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game-build

game-build is a skill for Claude Code from fcsouza/agent-skills. It costs 60 tokens per session (2,134 once invoked), scanned A, original, GPL-3.0.

A workflow for building a game component from an existing minimum viable product plan, with TypeScript code and Vitest tests.

In plain words
What is it for?
Use it to build a planned game component with production code, tests, mocked dependencies, and registry tracking.
Why use it?
It provides a defined implementation path and tracks the component in a build registry.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the game-dev-commands plugin — 7 skills shipped together

not rated 26repo +1 22d ago A scan 60 tokens GPL-3.0

Good fit Use it to build a planned game component with production code, tests, mocked dependencies, and registry tracking.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fcsouza/agent-skills/game-build
View source ↗ fcsouza/agent-skills
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.

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

Made for: Claude Code.

Or install game-dev-commands, the plugin that ships this one along with the rest of its 7 skills.

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 game-build

README.md
[![agentmods](https://agentmods.dev/badge/skills/fcsouza/agent-skills/game-build/github.svg)](https://agentmods.dev/skills/fcsouza/agent-skills/game-build)
Your own site
<a href="https://agentmods.dev/skills/fcsouza/agent-skills/game-build"><img src="https://agentmods.dev/badge/skills/fcsouza/agent-skills/game-build/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.

agentmods 80×15 button for game-build

Your own site · 80×15
<a href="https://agentmods.dev/skills/fcsouza/agent-skills/game-build"><img src="https://agentmods.dev/badge/skills/fcsouza/agent-skills/game-build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,134 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.02134
Opus 5.5 $0.00024 $0.00854
Sonnet 5.5 $0.00012 $0.00427
Haiku 4.5 $0.00006 $0.00213

Measured 2mo ago against content hash d54f308294c1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

game-build 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.

skills/game-dev-commands/game-build/SKILL.md · 195 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 2mo ago First seen · 195 lines · 60 tokens per session scan A d54f308294c1

Subscribe to this mod's changes

game-build is a skill published in the GitHub repository fcsouza/agent-skills (26 stars, last pushed 22d ago), licensed GPL-3.0. It adds 60 tokens to every session and 2,134 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 2026-08-30.

Game developmentTestingUnit testing
Related

game-build compared with skills from other repositories

game-build next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
game-buildfcsouza/agent-skillsSkill2622d agoGPL-3.0A60Claude Code
godot-gdscript-headless-testinggamedev-skills/awesome-gamedev-agent-skillsSkill8.0ktodayApache-2.0A111Claude Code
gdunit-drivervalkor-ai/loomSkill1.5k6d agoApache-2.0A84Claude Code
unity-testabilityBesty0728/Unity-SkillsSkill1.9ktodayMITA10Claude Code, Codex
ags-adaptive-boss-arena1llu50ry/mcp-gamehackingSkill39212d agoMITA50Claude Code, Codex
unity-testingmakifbaysal/tasktrooperSkill12019d agoApache-2.0A62Claude Code, Codex
web-game-performance-and-testingmakifbaysal/tasktrooperSkill12019d agoApache-2.0A87Claude Code, Codex