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 agentmods add skills/donchitos/claude-code-game-studios/dev-storynpx skills add Donchitos/Claude-Code-Game-Studios --skill dev-storygit 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/dev-story)<a href="https://agentmods.dev/skills/donchitos/claude-code-game-studios/dev-story"><img src="https://agentmods.dev/badge/skills/donchitos/claude-code-game-studios/dev-story.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 | $0.00074 | $0.03951 |
| Opus 5 | $0.00037 | $0.01975 |
| Sonnet 5 | $0.00015 | $0.00790 |
| Haiku 4.5 | $0.00007 | $0.00395 |
Grade A, and why
dev-story 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.
How it starts
The opening of the file, as written. The whole thing — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Dev Story
This skill bridges planning and code. It reads a story file in full, assembles all the context a programmer needs, routes to the correct specialist agent, and drives implementation to completion — including writing the test.
The loop for every story:
/qa-plan sprint ← define test requirements before sprint begins
/story-readiness [path] ← validate before starting
/dev-story [path] ← implement it (this skill)
/code-review [files] ← review it
/story-done [path] ← verify and close it
After all sprint stories are done: run /team-qa sprint to execute the full QA cycle and get a sign-off verdict before advancing the project stage.
Output: Source code + test file in the project's src/ and tests/ directories.
Phase 1: Find the Story
If a path is provided: read that file directly.
If no argument: check production/session-state/active.md for the active
story. If found, confirm: "Continuing work on [story title] — is that correct?"
If not found, ask: "Which story are we implementing?" Glob
production/epics/**/*.md and list stories with Status: Ready.
Phase 2: Load Full Context
Before loading any context, verify required files exist. Extract the ADR path from the story's ADR Governing Implementation field, then check:
| File | Path | If missing |
|---|---|---|
| TR registry | docs/architecture/tr-registry.yaml |
STOP — "TR registry not found at docs/architecture/tr-registry.yaml. Run /architecture-review to bootstrap the registry from your GDDs and ADRs." |
| Governing ADR | path from story's ADR field | STOP — "ADR file [path] not found. Run /architecture-decision to create it, or correct the filename in the story's ADR field." |
| Control manifest | docs/architecture/control-manifest.md |
WARN and continue — "Control manifest not found — layer rules cannot be checked. Run /create-control-manifest." |
If the TR registry or governing ADR is missing, set the story status to BLOCKED in the session state and do not spawn any programmer agent.
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 · 326 lines · 74 tokens per session scan A ddada36350af
dev-story is a skill published in the GitHub repository Donchitos/Claude-Code-Game-Studios (24,822 stars, last pushed 3mo ago), licensed MIT. It adds 74 tokens to every session and 3,951 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 2026-09-03.
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game-qa
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