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HC3_mcp: Instructions file for GitHub Copilot

.github/copilot-instructions.md

HC3_mcp copilot-instructions.md is an instructions file for GitHub Copilot from jangabrielsson/HC3_mcp. It costs 210 tokens per session, scanned C, original, MIT.

Project instructions for a VS Code extension with a server that connects coding agents to Fibaro HC3, a home-automation system, through its REST API. They describe the TypeScript project, setup, build, debugging, and documentation requirements.

In plain words
What is it for?
Use them when developing, compiling, debugging, or documenting the VS Code extension and its Fibaro HC3 integration.
Why use it?
They give an agent the project context and a checklist for compiling and preparing the extension. This reduces missed setup or documentation work.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is jangabrielsson/HC3_mcp's own configuration. It tells GitHub Copilot how to work on HC3_mcp 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 HC3_mcp configures →

not rated 3repo 1y ago C scan 210 tokens original MIT
View source ↗ jangabrielsson/HC3_mcp
Reuse

Borrowing it

Nothing to install: this file belongs to jangabrielsson/HC3_mcp. 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/jangabrielsson/HC3_mcp/master/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/jangabrielsson/HC3_mcp

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 HC3_mcp copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jangabrielsson/hc3_mcp/copilot-instructions/github.svg)](https://agentmods.dev/instructions/jangabrielsson/hc3_mcp/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/jangabrielsson/hc3_mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/jangabrielsson/hc3_mcp/copilot-instructions/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 HC3_mcp copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/jangabrielsson/hc3_mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/jangabrielsson/hc3_mcp/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 210 This file is loaded in full into every session.
When invoked 210 The same file — it is already loaded in full.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00210 $0.00210
Opus 5.5 $0.00084 $0.00084
Sonnet 5.5 $0.00042 $0.00042
Haiku 4.5 $0.00021 $0.00021

Measured 2mo ago against content hash f8c2ff532e09, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

HC3_mcp copilot-instructions.md scanned grade C 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 2mo 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

<!-- Use this file to provide workspace-specific custom instructions to Copilot. For more details, visit https://code.visualstudio.com/docs/copilot/copilot-customization#_use-a-githubcopilotinstructionsmd-file -->
.github/copilot-instructions.md · 19 lines

What it actually says

  • Verify that the copilot-instructions.md file in the .github directory is created.

  • Clarify Project Requirements - VS Code extension with MCP server for Fibaro HC3 REST API integration

  • Scaffold the Project - Created VS Code extension using TypeScript template

  • Customize the Project - Added MCP server provider, configuration, and Fibaro HC3 integration

  • Install Required Extensions - No additional extensions needed

  • Compile the Project - TypeScript compiled successfully without errors

  • Create and Run Task - Build task already exists in .vscode/tasks.json

  • Launch the Project - Ready for debugging (user can press F5)

  • Ensure Documentation is Complete - README.md updated with comprehensive documentation

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. 2mo ago First seen · 19 lines · 210 tokens per session scan C f8c2ff532e09

Subscribe to this mod's changes

HC3_mcp copilot-instructions.md is an instructions file published in the GitHub repository jangabrielsson/HC3_mcp (3 stars, last pushed 1y ago), licensed MIT. It adds 210 tokens to every session, about $0.0008 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Backend and APIsHardware and IoTaifibarohc3mcp
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