thrixel/build-world · skills/build-world/engines/unreal/EpicGames-UnrealMCP-skills/skills/unreal-mcp/SKILL.md

unreal-mcp skillA

unreal-mcp is agent-read markdown (skill) from thrixel/build-world: Use this skill to perform actions inside an Unreal Engine project via a live-editor MCP connection. Trigger when the user wants to change, query, or run something in their Unreal Engine project, not for conceptual or docs questions. Concrete triggers: spawn/move/duplicate/transform actors in a level, open a `.uproject`, add things around a PlayerStart, create or edit a Blueprint/Widget/Material/Niagara/Control Rig/Sequencer/Behavior Tree/GAS ability, read or write properties on actors (e.g. `bIs.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add thrixel/build-world/unreal-mcp@git:20260917.afac548
Exact content
mdr add thrixel/build-world/unreal-mcp@sha256:f7ac084281c23f16

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_pgxauhpurop6ujnm.svg)](https://markdownregistry.com/a/art_pgxauhpurop6ujnm)

0 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260917.afac548 latest2026-09-17 afac548 6,890 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (6890 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

thrixel/build-world · 73 stars · license Apache-2.0 · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_pgxauhpurop6ujnm
GET https://markdownregistry.com/api/v1/resolve?ref=thrixel/build-world/unreal-mcp
GET https://markdownregistry.com/api/v1/blob/f7ac084281c23f1672d10c0259aa07067d564d763f1e95ada8bf76aa03dd34a6