What is tinyworld-single-file?

A project-specific editing guide for Tiny World Builder, a single-file web app that uses Three.js to display 3D scenes. It helps preserve the app's single-file structure and local edit-and-reload workflow.

Use it when editing the Tiny World Builder repository, especially its main HTML file.

It reduces the chance that changes split up or disrupt a project designed to live in one HTML file. The description does not specify additional features.

How yunyang088/tiny-world-builder configures Codex

Reuse

Borrowing it

Nothing to install: this file belongs to yunyang088/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/yunyang088/tiny-world-builder/main/.codex/skills/tinyworld-single-file/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/yunyang088/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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/yunyang088/tiny-world-builder/tinyworld-single-file/github.svg)](https://agentmods.dev/skills/yunyang088/tiny-world-builder/tinyworld-single-file)

Your own site

<a href="https://agentmods.dev/skills/yunyang088/tiny-world-builder/tinyworld-single-file"><img src="https://agentmods.dev/badge/skills/yunyang088/tiny-world-builder/tinyworld-single-file/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/yunyang088/tiny-world-builder/tinyworld-single-file"><img src="https://agentmods.dev/badge/skills/yunyang088/tiny-world-builder/tinyworld-single-file.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 399 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00038	$0.00399
Opus 5.5	$0.00015	$0.00160
Sonnet 5.5	$0.00008	$0.00080
Haiku 4.5	$0.00004	$0.00040

Measured 2mo ago against content hash 1d0f77e059b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tinyworld-single-file 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.

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.

.codex/skills/tinyworld-single-file/SKILL.md · 26 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

1 file 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.

agents/openai.yaml 201 B

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.

2mo ago First seen · 26 lines · 38 tokens per session scan A 1d0f77e059b0

Subscribe to this mod's changes

tinyworld-single-file is a skill published in the GitHub repository yunyang088/tiny-world-builder (5 stars, last pushed 5mo ago), licensed AGPL-3.0. It adds 38 tokens to every session and 399 once invoked, about $0.0002 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 2026-08-31.

Game development

tinyworld-single-file next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
tinyworld-single-fileyunyang088/tiny-world-builder	Skill	5	5mo ago	AGPL-3.0	A	38	Codex
playtest-reportDonchitos/Claude-Code-Game-Studios	Skill	37k	20d ago	MIT	A	20	Claude Code
godot-signals-groupsgamedev-skills/awesome-gamedev-agent-skills	Skill	7.8k	11d ago	Apache-2.0	A	95	Claude Code
texture-workflowarjun988/blender-skills	Skill	2.2k	2d ago	MIT	A	41	Claude Code
scenario-unreal-gameplayscenario-labs/skills	Skill	3.5k	yesterday	MIT	A	121	Claude Code
motionOpenDCAI/GameFactory-3A	Skill	1.0k	10d ago	Apache-2.0	A	0	Claude Code, Codex
unity-addressablesBesty0728/Unity-Skills	Skill	1.9k	today	MIT	A	25	Claude Code, Codex

tiny-world-builder: Skill for Codex