yume: Skill for Claude Code

.claude/skills/yume-audio-designer/SKILL.md

yume-audio-designer is a skill for Claude Code from kamwoh/yume. It costs 118 tokens per session (3,353 once invoked), scanned A, original, MIT.

A game-audio design skill for planning background music, ambience, intensity changes, sound buses, and musical stings across a Yume game. It covers how music changes between locations, moods, combat, bosses, victories, and other game events.

In plain words
What is it for?
Use it to assign music and ambience to screens, levels, locations, and moods; plan calm, exploration, combat, and boss layers; design crossfades and audio buses; and specify victory jingles or event stings.
Why use it?
It separates overall music architecture from choosing individual sound-effect files. This gives each game state and event a planned musical response that can coordinate with dialogue and reactive gameplay.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions subagents.

This is kamwoh/yume's own configuration. It tells Claude Code how to work on yume 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 yume configures →

View source ↗ kamwoh/yume
Reuse

Borrowing it

Nothing to install: this file belongs to kamwoh/yume. 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/kamwoh/yume/master/.claude/skills/yume-audio-designer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/kamwoh/yume

Made for: Claude Code.

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Per session 118 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,353 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00118 $0.03353
Opus 5 $0.00059 $0.01677
Sonnet 5 $0.00024 $0.00671
Haiku 4.5 $0.00012 $0.00335

Measured 12d ago against content hash 0c64105ee7c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

yume-audio-designer 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.

.claude/skills/yume-audio-designer/SKILL.md · 365 lines

How it starts

The opening of the file, as written. The whole thing — 365 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/yume-audio-designer

You are the audio designer for Yume. You don't pick the "door_creak.ogg" filename for a single signal — that's yume-asset-designer's per-cue mapping. You design the musical architecture of a game: when does music shift, what bus mixes go where, how do calm/combat layers crossfade, what jingles fire on victory.

This skill loads into the orchestrator's main context (Tier 2.6 — no subagent spawn).

Soul workflow membership — Layer 3 (Audio)

You are Layer 3 of 5 in the soul workflow (per .claude/rules/soul.md). Your job: BGM + ambience + stings tied to signals so the world sounds like it feels.

Cross-reinforce with adjacent layers:

  • Match BGM mood to Layer 1 voice tone: gruff dialogue → low brass; lyrical voice → harp/strings.
  • Match BGM transitions to Layer 5 reactive rules: when a reactive rule fires (tier-up, bailiff arrival, boss phase), there must be an audio sting.
  • Coordinate with Layer 4 juice: kinetic events (sale clinch, hit-pause) need a one-shot to land the kinesthetic feel.

Soul minimum: ≥1 BGM per distinct location/mood, ≥1 ambient loop per level type (shop/wilderness/dungeon/town), ≥3 signature stings per major event class (debt, combat, narrative).

Why this skill exists

Without an audio-architecture specialist, games either:

  • Ship with one looping track for the whole game (sokoban v0.1 shipped this — flat, no emotional arc)
  • Have BGM but no intensity shifts (combat feels the same as exploration)
  • Hand-author audio bus volumes per-game with no consistency
  • Forget transition stingers (level-clear, boss-spawn) — moments feel flat
  • Have ambient sound but never layer it dynamically (cave should sound different from forest)

This skill produces an audio-design.md with rationale + a music-bed section in audio/cues.json.

Engine-capability gate (MANDATORY before declaring complete)

Before signing off, verify the cues you authored can ACTUALLY play. Empirical case (2026-05-08): merchant authored 12 BGM cues + 7 ambient loops + 9 stings in audio/cues.json::music_beds. User played: "where is the background music you said early?" Reason: audio_bus.gd was sfxr-only (one-shot procedural). The music_beds metadata was forward-compat but NO ENGINE CODE READ IT. BGM degraded to silence.

Read the full file on GitHub · 365 lines

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. 12d ago First seen · 365 lines · 0 tokens per session scan A 0c64105ee7c5

Subscribe to this mod's changes

yume-audio-designer is a skill published in the GitHub repository kamwoh/yume (21 stars, last pushed 2mo ago), licensed MIT. It adds 118 tokens to every session and 3,353 once invoked, about $0.0006 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 2026-08-30.

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