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 IvanMurzak/ai-game-dev-plugin --skill unreal-game-devgit clone --depth 1 https://github.com/IvanMurzak/ai-game-dev-pluginWrote 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/ivanmurzak/ai-game-dev-plugin/unreal-game-dev)<a href="https://agentmods.dev/skills/ivanmurzak/ai-game-dev-plugin/unreal-game-dev"><img src="https://agentmods.dev/badge/skills/ivanmurzak/ai-game-dev-plugin/unreal-game-dev/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/ivanmurzak/ai-game-dev-plugin/unreal-game-dev"><img src="https://agentmods.dev/badge/skills/ivanmurzak/ai-game-dev-plugin/unreal-game-dev.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 | $0.00078 | $0.02599 |
| Opus 5.5 | $0.00031 | $0.01040 |
| Sonnet 5.5 | $0.00016 | $0.00520 |
| Haiku 4.5 | $0.00008 | $0.00260 |
Grade A, and why
unreal-game-dev 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 10d 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 — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Unreal Engine — AI Game Dev runbook
This skill teaches your AI coding assistant (Claude Code, Codex, Cursor or Gemini CLI) to drive Unreal
Engine fully automatically through the unreal-mcp-cli npm package. The goal: take the user
from nothing to a running Unreal Editor that is connected to ai-game.dev
so the AI can build the game for them.
Every command runs via npx so nothing needs to be installed globally:
npx -y unreal-mcp-cli@latest <command> [args] # <command> --help shows every flag
Path syntax differs by command:
create-project,install-plugin,close,open, andinstall-extensiontake the project path as a positional argument;wait-for-ready,status,setup-mcp,setup-skills, andexectake it as-p <path>.
Prerequisites (check first)
- Node.js 20.19+ or 22.12+ —
node --version. - Unreal Engine installed (e.g. UE 5.7 via the Epic Games Launcher). The CLI drives an installed engine; it cannot install one unattended (see step 0).
- A C++ toolchain (Visual Studio on Windows, Xcode on macOS) — the scaffold is a C++ project and
opencompiles its modules before launching. - A free ai-game.dev account — the
loginstep signs this machine in. - Windows / macOS / Linux with a real desktop session (the editor opens a window).
Naming rule: an Unreal project/module name cannot contain hyphens (
-). The folder path may contain hyphens, but pass a hyphen-free--name(e.g.MyGame, notMy-Game).
The automatic end-to-end sequence
Run these in order. The one ordering rule: the editor must start after a successful
login (step 4).
0. Check the installed engines
npx -y unreal-mcp-cli@latest install-engine # list installed engines
npx -y unreal-mcp-cli@latest install-engine 5.7 # is 5.7 installed? if not, links to the Epic launcher
There is no unattended engine installer: a missing version is installed by the user through the Epic Games Launcher (a multi-GB download — confirm first).
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.
- 10d ago Changed · +31 lines · +18 tokens per session 152f63035892
- 2mo ago First seen · 163 lines · 60 tokens per session scan A 7944f4b84322
unreal-game-dev is a skill published in the GitHub repository IvanMurzak/ai-game-dev-plugin (7 stars, last pushed 8d ago), licensed Apache-2.0. It adds 78 tokens to every session and 2,599 once invoked, about $0.0003 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 2026-08-31.
unreal-game-dev compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| unreal-game-devIvanMurzak/ai-game-dev-plugin | Skill | 7 | 8d ago | Apache-2.0 | A | 78 | Claude Code, Codex |
| unity-coderDmitriyYukhanov/claude-plugins | Skill | 8 | 1mo ago | MIT | A | 27 | Claude Code |
| unity-tests-writeDmitriyYukhanov/claude-plugins | Skill | 8 | 1mo ago | MIT | A | 25 | Claude Code |
| unity-architectDmitriyYukhanov/claude-plugins | Skill | 8 | 1mo ago | MIT | A | 30 | Claude Code |
| unity-devDmitriyYukhanov/claude-plugins | Skill | 8 | 1mo ago | MIT | A | 19 | Claude Code |
| unity-tests-runDmitriyYukhanov/claude-plugins | Skill | 8 | 1mo ago | MIT | A | 20 | Claude Code |
| top-designwondelai/skills | Skill | 2.7k | today | MIT | A | 113 | Claude Code, Codex |