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Agent skill

Unreal Development

by CoWork-OS in CoWork-OS/CoWork-OS

Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging.

MITAuto-check passedGame Development

Install Unreal Development

skills CLI
$ npx skills add CoWork-OS/CoWork-OS --skill unreal-development -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install CoWork-OS/CoWork-OS unreal-development --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/CoWork-OS/CoWork-OS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/resources/skills/unreal-development .claude/skills/unreal-development && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
unreal-development
GitHub stars
477
Token cost
~446 tokens
SKILL.md length
194 words
Files
3 (incl. scripts, references)
Skills in repo
46
Repo updated
First seen
Licence
MIT

At a glance

Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging.

  • Tasks that involve Game development
  • SKILL.md covers Purpose, Routing, Trigger Examples and Runtime Prompt

What it does

Unreal Development is an agent skill from CoWork-OS/CoWork-OS. Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging.

Its SKILL.md is about 450 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including scripts and reference files (for example `references/full-guidance.md`).

It sits in Game Development, covering Game development. It works with Unreal Engine, C++ and Godot. The repository describes itself as: Local-first personal agentic OS and everything app for coding, knowledge work, web design, automations, and artifacts. The licence is MIT.

When your agent uses it

  • Tasks that involve Game development

Example prompts

  • “/unreal-development”

What it can do on your machine

Read from SKILL.md and the folder at commit 0ace02b. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/, which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Unreal Development loads about 446 tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 35 tokens; SKILL.md has 194 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~35
When it runs · the whole SKILL.md, loaded when a task matches
~446
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from CoWork-OS/CoWork-OS at commit 0ace02b, republished under its MIT licence (© CoWork-OS). 194 words, ~446 tokens.

Download SKILL.mdSave it as .claude/skills/unreal-development/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
unreal-development
description
Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging.
version
1.0.0
metadata.author
CoWork OS Contributors <info@coworkosapp.com>

Unreal Engine Development

Purpose

Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging.

Routing

  • Use when: Use when the user asks about Unreal Engine, UE5, C++ game development, Blueprints, Gameplay Framework, Niagara, Lumen, Nanite, multiplayer replication, or Unreal packaging.
  • Do not use when: Do not use for Unity (use unity-development), Godot (use the game pack's godot skill), or cross-engine performance (use game-performance).
  • Outputs: C++ code, Blueprint guidance, Unreal build commands, and UE development patterns.
  • Success criteria: Returns valid Unreal C++ code or UE workflow guidance.

Trigger Examples

Positive
  • Use the unreal-development skill for this request.
  • Help me with unreal engine development.
  • Use when the user asks about Unreal Engine, UE5, C++ game development, Blueprints, Gameplay Framework, Niagara, Lumen, Nanite, multiplayer replication, or Unreal packaging.
  • Unreal Engine Development: provide an actionable result.
Negative
  • Do not use for Unity (use unity-development), Godot (use the game pack's godot skill), or cross-engine performance (use game-performance).
  • Do not use unreal-development for unrelated requests.
  • This request is outside unreal engine development scope.
  • This is conceptual discussion only; no tool workflow is needed.

Runtime Prompt

  • Current runtime prompt length: 873 characters.
  • Runtime prompt is defined directly in ../unreal-development.json.

© CoWork-OS, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (scripts, references) in resources/skills/unreal-development of CoWork-OS/CoWork-OS.

  • SKILL.md
  • references/full-guidance.md
  • scripts/.gitkeep

Open the folder on GitHubat commit 0ace02b

Compare with similar skills

Unreal Development next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Unreal Development compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Unreal Development this skillCoWork-OS/CoWork-OS477—~446Automated safety check: PassMIT
Unrealericrisco/rsc-harness180—~4kAutomated safety check: PassMIT
Unreal Engine MCPEpicGames/unreal-engine-skills-for-claude-code-plugin338—~1.8kAutomated safety check: PassMIT
Gdextension Hygienemicrosoft/XBOX-Godot-Sample237—~983Automated safety check: PassMIT
Unreal Actor-Component Architecturequodsoler/unreal-engine-skills362—~7.5kAutomated safety check: PassMIT
Unreal Engine Animation Systemquodsoler/unreal-engine-skills362—~7kAutomated safety check: PassMIT

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Works with

Categories

Questions about Unreal Development

What does Unreal Development do?

Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging. Unreal Development is an agent skill from CoWork-OS/CoWork-OS. Unreal Engine development: C++/Blueprint patterns, Gameplay Framework, Niagara, Lumen/Nanite, multiplayer, and packaging.

When should I use Unreal Development?

Unreal Development fits situations like: tasks that involve Game development.

How do I install Unreal Development in Claude Code?

Run `npx skills add CoWork-OS/CoWork-OS --skill unreal-development -a claude-code`. Or copy the skill folder (resources/skills/unreal-development in CoWork-OS/CoWork-OS) into .claude/skills/unreal-development in your project. Claude Code loads it when a task matches its description.

How do I install Unreal Development in Codex?

Run `npx skills add CoWork-OS/CoWork-OS --skill unreal-development -a codex`. Or copy the skill folder (resources/skills/unreal-development in CoWork-OS/CoWork-OS) into .agents/skills/unreal-development in your project. Codex loads it when a task matches its description.

Can I use Unreal Development in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add CoWork-OS/CoWork-OS --skill unreal-development -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/unreal-development, .gemini/skills/unreal-development, .github/skills/unreal-development and .opencode/skills/unreal-development in your project.

What does Unreal Development need to run?

SKILL.md names no scripts, command-line tools or credentials: Unreal Development is instructions for the agent only.

Does Unreal Development access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Unreal Development safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Unreal Development use?

Unreal Development is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Unreal Development use?

About 446 tokens (SKILL.md is roughly 1.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.7k tokens, read only when the agent opens those files.

What are the alternatives to Unreal Development?

Skills that share tags, products or a category with Unreal Development: Unreal (ericrisco/rsc-harness, 180 stars), Unreal Engine MCP (EpicGames/unreal-engine-skills-for-claude-code-plugin, 338 stars), Gdextension Hygiene (microsoft/XBOX-Godot-Sample, 237 stars) and Unreal Actor-Component Architecture (quodsoler/unreal-engine-skills, 362 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Unreal Development?

CoWork-OS (a GitHub organization) maintains it in CoWork-OS/CoWork-OS, which has 477 GitHub stars. The repository holds 46 skills in this directory. The repository was last updated on October 9, 2026.

Source: CoWork-OS/CoWork-OS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.