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.
npx agentmods add skills/idocohen560/claude-unity-game-studio/quick-designnpx skills add IdoCohen560/claude-unity-game-studio --skill quick-designgit clone --depth 1 https://github.com/IdoCohen560/claude-unity-game-studioWrote 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/idocohen560/claude-unity-game-studio/quick-design)<a href="https://agentmods.dev/skills/idocohen560/claude-unity-game-studio/quick-design"><img src="https://agentmods.dev/badge/skills/idocohen560/claude-unity-game-studio/quick-design.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 | $0.00057 | $0.02234 |
| Opus 5 | $0.00028 | $0.01117 |
| Sonnet 5 | $0.00011 | $0.00447 |
| Haiku 4.5 | $0.00006 | $0.00223 |
Grade A, and why
quick-design 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 2d 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.
This is a copy
95% identical to quick-design — 31 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 275 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Quick Design
This is the lightweight design path for changes that don't need a full GDD.
Full GDD authoring via /design-system is the heavyweight path. Use this skill
for work under approximately 4 hours of implementation — tuning adjustments,
minor behavioral tweaks, small additions to existing systems, or standalone
features too small to warrant a full document.
Output: design/quick-specs/[name]-[date].md
When to run: Anytime a change is too small for /design-system but too
meaningful to implement without a written rationale.
1. Classify the Change
First, read the argument and determine which category this change falls into:
- Tuning — changing numbers or balance values in an existing system with no behavioral change (most minimal path). Example: "increase jump height from 5 to 6 units", "reduce enemy patrol speed by 10%".
- Tweak — a small behavioral change to an existing system that introduces no new states, branches, or systems. Example: "make dash invincible on frame 1", "allow combo to cancel into roll".
- Addition — adding a small mechanic to an existing system that may introduce 1-2 new states or interactions. Example: "add a parry window to the block mechanic", "add a charge variant to the basic attack".
- New Small System — a standalone feature small enough that it has no existing GDD and is under approximately one week of implementation work. Example: "achievement popup system", "simple day/night visual cycle".
If the change does NOT fit these categories — it introduces a new system with
significant cross-system dependencies, requires more than one week of
implementation, or fundamentally alters an existing system's core rules — stop
and redirect to /design-system instead.
Present the classification to the user and confirm it is correct before proceeding. If there is no argument, ask the user to describe the change.
2. Context Scan
Before drafting anything, read the relevant context:
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.
- 2d ago First seen · 275 lines · 57 tokens per session scan A 379d1ab1552c
quick-design is a skill published in the GitHub repository IdoCohen560/claude-unity-game-studio (17 stars, last pushed 1mo ago), licensed MIT. It adds 57 tokens to every session and 2,234 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to quick-design, differing in 31 lines, and is treated as a copy.
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