MCP.Market

Grandorgue MCP server

by sandraschi·io.github.sandraschi/grandorgue-mcp·v0.3.0·4 stars
No reviews yet

GrandOrgue pipe organ simulator MCP server - MIDI bridge, organ control, sample set management, m...

A88/100grade A
Write a reviewInstall
What users say
No reviews yet
Be the first
Safety scan
A88/100

full report

Adoption
Growing

4 stars

Reviews

Write one

Nobody has reviewed Grandorgue yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

Grandorgue tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.10 · 2026-10-30 · same rubric, same numbers if you re-run it

no findings
  • –Code scanpackage could not be scannedn/a
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 6 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 88/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Grandorgue compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
88/100
higher than 75% of 48,243 servers
GitHub stars
4
more than 82% of 28,706 servers

Install Grandorgue in Claude Code, Cursor or VS Code

The registry entry has no remote endpoint or installable package.

What the publisher says

From the Grandorgue repository's README, as published. We do not edit it. Read it on GitHub

GrandOrgue MCP

Modern Organ Console — a free control surface for the GrandOrgue pipe organ simulator.

GrandOrgue MCP gives GrandOrgue a beautiful, responsive web console + AI-agent-capable backend. It connects to GrandOrgue via MIDI and replaces its aging wxWidgets GUI with a modern React dashboard. Every stop, piston, manual, and swell pedal is controllable from any browser — or from an AI agent via MCP tools.

Built for the GrandOrgue community with gratitude for decades of free organ simulation. This is our contribution back — a modern console layer that works with any existing GrandOrgue installation and sample set.

Contents

  • Quick Start
  • Documentation
  • README.md — this file, overview and quick start
  • docs/GRANDORGUE_GUIDE.md — what GrandOrgue is, history of PC organ simulation, Hauptwerk comparison
  • docs/ARCHITECTURE.md — system architecture, MIDI bridge, port layout
  • docs/BACH_CATALOG.md — complete J.S. Bach organ MIDI repertoire
  • docs/MIDI_SETUP.md — step-by-step MIDI configuration
  • docs/MCP_TOOLS.md — AI agent tool reference
  • docs/SAMPLE_SETS.md — marketplace, free sample sets, installation guide
  • Ports
  • Tech Stack
  • License

Quick Start

Prerequisites

  • GrandOrgue installed (Windows / Linux / macOS)
  • uv for Python dependency management
  • Node.js 20+ for the web console

One-Command Setup

# Install backend deps
just install

# Install frontend deps
just install-web

# Launch everything (backend + frontend + browser)
just web

The backend starts on port 11010 (HTTP mode), the frontend on port 11011.

Claude Desktop (stdio)

The server defaults to stdio transport for MCP clients. Build the bundle with just mcpb and install dist/grandorgue-mcp-vX.Y.Z.mcpb in Claude Desktop. The webapp uses HTTP mode (MCP_TRANSPORT=http), which just web sets automatically.

Manual Start

# Terminal 1 — Backend
uv run grandorgue-mcp

# Terminal 2 — Frontend (opens browser)
cd web_sota && bun run dev

First-Time Setup

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Grandorgue: common questions

Is Grandorgue MCP server safe?
Yes, by our scan: it is graded A (88/100). Read the Grandorgue safety report
Does Grandorgue need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Grandorgue maintained?
The last commit was 13 days ago (2026-10-24). The latest release is v0.3.0.
How does Grandorgue compare with other MCP servers?
safety score 88/100 (higher than 75% of 48,243 servers); github stars 4 (more than 82% of 28,706 servers). Full comparison.

More from sandraschi →