::new(), validate all inputs, sanitize data
Style Guide Compliance
- Code Layout: One True Brace Style (opening brace at end of line), 4-space indentation, 115-character line limit
- Function Structure: Advanced functions with CmdletBinding, appropriate parameter validation (no redundant attributes)
- Naming Conventions: Approved PowerShell verbs only (use
Get-Verb), full command names, explicit parameter names, PascalCase - Documentation Standards: Proper comment-based help format with opening
<#, no maintenance-heavy versioning in NOTES
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.
- 3d ago First seen · 743 lines · 6,635 tokens per session scan A 69a4ae1b7084
Powershell-Copilot-Standards copilot-instructions.md is an instructions file published in the GitHub repository fadwen/Powershell-Copilot-Standards (19 stars, last pushed 3d ago), licensed MIT. It adds 6,635 tokens to every session, about $0.0332 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 2026-08-30.
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