Borrowing it
Nothing to install: this file belongs to Turik1/morningstar-midi-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/Turik1/morningstar-midi-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/Turik1/morningstar-midi-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/turik1/morningstar-midi-mcp/claude-md)<a href="https://agentmods.dev/instructions/turik1/morningstar-midi-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/turik1/morningstar-midi-mcp/claude-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/turik1/morningstar-midi-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/turik1/morningstar-midi-mcp/claude-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 | $0.00531 | $0.00531 |
| Opus 5 | $0.00266 | $0.00266 |
| Sonnet 5 | $0.00106 | $0.00106 |
| Haiku 4.5 | $0.00053 | $0.00053 |
Grade A, and why
morningstar-midi-mcp CLAUDE.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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.
morningstar-midi-mcp
MCP server for configuring Morningstar Engineering MIDI controllers via natural language.
Stack
- TypeScript ES modules (
"type": "module"), Node16 module resolution, strict mode npm test— vitest run;npm run build— tsc tobuild/- zod v4 (not v3) — API identical for basic schemas; MCP SDK supports both
- Imports use
.jsextension for.tssource files (Node16 ESM requirement)
Project Structure
src/protocol.ts— SysEx message encoding/decoding, checksumsrc/commands.ts— High-level Morningstar controller commandssrc/midi.ts— USB-MIDI connection layer (jzz wrapper)src/models.ts— Controller model definitions and physical layoutssrc/devices.ts— OpenMIDI device database loader and searchsrc/tools.ts— MCP tool registrationssrc/config.ts— setup.yaml loadingsrc/state.ts— Shadow state for tracking written preset messagessrc/index.ts— Entry pointdocs/superpowers/specs/— Design specdocs/superpowers/plans/— Implementation plan
Git
- Conventional commits required:
feat:,fix:,docs:,refactor:, etc.
MCP Constraints
- stdio transport — NEVER
console.log(), onlyconsole.error()(corrupts JSON-RPC) - Tool registration:
server.tool(name, { param: z.string() }, handler)
OpenMIDI Submodule (openmidi/)
- CC number field is
value(NOTnumber) in YAML files - Brand/device names from
mapping.json, not directory names - Path:
openmidi/data/brands/<brand-slug>/<model-slug>.yaml
Key Module Facts
resolvePreset(identifier, modelName)— second arg is model name string, not device IDDeviceDatabase.search()— case-insensitive substring onbrand + deviceShadowStatetracks written messages locally (SysEx can't read preset messages back)buildSysExMessage()— use in tests to construct valid mock SysEx responses
jzz Type Declarations (src/jzz.d.ts)
- Do NOT use
extends Promise<Self>pattern — causes TS1062 circular reference - Use
Promise<T>return types on methods instead
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.
- 12d ago First seen · 45 lines · 531 tokens per session scan A 84d5cfcbc31f
morningstar-midi-mcp CLAUDE.md is an instructions file published in the GitHub repository Turik1/morningstar-midi-mcp (1 stars, last pushed 6mo ago), licensed MIT. It adds 531 tokens to every session, about $0.0027 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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