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.
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.
curl -O https://raw.githubusercontent.com/jasonkneen/tiny-world-builder/main/.codex/skills/tinyworld-opacity-torch/SKILL.mdgit clone --depth 1 https://github.com/jasonkneen/tiny-world-builderWrote 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/jasonkneen/tiny-world-builder/tinyworld-opacity-torch)<a href="https://agentmods.dev/skills/jasonkneen/tiny-world-builder/tinyworld-opacity-torch"><img src="https://agentmods.dev/badge/skills/jasonkneen/tiny-world-builder/tinyworld-opacity-torch.svg" alt="Measured on agentmods" 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 | $0.00037 | $0.01463 |
| Opus 5 | $0.00018 | $0.00732 |
| Sonnet 5 | $0.00007 | $0.00293 |
| Haiku 4.5 | $0.00004 | $0.00146 |
Grade A, and why
tinyworld-opacity-torch 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 6d 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.
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.
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.
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.
- 6d ago First seen · 104 lines · 37 tokens per session scan A 6ec5eba42c51
tinyworld-opacity-torch is a skill published in the GitHub repository jasonkneen/tiny-world-builder (1,554 stars, last pushed today), licensed AGPL-3.0. It adds 37 tokens to every session and 1,463 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 2026-08-30.
Other skills, from other repositories
minecraft-modpack-server
Host modded Minecraft servers (CurseForge, Modrinth).
gamedev-shipping
Use when exporting, packaging, signing, or publishing a game — export presets per engine, macOS notarization, cross-origin isolation for threaded web builds, Android AAB/keystore, iOS provisioning, store submission (Steam, Play, App Store, itch.io), headless build CI. NOT gameplay code inside the artifact (that is…
ashfox
Create, edit, review, animate, and export game-ready low-poly assets in the ashfox web workbench through an AI agent. Use for low-poly modeling, deterministic textures and UVs, rigs, idle or motion animation, GLB, Bedrock, or GeckoLib exports, and Blockbench-free asset production.
img2blockbench
Reconstruct a Minecraft-style creature, character, prop, or vehicle concept as a native Blockbench model using an optional provider-selected 3D mesh, agent vision, and deterministic compilation. Use when Codex should turn PNG, JPEG, or WebP artwork, optionally accompanied by a textured GLB or GLTF from any image-to-3D…
setup-fabric
Step 1 of 4 of the Minecraft Java MCP setup. Install Minecraft Java Edition with the Fabric loader — either a single-player client or a headless dedicated server — as the foundation the MCP mod runs inside. Use when the user wants to set up Minecraft Java for AI/MCP control from scratch, or asks how to get Fabric…
setup-mod
Step 2 of 4 of the Minecraft Java MCP setup. Download the minecraft-java MCP mod jar and its matching Fabric API jar and install both into the Minecraft mods folder. Use when the user has Minecraft Java with the Fabric loader ready and needs the MCP mod and Fabric API installed.