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.
curl -O https://raw.githubusercontent.com/kamwoh/yume/master/.claude/skills/yume-create-scene/SKILL.mdgit clone --depth 1 https://github.com/kamwoh/yumeWrote 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/kamwoh/yume/yume-create-scene)<a href="https://agentmods.dev/skills/kamwoh/yume/yume-create-scene"><img src="https://agentmods.dev/badge/skills/kamwoh/yume/yume-create-scene/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/kamwoh/yume/yume-create-scene"><img src="https://agentmods.dev/badge/skills/kamwoh/yume/yume-create-scene.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 | $0.00123 | $0.02955 |
| Opus 5 | $0.00062 | $0.01477 |
| Sonnet 5 | $0.00025 | $0.00591 |
| Haiku 4.5 | $0.00012 | $0.00296 |
Grade A, and why
yume-create-scene 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 11d 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 — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/yume-create-scene
You are the orchestrator for Yume's text-to-3D-world pipeline. Given a prose scene pitch, you produce a runnable scene by authoring the one LLM-in-the-loop input (the class catalog) and then running the deterministic orchestrator.
The pipeline (what compose_scene chains)
prose + catalog
├─ 1. HERO reference openai text→image (the art-direction anchor)
├─ 2. ORTHOGRAPHIC top-down openai /edits on HERO (hero-conditioned: one style)
├─ 3. SEMANTIC map openai /edits on ORTHO (flat-colour classification)
├─ 4. HEIGHTMAP openai /edits on ORTHO (grayscale elevation)
├─ 5. compose_world (SCENE only: defs + flat placements in
│ entities/auto_gen.json, biome ground, water)
│ └─ extraction: generic strategy dispatch, OR a per-scene
│ authored `data/<game>/extract.py` if present (see § Per-scene
│ extractor)
├─ 6. compose_shell (FLAT shell: camera/player/input/lighting/.tscn,
│ singletons in entities/shell_singletons.json)
└─ 7. [--assets] yume_assetgen (Tripo .glb for asset_source:tripo classes)
Every stage after the catalog is deterministic — your job is the catalog + running the tool + the visual-qa loop.
Scene-only + flat (ADR 0067). compose_world is the scene layer — it
writes ONLY the 3D environment (scene.json, entities/auto_gen.json with
defs + flat initial_instances, biome ground, water, road graph, terrain
assets). It writes no game/flow.json, no levels/, no
world/state.json (those are game-domain). The scene boots FLAT — the engine
globs entities/*.json; world_boot._load_content's else-branch needs no
flow.json. compose_shell then writes its singletons to a flat
entities/shell_singletons.json. Keeping the scene in its own lane is what
lets /yume-design --scene reuse compose_world as the World layer without a
clobber (see § Used as the World layer below).
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.
- 11d ago First seen · 211 lines · 123 tokens per session scan A e2318faafe4e
yume-create-scene is a skill published in the GitHub repository kamwoh/yume (21 stars, last pushed 2mo ago), licensed MIT. It adds 123 tokens to every session and 2,955 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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