grandorgue-mcp: Instructions file for GitHub Copilot

.github/copilot-instructions.md

grandorgue-mcp copilot-instructions.md is an instructions file for GitHub Copilot from sandraschi/grandorgue-mcp. It costs 88 tokens per session, scanned A, original, MIT.

Instructions for using an MCP server connected to GrandOrgue, a computer simulator for pipe organs. They cover MIDI connections, organ controls, sample sets, and Bach repertoire.

In plain words
What is it for?
Use them to inspect the current GrandOrgue status, list available MIDI ports, control the simulated organ, manage sample sets, work with repertoire, and record the ending state.
Why use it?
They provide a consistent way to check the simulator and MIDI setup before work and preserve the organ's state afterward. This avoids acting on an unknown configuration.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is sandraschi/grandorgue-mcp's own configuration. It tells GitHub Copilot how to work on grandorgue-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 grandorgue-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to sandraschi/grandorgue-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/sandraschi/grandorgue-mcp/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/sandraschi/grandorgue-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 grandorgue-mcp copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/sandraschi/grandorgue-mcp/copilot-instructions.svg)](https://agentmods.dev/instructions/sandraschi/grandorgue-mcp/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/sandraschi/grandorgue-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/sandraschi/grandorgue-mcp/copilot-instructions.svg" alt="Measured on agentmods" height="20"></a>
Per session 88 This file is loaded in full into every session.
When invoked 88 The same file — it is already loaded in full.
Security scan A 0 findings. 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 $0.00088 $0.00088
Opus 5 $0.00044 $0.00044
Sonnet 5 $0.00018 $0.00018
Haiku 4.5 $0.00009 $0.00009

Measured 8d ago against content hash 1d1d431b60ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

grandorgue-mcp 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 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.

.github/copilot-instructions.md · 11 lines

What it actually says

Session Context (GrandOrgue MCP)

You have access to a GrandOrgue pipe organ simulator MCP server with 30 tools for MIDI bridge, organ control, sample set management, and Bach repertoire.

Before starting work:

  1. Check current state: go_status
  2. Query MIDI ports: go_list_midi_ports

At end of work, save state:

  • Note organ state for next session
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. 8d ago First seen · 11 lines · 88 tokens per session scan A 1d1d431b60ba

Subscribe to this mod's changes

grandorgue-mcp copilot-instructions.md is an instructions file published in the GitHub repository sandraschi/grandorgue-mcp (2 stars, last pushed yesterday), licensed MIT. It adds 88 tokens to every session, about $0.0004 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 2026-08-31.

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