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 linegel/threejs-complete-set-of-skill --skill threejs-procedural-creaturesgit clone --depth 1 https://github.com/linegel/threejs-complete-set-of-skillWrote 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/linegel/threejs-complete-set-of-skill/threejs-procedural-creatures)<a href="https://agentmods.dev/skills/linegel/threejs-complete-set-of-skill/threejs-procedural-creatures"><img src="https://agentmods.dev/badge/skills/linegel/threejs-complete-set-of-skill/threejs-procedural-creatures/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/linegel/threejs-complete-set-of-skill/threejs-procedural-creatures"><img src="https://agentmods.dev/badge/skills/linegel/threejs-complete-set-of-skill/threejs-procedural-creatures.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 | $0.00038 | $0.02235 |
| Opus 5 | $0.00019 | $0.01118 |
| Sonnet 5 | $0.00008 | $0.00447 |
| Haiku 4.5 | $0.00004 | $0.00224 |
Grade A, and why
threejs-procedural-creatures 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 — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Procedural Creatures
Build a creature as a compiler: a dimensioned spec produces stable body, rig,
pose, and population identities; runtime work advances only selected state. The
canonical path uses Three.js r185 WebGPURenderer, TSL, NodeMaterial, and
workload-selected storage. Imported skinned animation assets are a separate
pipeline rather than an extension of this skill.
1. Define the body contract
Name the requested observable, closest/farthest projected extent, morphology envelope, pose/topology update frequency, visible population, target adapter, world units/frame, final-output owner, and any habitat/support/water/weather providers.
Classify the request into one or more branches:
| Branch | Creature owns |
|---|---|
| generated body | spec, field or segment compiler, shipping surface, materials |
| rig/locomotion | semantic slots, local pose, fixed-step or analytic motion, support-relative targets |
| repeated population | compatible geometry/material identities, pose pages, bounds, culling, LOD |
This step is complete when every requested observable has one owner, every external input names its producer and sampling contract, and the topology, pose, and population change regimes are explicit.
2. Select the shipping representation
Choose from connectivity, deformation, reuse, and projected error:
| Workload | Representation | Required proof |
|---|---|---|
| fixed connectivity with changing pose | one extracted reference mesh plus validated skinning | topology, weights, deformation, bidirectional surface error |
| fixed connectivity with bounded morphology change | reference mesh, skinning, optional bounded local field correction | full-envelope Jacobian, inversion, correction and surface error |
| components may merge, split, open, or close | budgeted dynamic extraction or explicit unsupported result | topology events, cadence, transition and complete mesh validity |
| body is visibly separate rigid plates/links | closed articulated segment hierarchy | closed geometry, joint gaps/limits, transform parity |
| many bodies share topology | shared geometry/material plus fixed pose pages | compatible identity, dirty traffic, bounds and visible submission |
| small projected body | simplified mesh or orientation-aware impostor | view-cone silhouette error and transition hysteresis |
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 204 lines · 38 tokens per session scan A 0d7ad22a33a0
threejs-procedural-creatures is a skill published in the GitHub repository linegel/threejs-complete-set-of-skill (6 stars, last pushed 1mo ago), licensed ISC. It adds 38 tokens to every session and 2,235 once invoked, about $0.0002 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 2026-08-31.
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