prototype

prototype is a skill for Claude Code, Codex from ivala2081/vibe-game. It costs 76 tokens per session (2,329 once invoked), scanned A, original, no licence file.

A tool for building a playable scene in Unity, a game-development platform, from a brief describing the intended action and gameplay loop. It adapts generated code to the project's existing input, graphics, camera, and controller setup.

In plain words
What is it for?
Use it after starting a Vibe Brief, or whenever you need a playable Unity scene that demonstrates its main action and gameplay loop.
Why use it?
It helps turn a gameplay concept into a working Unity scene without requiring a generic project template or manual matching of the project's technical setup.

Skill for Claude CodeCodex

Part of the vibe-game plugin — 11 skills, 4 agents, 2 hooks shipped together

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/ivala2081/vibe-game/prototype
Any agent
npx skills add ivala2081/vibe-game --skill prototype
Clone the repo
git clone --depth 1 https://github.com/ivala2081/vibe-game

Made for: Claude Code, Codex.

Or install vibe-game, the plugin that ships this one along with the rest of its 11 skills, 4 agents, 2 hooks.

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 prototype

README.md
[![agentmods](https://agentmods.dev/badge/skills/ivala2081/vibe-game/prototype.svg)](https://agentmods.dev/skills/ivala2081/vibe-game/prototype)
Your own site
<a href="https://agentmods.dev/skills/ivala2081/vibe-game/prototype"><img src="https://agentmods.dev/badge/skills/ivala2081/vibe-game/prototype.svg" alt="Measured on agentmods" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,329 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 $0.00076 $0.02329
Opus 5 $0.00038 $0.01164
Sonnet 5 $0.00015 $0.00466
Haiku 4.5 $0.00008 $0.00233

Measured 4d ago against content hash 78613d3e3694, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

prototype 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 4d 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.

skills/prototype/SKILL.md · 187 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 4d ago First seen · 187 lines · 76 tokens per session scan A 78613d3e3694

Subscribe to this mod's changes

prototype is a skill published in the GitHub repository ivala2081/vibe-game (4 stars, last pushed 3mo ago), with no licence file. It adds 76 tokens to every session and 2,329 once invoked, about $0.0004 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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