Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add ouzlifaneyassine1-dot/onyx-engine --skill audio-directiongit clone --depth 1 https://github.com/ouzlifaneyassine1-dot/onyx-engineWrote 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/skills/ouzlifaneyassine1-dot/onyx-engine/audio-direction)<a href="https://agentmods.dev/skills/ouzlifaneyassine1-dot/onyx-engine/audio-direction"><img src="https://agentmods.dev/badge/skills/ouzlifaneyassine1-dot/onyx-engine/audio-direction/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/skills/ouzlifaneyassine1-dot/onyx-engine/audio-direction"><img src="https://agentmods.dev/badge/skills/ouzlifaneyassine1-dot/onyx-engine/audio-direction.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 | $0.00065 | $0.03073 |
| Opus 5 | $0.00032 | $0.01537 |
| Sonnet 5 | $0.00013 | $0.00615 |
| Haiku 4.5 | $0.00006 | $0.00307 |
Grade A, and why
audio-direction 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 10d 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.
This is a copy
92% identical to audio-direction — 49 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 259 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/audio-direction — Define the Sonic Identity
Overview
Most indie games sound like a single library used flat. The same generic "swoosh" for menu, jump, pickup, hit. That's not audio direction — that's audio absence. This skill builds an audio bible that names the music style, the SFX vocabulary, the dynamic music plan, and the spatial / mix rules. Writes to .onyx/audio-bible.md and configures the audio bus layout in the project so the rest of the work has a real foundation.
Core principle: SFX needs a vocabulary, not a library. Eight named SFX classes with consistent character beat 80 random library hits.
Steps
1. Open with three references
Ask exactly this:
Three reference tracks, games, or films for the music. What instruments matter? And what's the SFX vibe — chunky, clean, synthetic, or organic?
Three is the minimum. One or two collapses into a clone. References are the highest-signal input — listen carefully.
If they freeze, offer four axes (not titles):
Pick the closest: a) orchestral + cinematic (Hollow Knight, Journey), b) lo-fi electronic + ambient (Disco Elysium, Outer Wilds), c) chiptune / synth (Hyper Light Drifter, Celeste), d) acoustic / folk (Sable, A Short Hike).
2. Read the brief and art bible if they exist
Read .onyx/GameSoul.md
Read .onyx/art-bible.md
Audio must rhyme with the visuals. Quote it back:
Art bible says "soft, hand-warmed, golden-hour, painterly". That rhymes with acoustic / folk / lo-fi over orchestral or aggressive synth. Confirming.
If the brief says "horror", that constrains the music style harder than the user's references will. Name the constraint.
3. Pin the music style
Force one primary style. Sub-styles can blend, but a primary is required.
| Style | Anchor instruments | Pairs with | Avoid |
|---|---|---|---|
| Orchestral cinematic | Strings, brass, choir | Story-led, fantasy | Casual / cozy |
| Acoustic / folk | Guitar, piano, hand percussion | Cozy, narrative | Action / horror |
| Lo-fi electronic | Vintage synth pad, tape sat, light beat | Atmospheric, indie | Combat-heavy |
| Chiptune / synthwave | 8-bit / 16-bit chips, FM synth | Retro, platformer | Realism |
| Industrial / metal | Distorted bass, percussion-led | Horror, action | Cozy |
| Ambient drone | Pads, no drums, slow movement | Walking sim, horror | Action |
| Jazz / fusion | Live instruments, improv | Stylish, narrative | Generic action |
| Tracker / hyperpop | Glitchy, dense, modern | Esoteric, indie | Mass appeal |
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.
- 10d ago First seen · 259 lines · 65 tokens per session scan A 5bf9f289f5c5
audio-direction is a skill published in the GitHub repository ouzlifaneyassine1-dot/onyx-engine (0 stars, last pushed 2mo ago), licensed MIT. It adds 65 tokens to every session and 3,073 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to audio-direction, differing in 49 lines, and is treated as a copy.
Other skills, from other repositories
metasounds
Create and modify MetaSound Source assets — add/connect nodes, wire pins, set input defaults, and play procedurally (MetaSoundService). Use when the user asks to create a MetaSound, build or edit a MetaSound graph, add operator/input/output nodes, or generate procedural audio.
voice-line
Use when generating TTS voice lines — NPC barks, narrator, dialogue. Covers where voice ids come from, a character-to-voice decision tree, stability/style/similarity guidance, and the multi-line dialogue case via texttodialogue. Trigger on "make a voice line", "narrator", "NPC says", "voice for the merchant", "TTS…
ambient-bed
Use when generating a long looping location ambience — forest at dawn, dungeon air, city street, spaceship hum, cave drip. Non-melodic, low-energy, never draws attention. Wires as a looping AudioStreamPlayer on the Ambient bus with a marked seamless loop. Trigger on "ambient bed", "room tone", "background ambience"…
audio-direction
Use when defining the sonic identity — music style, instruments, SFX vocabulary, dynamic music plan. Outputs an audio bible at .summer/audio-bible.md. Trigger on "audio direction", "audio bible", "music style", "sound design", "what should it sound like", "dynamic music".
music-track
Use when generating a looped or cinematic music track. Loops are authored at >=30s with a marked loop point; cinematic tracks at >=60s linear. Trigger on "generate music", "make a calm track", "boss music", "title screen music", "main theme", "exploration loop", "combat track".
sound-effect
Use when generating short SFX one-shots — footsteps, weapon swings, UI clicks, hit impacts, environmental cues. Wires the resulting clip as an AudioStreamPlayer / 2D / 3D and auto-frees on finished. Trigger on "make a sword swing sound", "generate a UI click", "I need a footstep", "add a hit sound", "spawn an SFX".