Atlas / MCP servers / winyunq / Unreal Motion Graphics

Unreal Motion GraphicsBLOCK

mcp/winyunq/unreal-motion-graphics

🚀 UE5-UMG-MCP: A deep-focused MCP for Unreal Engine UMG layout. Designed to maximize AI efficiency within limited context windows by prioritizing precision in UI structure, animations, and blueprint integration.

Verdict
BLOCK
Grade
D
Trust score
69 /100
Exposed tools
3 3r · 0w · 0d
Transport
stdio
License
MIT
Stars
206
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

中文版

UMG MCP for Unreal Engine 5.8 Build, inspect, refactor, and version UMG UI through AI agents and MCP tools.

Web Manual · Install · MCP Client · Fab Marketplace · Discord

UMG MCP turns Unreal Editor UMG work into explicit, reviewable tool calls. An AI agent can create widgets, update layout, wire Blueprint logic, edit materials, drive UMG animation, and round-trip UI files through JSON instead of relying on screenshots or fragile click automation.

The README is the front door. The step-by-step tutorials live in the deployed documentation site:

Start here Open the web manual

Repository copy Document/index.html and Document/index_zh.html

Why It Exists

Read from source at commit f2d763bc7cd4OBSERVED · 2026-10-06
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code
claude mcp add unreal-engine-mcp -- uvx unreal-engine-mcp
claude-desktop
{
  "mcpServers": {
    "unreal-engine-mcp": {
      "command": "uvx",
      "args": [
        "unreal-engine-mcp"
      ]
    }
  }
}
03

Exposed tools (3)

3 read · 0 write · 0 destructive.

ToolRiskDescription
connect_umg_mcpreadif port <= 0:
get_umg_mcp_connectionreadconn = get_unreal_connection()
list_umg_mcp_serversreadreturn {
04

Trust audit

BLOCKgrade D · trust 69/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.

LayerWhat it checksResult
L0Provenance & inventoryWARN
L1Static analysis of the codeFAIL
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (3 observation(s))
Network
none-observed
Shell
declared (1 observation(s))
Dependencies
pinned
Secrets in source
none-found

Findings (3)

HIGHCode injection · code.eval_exec · CWE-78, CWE-94, CWE-95
Resources/Python/APITest/Umg_Target_Path_Normalization_Check.py:20
exec(compile(module, str(SERVER_PATH), "exec"), namespace)
Why it matters. evaluates text as code
Fix. remove; use a parser or a dispatch table
MEDIUMInventory / provenance · inv.binary · CWE-1104
Resources/Python/__pycache__/mcp_config.cpython-310.pyc
mcp_config.cpython-310.pyc
Why it matters. a compiled or binary member cannot be reviewed from source
Fix. ship source, or explain the binary in the README
LOWInventory / provenance · inv.hidden_file · CWE-1104
.Doxyfile
.Doxyfile
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose

Gates applied: no_behavioural_pass.

Audited 2026-10-06 · audit v0.4.1 · source sha f2d763bc7cd4full audit observations/trust-audit/mcp-server/winyunq__unreal-motion-graphics.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-06f2d763bc7cd4BLOCKD69first audit
06

Questions

What is the Unreal Motion Graphics MCP server?

🚀 UE5-UMG-MCP: A deep-focused MCP for Unreal Engine UMG layout. Designed to maximize AI efficiency within limited context windows by prioritizing precision in UI structure, animations, and blueprint integration.

What tools does Unreal Motion Graphics expose?

3 in total: 3 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Unreal Motion Graphics safe to connect to an agent?

No — not without reading the findings first. The audit graded it D (69/100) and found 1 critical or high issue in the source. Each one is listed on this page with the file and line it is on.

What credentials does Unreal Motion Graphics need?

No credential environment variables were found in its source, so it appears to need none.

How does Unreal Motion Graphics run?

It speaks stdio, so it runs as a local process your client starts. It is published on PyPI as unreal-engine-mcp.

How current is this page?

The grade is for one exact copy of the source (f2d763bc7cd4), read on 2026-10-06. The repository is watched and re-audited when it changes.

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