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 hoatv2211/GameStudio-CodexKIT --skill using-game-studio-skillsgit clone --depth 1 https://github.com/hoatv2211/GameStudio-CodexKITWrote 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/hoatv2211/gamestudio-codexkit/using-game-studio-skills)<a href="https://agentmods.dev/skills/hoatv2211/gamestudio-codexkit/using-game-studio-skills"><img src="https://agentmods.dev/badge/skills/hoatv2211/gamestudio-codexkit/using-game-studio-skills/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/hoatv2211/gamestudio-codexkit/using-game-studio-skills"><img src="https://agentmods.dev/badge/skills/hoatv2211/gamestudio-codexkit/using-game-studio-skills.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00033 | $0.01974 |
| Opus 5 | $0.00016 | $0.00987 |
| Sonnet 5 | $0.00007 | $0.00395 |
| Haiku 4.5 | $0.00003 | $0.00197 |
Grade A, and why
using-game-studio-skills 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 — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Using Game Studio Skills
Overview
Apply the kit as a workflow router: inspect context, select the narrowest skill, preserve safety gates, and label every claim honestly.
When to use
Use at the start of every kit-guided task and whenever a task changes scope, risk, owner, or verification strategy.
When NOT to use
Do not use this root contract as a substitute for intake, debugging, mutation, review, build verification, or handoff workflows.
Required inputs and context discovery
Collect the workspace and repository paths, current branch or snapshot, user goal, explicit constraints, available tools, project-profile path when present, and any do-not-touch paths.
Safety and risk level
This skill is read-only. It classifies work and routes it; it never authorizes mutation, service control, database changes, publishing, credentials, or destructive cleanup.
Repeated work strategy gate
Before execution, assess whether the selected workflow repeats the same action across records, files, or assets. Three or more similar records, files, or assets, or any high-volume set, requires an explicit choice among manual, reuse, extend, or create-tool. This threshold requires assessment; it does not justify a new tool by itself.
Prefer reuse or extension of an existing tool, converter, validator, or batch workflow. Keep a small one-off task manual when direct handling is clearer and lower risk. A new or extended tool must be deterministic, use bounded scope and bounded output, emit a manifest or structured log, validate results, and quarantine recoverable per-item failures. Mutating tools require report-only or dry-run behavior. Long-running pipelines must be resumable, and repeated operations must be idempotent or detect already completed state. Fail fast instead of quarantining when a failure invalidates shared integrity.
Group failures into a failure cluster by common cause. Repair the owning rule, converter, or pipeline and rerun the affected cluster instead of defaulting to individual record edits. Tool use does not expand authority: commit, service control, database actions, Unity mutation, publishing, credentials, and destructive actions retain the selected workflow's approval gates.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 Changed · +17 lines 6b0d447b1ea9
- 9d ago First seen · 95 lines · 33 tokens per session scan A 8af5663b8d09
using-game-studio-skills is a skill published in the GitHub repository hoatv2211/GameStudio-CodexKIT (3 stars, last pushed 2d ago), licensed MIT. It adds 33 tokens to every session and 1,974 once invoked, about $0.0002 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.
Other skills, from other repositories
deep-discovery
Use when the user asks for deep discovery, 100-question brainstorming, idea interrogation, architecture stress testing, strategy vetting, weakness finding, hole-poking, exhaustive exploration, planning or auditing Codex plugins or skills, or pre-commitment review of a design, plan, strategy, architecture, product…
prewalk
Use when the user wants a coding task executed with a strong planner model first and a faster/cheaper executor model after the first successful implementation edit.
code-standards
C# coding standards and code review. Use when the user mentions coding standards or conventions, writing code to spec, defining standards for a project, cohesion and coupling, design pattern selection, or naming conventions, or wants a code review on the design and standards dimension.
registry-broker-orchestrator
Use Registry Broker to discover and summon specialist agents for focused subtasks from inside Codex.
unity-performance
Unity performance optimization. Use when the user asks to optimize a class, view, function, folder or an entire module, or mentions stutter, lag, frame drops, low FPS, jank, overheating, battery drain, GC allocation, memory leaks, DrawCalls, batching, overdraw, slow loading, large build size, Profiler, PerfDog, or…
sega
A playful, arcade-inspired interface for games — built on the VT323 pixel typeface, hard-edged 0px corners, chunky pill buttons that physically press into solid offset blocks.