CopilotInstructions: Instructions file for GitHub Copilot

.github/instructions/msbuild.instructions.md

CopilotInstructions msbuild.instructions.md is an instructions file for GitHub Copilot from jschick04/CopilotInstructions. It costs 3,287 tokens per session, scanned A, original, no licence file.

Build instructions for Microsoft Build (MSBuild), the system used to compile many .NET and C++ projects. They cover property expressions, console output, locked-down environments, and compiler-version portability.

In plain words
What is it for?
Building MSBuild projects, capturing and trimming build output, writing property functions, and keeping C++ builds portable across compiler versions.
Why use it?
They prevent builds from relying on unavailable internet downloads, mishandling escaped strings, or using options that work only with one compiler version.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is jschick04/CopilotInstructions's own configuration. It tells GitHub Copilot how to work on CopilotInstructions itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything CopilotInstructions configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jschick04/CopilotInstructions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jschick04/CopilotInstructions/main/.github/instructions/msbuild.instructions.md
Clone the repo
git clone --depth 1 https://github.com/jschick04/CopilotInstructions

Made for: GitHub Copilot.

Wrote 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.

agentmods badge for CopilotInstructions msbuild.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jschick04/copilotinstructions/msbuild/github.svg)](https://agentmods.dev/instructions/jschick04/copilotinstructions/msbuild)
Your own site
<a href="https://agentmods.dev/instructions/jschick04/copilotinstructions/msbuild"><img src="https://agentmods.dev/badge/instructions/jschick04/copilotinstructions/msbuild/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.

agentmods 80×15 button for CopilotInstructions msbuild.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/jschick04/copilotinstructions/msbuild"><img src="https://agentmods.dev/badge/instructions/jschick04/copilotinstructions/msbuild.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3,287 This file is loaded in full into every session.
When invoked 3,287 The same file — it is already loaded in full.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.03287 $0.03287
Opus 5.5 $0.01315 $0.01315
Sonnet 5.5 $0.00657 $0.00657
Haiku 4.5 $0.00329 $0.00329

Measured 1mo ago against content hash 81848ac188c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

CopilotInstructions msbuild.instructions.md scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **Audit lens:** `rg "DownloadFile|Invoke-WebRequest|wget|curl" *.csproj *.targets *.props eng/*.ps1 eng/*.sh` - every match must EITHER (a) meet ALL FOUR criteria above (pinned URL + SHA256 verification + internal-mirr
.github/instructions/msbuild.instructions.md · 115 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

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.

  1. 1mo ago First seen · 115 lines · 3,287 tokens per session scan A 81848ac188c0

Subscribe to this mod's changes

CopilotInstructions msbuild.instructions.md is an instructions file published in the GitHub repository jschick04/CopilotInstructions (1 stars, last pushed 8d ago), with no licence file. It adds 3,287 tokens to every session, about $0.0131 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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