agentmods.dev

tiny-world-builder: Skill for Codex

.agents/skills/threejs-primitive-reconstructor/SKILL.md

threejs-primitive-reconstructor is a skill for Codex from jasonkneen/tiny-world-builder. It costs 81 tokens per session (1,036 once invoked), scanned A, original, AGPL-3.0.

A skill for producing a standalone HTML file containing a Three.js 3D scene from a low-poly, voxel, isometric, or stylized reference image. Three.js is a JavaScript library for displaying 3D graphics in web pages.

In plain words
What is it for?
Use it to recreate stylized 3D scenes as Three.js HTML files.
Why use it?
It helps turn a visual reference into a usable single-file web scene when the source image does not provide the 3D structure directly.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

This is jasonkneen/tiny-world-builder's own configuration. It tells Codex how to work on tiny-world-builder 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 tiny-world-builder configures →

not rated 1.6krepo +4 yesterday A scan SkillSpector: pass 81 tokens AGPL-3.0
View source ↗ jasonkneen/tiny-world-builder tinyworld.build
About the project

Tiny World Builder is a browser-based 3D voxel editor for creating, sculpting, exploring, saving, remixing, exporting, and sharing small block-based worlds. It is used by people who want to build terrain and scenes with objects such as homes, paths, crops, and animals. Its catalogue add-ons support work with the editor.

jasonkneen/tiny-world-builder · 1,621 stars · on GitHub · tinyworld.build

Reuse

Borrowing it

Nothing to install: this file belongs to jasonkneen/tiny-world-builder. 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/jasonkneen/tiny-world-builder/main/.agents/skills/threejs-primitive-reconstructor/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/jasonkneen/tiny-world-builder

Made for: Codex.

Wrote 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.

agentmods badge for threejs-primitive-reconstructor

README.md
[![agentmods](https://agentmods.dev/badge/skills/jasonkneen/tiny-world-builder/threejs-primitive-reconstructor/github.svg)](https://agentmods.dev/skills/jasonkneen/tiny-world-builder/threejs-primitive-reconstructor)
Your own site
<a href="https://agentmods.dev/skills/jasonkneen/tiny-world-builder/threejs-primitive-reconstructor"><img src="https://agentmods.dev/badge/skills/jasonkneen/tiny-world-builder/threejs-primitive-reconstructor/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.

agentmods 80×15 button for threejs-primitive-reconstructor

Your own site · 80×15
<a href="https://agentmods.dev/skills/jasonkneen/tiny-world-builder/threejs-primitive-reconstructor"><img src="https://agentmods.dev/badge/skills/jasonkneen/tiny-world-builder/threejs-primitive-reconstructor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,036 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin unknown 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 $0.00081 $0.01036
Opus 5.5 $0.00032 $0.00414
Sonnet 5.5 $0.00016 $0.00207
Haiku 4.5 $0.00008 $0.00104

Measured 2mo ago against content hash fcb0a1791844, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

threejs-primitive-reconstructor 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/write_scene_from_template.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.agents/skills/threejs-primitive-reconstructor/SKILL.md · 78 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

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.

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 · 78 lines · 81 tokens per session scan A fcb0a1791844

Subscribe to this mod's changes

threejs-primitive-reconstructor is a skill published in the GitHub repository jasonkneen/tiny-world-builder (1,621 stars, last pushed yesterday), licensed AGPL-3.0. It adds 81 tokens to every session and 1,036 once invoked, about $0.0003 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 2026-08-30.

FrontendGame developmentbuildminecraftvoxel
Related

threejs-primitive-reconstructor compared with skills from other repositories

threejs-primitive-reconstructor next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
threejs-primitive-reconstructorjasonkneen/tiny-world-builderSkill1.6kyesterdayAGPL-3.0A81Codex
minecraft-modpack-serverNousResearch/hermes-agentSkill261kyesterdayMITB19Claude Code, Codex
gamedev-shippingericrisco/rsc-harnessSkill5032d agoMITA99Claude Code, Codex
mc-script-apiguguzea/MC-AI-Coding-Assistant-ToolSkill132yesterdaynoneA23Claude Code, Codex
mc-addon-manifestguguzea/MC-AI-Coding-Assistant-ToolSkill132yesterdaynoneA27Claude Code, Codex
mc-addon-setupguguzea/MC-AI-Coding-Assistant-ToolSkill132yesterdaynoneA35Claude Code, Codex
mc-bedrock-block-itemguguzea/MC-AI-Coding-Assistant-ToolSkill132yesterdaynoneA30Claude Code, Codex