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.
curl -O https://raw.githubusercontent.com/sandraschi/grandorgue-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/sandraschi/grandorgue-mcpWrote 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/sandraschi/grandorgue-mcp/agents-md)<a href="https://agentmods.dev/instructions/sandraschi/grandorgue-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/grandorgue-mcp/agents-md/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/sandraschi/grandorgue-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/sandraschi/grandorgue-mcp/agents-md.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 | $0.00391 | $0.00391 |
| Opus 5.5 | $0.00156 | $0.00156 |
| Sonnet 5.5 | $0.00078 | $0.00078 |
| Haiku 4.5 | $0.00039 | $0.00039 |
Grade A, and why
grandorgue-mcp AGENTS.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.
What it actually says
grandorgue-mcp — Agent Guide
Overview
GrandOrgue pipe organ simulator MCP server — MIDI bridge, organ control, sample set management, modern web console
Entry Points
- stdio (Claude Desktop / mcpb, default):
uv run grandorgue-mcp - HTTP (webapp backend :11010, MCP at /mcp):
MCP_TRANSPORT=http uv run grandorgue-mcporjust run - Full webapp (backend + Vite frontend :11011):
just web/.\start.ps1
Standards
- 34 FastMCP tools (31 flat + 3 Prefab app cards); portmanteau refactor planned for v0.3
- Dual transport via
MCP_TRANSPORTenv:stdio(default) |http - Responses: structured dicts with
success,message, domain-specific fields - Shared logic lives in plain helpers; never call
@mcp.tool()-decorated objects directly - Depot file names must go through
_depot_path()(traversal-safe) - Blocking work goes through
anyio.to_thread.run_sync - See mcp-central-docs for fleet-wide coding standards
Key Files
src/grandorgue_mcp/server.py— single canonical server (mcpb stages from here)pyproject.toml— build config and entry pointsscripts/mcpb-pack.ps1— mcpb bundle staging + pack (just mcpb; wraps fleetmake-mcpb.ps1, fresh-stagessrc/)CLAUDE.md— Claude Code context
Install docs: follow mcp-central-docs/standards/AGENT_INSTALL_REFERENCE.md
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 Changed · +9 tokens per session 7128013709b1
- 1mo ago Changed · +22 tokens per session 23d80ac6fa03
- 2mo ago First seen · 27 lines · 360 tokens per session scan A 12af166a49b2
grandorgue-mcp AGENTS.md is an instructions file published in the GitHub repository sandraschi/grandorgue-mcp (4 stars, last pushed 13d ago), licensed MIT. It adds 391 tokens to every session, about $0.0016 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 2026-08-31.
grandorgue-mcp AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| grandorgue-mcp AGENTS.mdsandraschi/grandorgue-mcp | Instructions file | 4 | 13d ago | MIT | A | 391 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |