Borrowing it
Nothing to install: this file belongs to fadwen/Powershell-Copilot-Standards. 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/fadwen/Powershell-Copilot-Standards/main/.github/instructions/powershell-version.instructions.mdgit 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/powershell-version)<a href="https://agentmods.dev/instructions/fadwen/powershell-copilot-standards/powershell-version"><img src="https://agentmods.dev/badge/instructions/fadwen/powershell-copilot-standards/powershell-version/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/instructions/fadwen/powershell-copilot-standards/powershell-version"><img src="https://agentmods.dev/badge/instructions/fadwen/powershell-copilot-standards/powershell-version.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 | $0.02728 | $0.02728 |
| Opus 5.5 | $0.01091 | $0.01091 |
| Sonnet 5.5 | $0.00546 | $0.00546 |
| Haiku 4.5 | $0.00273 | $0.00273 |
Grade A, and why
Powershell-Copilot-Standards powershell-version.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 1mo 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 — 243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PowerShell Version Baseline
Which PowerShell version to target, and which features are safe to emit at that target. Verified against the Microsoft support lifecycle as of 2026-08-01.
Support lifecycle
| Version | Type | Released | End of support | Runtime |
|---|---|---|---|---|
| 7.6 | LTS - current target | 18-Mar-2026 | 14-Nov-2028 | .NET 10 |
| 7.5 | Stable | 23-Jan-2025 | 10-Nov-2026 | .NET 9 |
| 7.4 | LTS (previous) | 16-Nov-2023 | 10-Nov-2026 | .NET 8 |
| 5.1 | Windows component | Aug-2016 | Windows lifecycle | .NET Framework 4.x |
Everything below 7.4 is retired and receives no security updates. Never generate code or CI matrices targeting PowerShell 6.x, 7.0-7.3.
Act on this: PowerShell 7.4 and 7.5 both go out of support on 10-Nov-2026. Any project pinned to 7.4 or 7.5 needs a 7.6 upgrade planned now. Recommend 7.6 for all new work.
Windows PowerShell 5.1 is not deprecated - it ships with Windows and is supported under the Windows lifecycle - but it receives no new features. Treat it as a compatibility target, never as the target you optimize for.
Choosing a target
Ask which applies before generating code:
- Cross-version modules (shipping to unknown estates) - target
5.1withCompatiblePSEditions = @('Desktop', 'Core'). Gate 7.x-only features behind version checks. - Modern-only automation (containers, CI, greenfield) - target 7.6 with
CompatiblePSEditions = @('Core'). Do not carry 5.1 compatibility cost for no reason. - Windows-estate tooling that must run in-box on servers without pwsh installed - target
5.1.
Declare the target explicitly, at the top of scripts and in the module manifest:
#requires -Version 7.6
@{
PowerShellVersion = '7.6'
CompatiblePSEditions = @('Core')
}
Use #requires -Version 7.4 only when you have verified the code avoids every 7.5/7.6 feature
listed below. #requires -Version 7.0 is obsolete - that version is retired; if you mean "any
PowerShell 7", the lowest supported floor is 7.4, and after 10-Nov-2026 it is 7.6.
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.
- 1mo ago First seen · 243 lines · 2,728 tokens per session scan A 13b4c907417c
Powershell-Copilot-Standards powershell-version.instructions.md is an instructions file published in the GitHub repository fadwen/Powershell-Copilot-Standards (19 stars, last pushed 1mo ago), licensed MIT. It adds 2,728 tokens to every session, about $0.0109 per session on Opus 5.5. 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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