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.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 5.1 | $0.00060 | $0.01867 |
| Opus 5 | $0.00030 | $0.00933 |
| Sonnet 5 | $0.00012 | $0.00373 |
| Haiku 4.5 | $0.00006 | $0.00187 |
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 7d 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 — 163 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 or Codex 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]
Prerequisites (check first)
- Node.js 18+ —
node --version. - Unreal Engine installed (e.g. UE 5.7 via the Epic Games Launcher). The CLI drives the installed editor; it does not download the engine.
- A free ai-game.dev account — the
loginstep authorizes the project against the cloud. - 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. Do not skip the ordering rule around close → login → open.
1. Create the project (fresh start only)
Skip this step if the user already has a project — go straight to step 2 pointing at it.
npx -y unreal-mcp-cli@latest create-project "C:/Games/MyGame" --name MyGame --engine 5.7
create-project <path>scaffolds a new Unreal project at<path>.--name <Name>sets the project/module name (no hyphens).--engine <ver>picks the installed engine version (e.g.5.7).
Verify: the <path> now contains a <Name>.uproject file.
2. Install the Unreal-MCP plugin
npx -y unreal-mcp-cli@latest install-plugin "C:/Games/MyGame"
Installs the Unreal-MCP editor plugin into the project so the editor can expose its tools to
the cloud AI. Verify: a Plugins/UnrealMCP folder now exists in the project.
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.
- 7d 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 (3 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 60 tokens to every session and 1,867 once invoked, about $0.0003 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.
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