Claude Code Game Studios is a setup that organizes Claude Code into a coordinated game-development team of specialized AI agents. It supports game projects across design, programming, art, audio, narrative, quality assurance, and production, with skills and workflows for coordinating that work.
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 skills add Donchitos/Claude-Code-Game-Studios --skill test-helpersgit clone --depth 1 https://github.com/Donchitos/Claude-Code-Game-StudiosWrote 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/donchitos/claude-code-game-studios/test-helpers)<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/test-helpers"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/test-helpers/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.
<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/test-helpers"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/test-helpers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 7 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
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 | $0.00030 | $0.04267 |
| Opus 5.5 | $0.00012 | $0.01707 |
| Sonnet 5.5 | $0.00006 | $0.00853 |
| Haiku 4.5 | $0.00003 | $0.00427 |
Grade A, and why
test-helpers scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
2 near-identical copies found in the catalogue:
- test-helpers — 97% identical, 165 lines differ
- test-helpers — 97% identical, 165 lines differ
How it starts
The opening of the file, as written. The whole thing — 474 lines — stays where its author put it; the contents beside it link to each section on GitHub.
!bash "${CLAUDE_SKILL_DIR}/../../hooks/yaml-helper.sh" resolve_config --keys automation
Automation mode: Resolve modes.automation (project.local.yaml →
project.yaml → default collaborative). Every AskUserQuestion call and
every file write follows .claude/docs/automation-modes.md
(collaborative asks always · guided major-only · autonomous logs and proceeds;
automation_always_ask categories always prompt).
Test Helpers
Writing test cases is faster and more consistent when common setup, teardown,
and assertion patterns are abstracted into helpers. This skill generates a
tests/helpers/ library tailored to the project's actual engine, language,
and systems — so every developer writes less boilerplate and more assertions.
Output: engine-specific helper files in the engine's helper root —
the only place its test runner compiles them (.claude/docs/directory-structure.md):
| Engine | Helper root |
|---|---|
| Godot | tests/helpers/ |
| Unity | Assets/Tests/EditMode/Helpers/ — inside the EditModeTests assembly /test-setup creates. If PlayMode tests need the same helpers, ask before creating Assets/Tests/Helpers/TestHelpers.asmdef and referencing it from both test assemblies. |
| Unreal | Source/<Module>/Private/Tests/Helpers/ |
tests/helpers/ below means the helper root for the project's engine.
When to run:
- After
/test-setupscaffolds the framework (first time) - When multiple test files repeat the same setup boilerplate
- When starting to write tests for a new system
Assertions: use the project's test framework, never bare assert()
Generated helpers must assert through the configured test framework's assertion
API, resolved from testing.framework — not through GDScript's built-in
assert().
Two things go wrong with a bare assert() in a helper, and both are silent:
- It aborts the run instead of failing the test. A framework assertion
records a failure and continues, so one broken expectation yields one red test.
A bare
assert()halts execution, so the first failure hides every result after it. - It is stripped in release builds. A helper library built on
assert()stops asserting entirely in exactly the build you most want checked, and does so without any error — the tests still "pass".
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.
- 4d ago Changed · +2 lines b368b009a8ab
- 24d ago Changed · +17 lines · +3 tokens per session bbf26e091df9
- 29d ago Changed 258b66511184
- 1mo ago Changed · +59 lines · -23 tokens per session 267804cc0b76
- 1mo ago First seen · 396 lines · 50 tokens per session scan A 98494481c7fe
test-helpers is a skill published in the GitHub repository Donchitos/Claude-Code-Game-Studios (27,298 stars, last pushed 5d ago), licensed MIT. It adds 30 tokens to every session and 4,267 once invoked, about $0.0001 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 2026-09-03.
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