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OSC_MCP: Instructions file for Claude Code

CLAUDE.md

OSC_MCP CLAUDE.md is an instructions file for Claude Code from darkwings/OSC_MCP. It costs 350 tokens per session, scanned A, original, Apache-2.0.

A project instruction document for OSC_MCP, a server that lets AI assistants control a Behringer X-Air XR18 digital mixer and other OSC-compatible applications. It records the project structure, tools, commands, and testing rules.

In plain words
What is it for?
Use it when developing OSC_MCP, installing dependencies, running tests, inspecting the server, or adding features that must include tests.
Why use it?
It gives an AI coding agent the project context and working commands needed to make consistent changes and test them.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is darkwings/OSC_MCP's own configuration. It tells Claude Code how to work on OSC_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 OSC_MCP configures →

not rated 1repo 8mo ago A scan 350 tokens original Apache-2.0
View source ↗ darkwings/OSC_MCP
Reuse

Borrowing it

Nothing to install: this file belongs to darkwings/OSC_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/darkwings/OSC_MCP/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/darkwings/OSC_MCP

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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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.

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Per session 350 This file is loaded in full into every session.
When invoked 350 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 $0.00350 $0.00350
Opus 5.5 $0.00140 $0.00140
Sonnet 5.5 $0.00070 $0.00070
Haiku 4.5 $0.00035 $0.00035

Measured 2mo ago against content hash a269ded791f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

OSC_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 2mo 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.

CLAUDE.md · 39 lines

What it actually says

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

OSC_MCP is an MCP (Model Context Protocol) Server that implements the Open Sound Control (OSC) protocol. It allows AI assistants to send and receive OSC messages to control a Behringer X-Air XR18 digital mixer and other OSC-compatible applications.

Tech Stack

  • Python >=3.11
  • MCP SDK: mcp[cli] (FastMCP with @mcp.tool() decorators)
  • OSC: python-osc (SimpleUDPClient)
  • Package manager: uv
  • Transport: stdio

Project Structure

  • src/osc_mcp/server.py — MCP server + all tool definitions
  • src/osc_mcp/osc_client.py — OSC UDP send/query wrapper
  • src/osc_mcp/xair.py — XR18-specific address patterns, dB conversion, NameRegistry
  • tests/ — pytest test suite

Commands

  • uv sync — install/update dependencies
  • uv run pytest — run full test suite
  • uv run pytest tests/test_xair.py -k test_name — run a specific test
  • uv run osc-mcp — run MCP server via stdio
  • uv run mcp dev src/osc_mcp/server.py — MCP inspector for interactive testing

Testing Policy

Every feature must have tests before delivery. Run uv run pytest and ensure all tests pass before committing.

License

Apache License 2.0

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. 2mo ago First seen · 39 lines · 350 tokens per session scan A a269ded791f4

Subscribe to this mod's changes

OSC_MCP CLAUDE.md is an instructions file published in the GitHub repository darkwings/OSC_MCP (1 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 350 tokens to every session, about $0.0014 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.

Hardware and IoT
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