Borrowing it
Nothing to install: this file belongs to j0KZ/synthlab-mcp-server. 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/j0KZ/synthlab-mcp-server/main/CLAUDE.mdgit clone --depth 1 https://github.com/j0KZ/synthlab-mcp-serverWrote 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/j0kz/synthlab-mcp-server/claude-md)<a href="https://agentmods.dev/instructions/j0kz/synthlab-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/j0kz/synthlab-mcp-server/claude-md.svg" alt="Measured on agentmods" 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 | $0.02509 | $0.02509 |
| Opus 5 | $0.01255 | $0.01255 |
| Sonnet 5 | $0.00502 | $0.00502 |
| Haiku 4.5 | $0.00251 | $0.00251 |
Grade A, and why
synthlab-mcp-server 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 6d 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 — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.
synthlab-mcp-server
Project Overview
MCP server that turns Claude into a synthesis workstation — compose songs, generate Pure Data & VCV Rack patches, map MIDI controllers, and control live synths. Targets Pd-vanilla compatible patches with focus on MIDI workflows.
Architecture
- Runtime: Node.js (TypeScript), ES2022 target, ESM modules
- MCP SDK:
@modelcontextprotocol/sdkwith stdio transport - Communication with Pd: OSC (native
dgram) and FUDI (nativenet) — zero external network deps - Patch parsing: Custom parser for .pd text format (
src/core/parser.ts) - VCV Rack: Registry of 19 plugins (~600 modules) auto-scraped from C++ source
Directory Structure
synthlab-mcp-server/
├── src/
│ ├── index.ts # MCP server entry — 10 tools + 1 prompt
│ ├── types.ts # PdPatch, PdCanvas, PdNode, PdConnection
│ ├── constants.ts # Format constants, layout defaults
│ ├── core/
│ │ ├── parser.ts # .pd text → AST
│ │ ├── serializer.ts # AST → .pd text + buildPatch()
│ │ ├── object-registry.ts # ~95 Pd-vanilla objects with port counts
│ │ └── validator.ts # 8 structural checks
│ ├── schemas/ # 7 Zod input validation schemas
│ ├── tools/ # 10 MCP tool handlers
│ │ ├── parse.ts # parse_patch
│ │ ├── generate.ts # generate_patch
│ │ ├── validate.ts # validate_patch
│ │ ├── analyze.ts # analyze_patch
│ │ ├── template.ts # create_from_template
│ │ ├── rack.ts # create_rack
│ │ ├── control.ts # send_message
│ │ ├── list-vcv.ts # list_vcv_modules
│ │ ├── vcv.ts # generate_vcv
│ │ └── compose.ts # compose_patch
│ ├── templates/ # 11 parameterized instruments
│ │ ├── index.ts # Template registry + dispatcher
│ │ ├── modules/ # Reusable: oscillator, filter, vca, envelope, delay, reverb
│ │ └── (synth|sequencer|drum-machine|reverb|mixer|clock|chaos|maths|turing-machine|granular|bridge).ts
│ ├── composer/ # Song composition engine
│ │ ├── presets.ts # 9 genre presets
│ │ ├── moods.ts # 7 mood adjustments
│ │ ├── scales.ts # 10 scales × 12 keys
│ │ ├── wiring-rules.ts # Auto-wiring (clock→seq/drums→synth→mixer→fx)
│ │ └── song-mapper.ts # SongSpec → CreateRackInput
│ ├── controllers/ # MIDI controller integration
│ │ ├── auto-mapper.ts # 4-phase auto-mapping
│ │ ├── pd-controller.ts # Input controller patch
│ │ ├── pd-output-controller.ts
│ │ ├── param-injector.ts # Parameter bus injection
│ │ └── k2-deck-config.ts # K2 LED config (JSON)
│ ├── devices/ # Hardware profiles: k2, microfreak, tr8s
│ ├── vcv/ # VCV Rack generator
│ │ ├── generator.ts # Module resolution + cable wiring
│ │ ├── positioner.ts # Left-to-right HP layout
│ │ ├── registry.ts # Plugin lookup + fuzzy matching
│ │ └── registry/ # 19 auto-generated plugin registries
│ ├── wiring/
│ │ └── bus-injector.ts # throw~/catch~ (audio), send/receive (control)
│ └── network/ # Zero external deps
│ ├── osc-encoder.ts # OSC 1.0 binary encoder (dgram)
│ ├── fudi-formatter.ts # FUDI text formatter
│ ├── udp-sender.ts # UDP fire-and-forget
│ └── tcp-sender.ts # TCP send/receive
├── scripts/
│ ├── build-vcv-registry.ts # Clone repos → parse C++ → generate .ts
│ ├── parse-cpp-enums.ts # C++ enum parser
│ ├── parse-svg-width.ts # SVG panel → HP conversion
│ └── update-readme-stats.ts
├── tests/ # 34 test files, 741 tests
├── docs/ # PRD, Architecture, Rules, Plan, Scaffold
├── .github/workflows/ci.yml # Node 18/20/22 matrix + npm publish
├── package.json
├── tsconfig.json
└── CLAUDE.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.
- 6d ago First seen · 188 lines · 2,509 tokens per session scan A 07a7e871d6ed
synthlab-mcp-server CLAUDE.md is an instructions file published in the GitHub repository j0KZ/synthlab-mcp-server (4 stars, last pushed 6mo ago), licensed MIT. It adds 2,509 tokens to every session, about $0.0125 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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