threejs-gameplay-systems

threejs-gameplay-systems is a skill for Codex from corosolto/client. It costs 128 tokens per session (1,250 once invoked), scanned A, original, AGPL-3.0.

A guide to building playable game systems with Three.js, a JavaScript 3D graphics library. It combines project setup, game and level design, combat, encounters, architecture, and feedback such as hit pause, screen shake, and impact effects.

In plain words
What is it for?
Use it to start a Vite, TypeScript, and Three.js game, create gameplay systems and levels, design encounters and combat, and tune moment-to-moment feedback.
Why use it?
It connects the technical structure of a game with the details that make actions feel responsive. This helps turn a prototype into a playable slice that can be iterated on.

Skill for Codex

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

Install

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.

agentmods
npx agentmods add skills/corosolto/client/threejs-gameplay-systems
Any agent
npx skills add corosolto/client --skill threejs-gameplay-systems
Clone the repo
git clone --depth 1 https://github.com/corosolto/client

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-gameplay-systems

README.md
[![agentmods](https://agentmods.dev/badge/skills/corosolto/client/threejs-gameplay-systems.svg)](https://agentmods.dev/skills/corosolto/client/threejs-gameplay-systems)
Your own site
<a href="https://agentmods.dev/skills/corosolto/client/threejs-gameplay-systems"><img src="https://agentmods.dev/badge/skills/corosolto/client/threejs-gameplay-systems.svg" alt="Measured on agentmods" height="20"></a>
Per session 128 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,250 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00128 $0.01250
Opus 5 $0.00064 $0.00625
Sonnet 5 $0.00026 $0.00250
Haiku 4.5 $0.00013 $0.00125

Measured 6d ago against content hash b907ece2e2f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

threejs-gameplay-systems 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.

The scan reads SKILL.md. This mod also ships 22 executable files (assets/threejs-vite-game/playwright.config.ts, assets/threejs-vite-game/scripts/inspect-threejs-canvas.mjs, assets/threejs-vite-game/src/core/InputController.ts, …), 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-gameplay-systems/SKILL.md · 79 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

38 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. 6d ago First seen · 79 lines · 128 tokens per session scan A b907ece2e2f3

Subscribe to this mod's changes

threejs-gameplay-systems is a skill published in the GitHub repository corosolto/client (240 stars, last pushed 2d ago), licensed AGPL-3.0. It adds 128 tokens to every session and 1,250 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.