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music-assistant-mcp: Instructions file for Claude Code

CLAUDE.md

music-assistant-mcp CLAUDE.md is an instructions file for Claude Code from devjourney/music-assistant-mcp. It costs 242 tokens per session, scanned A, original, MIT.

Instructions for a music-control MCP server that connects to Music Assistant, a system for searching and playing music across a personal library.

In plain words
What is it for?
Developing or running tools for music search, libraries, playback, queues, and playlists through a Music Assistant server.
Why use it?
They show an agent where the server code lives, how its tools are organized, and which settings are needed to run it.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is devjourney/music-assistant-mcp's own configuration. It tells Claude Code how to work on music-assistant-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 music-assistant-mcp configures →

not rated 2repo 7mo ago A scan 242 tokens original MIT
View source ↗ devjourney/music-assistant-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to devjourney/music-assistant-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/devjourney/music-assistant-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/devjourney/music-assistant-mcp

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 242 This file is loaded in full into every session.
When invoked 242 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 $0.00242 $0.00242
Opus 5.5 $0.00097 $0.00097
Sonnet 5.5 $0.00048 $0.00048
Haiku 4.5 $0.00024 $0.00024

Measured 2mo ago against content hash 5dfff94a2766, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

music-assistant-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 · 26 lines

What it actually says

MusicAssistantMCP

MCP server wrapping music-assistant-client via FastMCP.

Project Structure

  • src/music_assistant_mcp/server.py - FastMCP instance, lifespan, entry point
  • src/music_assistant_mcp/connection.py - Env var parsing, auth config
  • src/music_assistant_mcp/serializers.py - MA model → dict converters
  • src/music_assistant_mcp/tools/ - Tool modules (search, library, playback, queue, playlists)
  • src/music_assistant_mcp/resources.py - MCP resources

Key Patterns

  • Each tool module has a register(mcp) function that decorates tools onto the FastMCP instance
  • Tools get the MA client from ctx.request_context.lifespan_context["client"]
  • All tools return JSON strings
  • The lifespan context manager handles connection/auth lifecycle
  • Serializers use getattr with fallbacks to handle both full model objects and ItemMapping lightweight refs

Running

MA_SERVER_URL=http://host:8095 MA_TOKEN=xxx music-assistant-mcp
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 · 26 lines · 242 tokens per session scan A 5dfff94a2766

Subscribe to this mod's changes

music-assistant-mcp CLAUDE.md is an instructions file published in the GitHub repository devjourney/music-assistant-mcp (2 stars, last pushed 7mo ago), licensed MIT. It adds 242 tokens to every session, about $0.0010 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.

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