Agent skill

Unreal Engine MCP Overview

by flopperam in flopperam/unreal-engine-mcp

Maps the tools of the Flopperam Unreal Engine MCP server and how to choose among them when working with a live Unreal Editor.

No licenceAuto-check passedGame Development

Install Unreal Engine MCP Overview

skills CLI
$ npx skills add flopperam/unreal-engine-mcp --skill unreal-mcp-overview -a claude-code

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

GitHub CLI
$ gh skill install flopperam/unreal-engine-mcp unreal-mcp-overview --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/flopperam/unreal-engine-mcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/unreal-mcp-overview .claude/skills/unreal-mcp-overview && 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-mcp-overview
GitHub stars
1.1k
Token cost
~1.7k tokens
SKILL.md length
672 words
Files
1
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

Maps the tools of the Flopperam Unreal Engine MCP server and how to choose among them when working with a live Unreal Editor.

  • Works in 3 steps: Orient — bp_brief, scene_brief,… → Execute — use the appropriate domain tools → Verify — re-read with inspect tools, run…
  • Connecting to a running Unreal Editor for the first time
  • SKILL.md covers Intent Classification, Tool Categories, Core Workflow and Efficiency Rules, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

This server controls a live Unreal Editor over WebSocket, so every tool acts on the running editor. A connection error usually means the editor is not running or the FlopAI plugin is not loaded. The overview is meant for the first connection, for picking the right tool for a task, and for answering what the server can do.

Before calling anything, the agent classifies the request: a question gets an answer from knowledge, with read-only tools only if specifics are needed; an inspection uses read-only tools and changes nothing; a modification follows an observe, execute, verify loop. When intent is unclear it answers rather than modifies.

Tools are grouped by area. Scene and level tools query, compose and inspect actors, levels, assets and project context. Read-only Blueprint tools give an overview, batched queries and a full export, while Blueprint authoring tools, marked paid tier, create classes, variables, components, graphs and nodes, wire them, and compile with a health report. Further groups such as materials are cut off in the supplied text.

When your agent uses it

  • Connecting to a running Unreal Editor for the first time
  • Deciding which MCP tool handles a scene, asset or Blueprint task
  • Answering what the Unreal MCP server is able to do

Example prompts

  • “I just connected to my Unreal Editor. Which tools can inspect the current level?”
  • “Which MCP tool should I use to find every actor near the player start?”
  • “What can the Blueprint tools do without a paid tier?”

Requirements

  • A running Unreal Editor with the FlopAI plugin loaded
  • The Flopperam Unreal Engine MCP server connected

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Orient — bp_brief, scene_brief, search_assets, or project_context
  2. Execute — use the appropriate domain tools
  3. Verify — re-read with inspect tools, run PIE test for runtime behavior

What it can do on your machine

Read from SKILL.md and the folder at commit b1b495b. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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 Engine MCP Overview loads about 1.7k tokens when it runs. Until then it costs about 70 tokens; SKILL.md has 672 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~70
When it runs · the whole SKILL.md, loaded when a task matches
~1.7k

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); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 672 words (~1,664 tokens).

“This MCP server controls a live Unreal Editor instance over WebSocket. Every tool operates on the running editor — if a tool returns a connection error, the editor may not be running or the FlopAI plugin is not loaded.”

— opening of SKILL.md by flopperam
name
unreal-mcp-overview

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/unreal-mcp-overview of flopperam/unreal-engine-mcp.

Open the folder on GitHubat commit b1b495b

Compare with similar skills

Unreal Engine MCP Overview 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 Engine MCP Overview compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Unreal Engine MCP Overview this skillflopperam/unreal-engine-mcp1.1k—~1.7kAutomated safety check: PassNone
Unreal Engine MCPEpicGames/unreal-engine-skills-for-claude-code-plugin338—~1.8kAutomated safety check: PassMIT
Vibeuekevinpbuckley/VibeUE730—~5.2kAutomated safety check: PassMIT
Unreal MCPLuciole-Studio/Misaka-Agent1711 repos~3.5kAutomated safety check: PassMIT
UMG MCP Authoringwinyunq/UnrealMotionGraphicsMCP210—~2.6kAutomated safety check: PassMIT
MCP DriverRandallLiuXin/GodotMaker5501 repos~1.1kAutomated safety check: PassCustom licence

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More from flopperam/unreal-engine-mcp

  • Unreal Blueprint Authoring

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  • Unreal Scene Building

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    Guides scene and world building in Unreal Engine through the Flopperam MCP: placing actors, sculpting landscapes, scattering foliage, editing materials and verifying the level.

    1.1k GitHub stars~1.4k tokensUpdated 3 mo ago
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Questions about Unreal Engine MCP Overview

What does Unreal Engine MCP Overview do?

Maps the tools of the Flopperam Unreal Engine MCP server and how to choose among them when working with a live Unreal Editor. This server controls a live Unreal Editor over WebSocket, so every tool acts on the running editor. A connection error usually means the editor is not running or the FlopAI plugin is not loaded.

When should I use Unreal Engine MCP Overview?

Unreal Engine MCP Overview fits situations like: connecting to a running Unreal Editor for the first time; deciding which MCP tool handles a scene, asset or Blueprint task; answering what the Unreal MCP server is able to do.

How do I install Unreal Engine MCP Overview in Claude Code?

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

How do I install Unreal Engine MCP Overview in Codex?

Run `npx skills add flopperam/unreal-engine-mcp --skill unreal-mcp-overview -a codex`. Or copy the skill folder (skills/unreal-mcp-overview in flopperam/unreal-engine-mcp) into .agents/skills/unreal-mcp-overview in your project. Codex loads it when a task matches its description.

Can I use Unreal Engine MCP Overview 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 flopperam/unreal-engine-mcp --skill unreal-mcp-overview -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-mcp-overview, .gemini/skills/unreal-mcp-overview, .github/skills/unreal-mcp-overview and .opencode/skills/unreal-mcp-overview in your project.

What does Unreal Engine MCP Overview need to run?

SKILL.md names no scripts, command-line tools or credentials: Unreal Engine MCP Overview is instructions for the agent only. Our summary lists: A running Unreal Editor with the FlopAI plugin loaded; The Flopperam Unreal Engine MCP server connected.

Does Unreal Engine MCP Overview 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 Engine MCP Overview 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. Review the folder before installing.

What licence does Unreal Engine MCP Overview use?

No licence was found for Unreal Engine MCP Overview or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Unreal Engine MCP Overview use?

About 1.7k tokens (SKILL.md is roughly 6.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Unreal Engine MCP Overview?

Skills that share tags, products or a category with Unreal Engine MCP Overview: Unreal Engine MCP (EpicGames/unreal-engine-skills-for-claude-code-plugin, 338 stars), Vibeue (kevinpbuckley/VibeUE, 730 stars), Unreal MCP (Luciole-Studio/Misaka-Agent, 171 stars) and UMG MCP Authoring (winyunq/UnrealMotionGraphicsMCP, 210 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Unreal Engine MCP Overview?

flopperam (a GitHub organization) maintains it in flopperam/unreal-engine-mcp, which has 1,094 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on June 26, 2026.

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