unreal-mcp SKILL.md skillA
unreal-mcp from thrixel/build-world is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add thrixel/build-world/unreal-mcp@git:20260917.afac548Pins git:20260917.afac548 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- thrixel/build-world
- Path
skills/build-world/engines/unreal/EpicGames-UnrealMCP-skills/skills/unreal-mcp/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260917.afac548, committed Sep 17, 2026
- Size
- 6,890 bytes
- Repository stars
- 109
- License
- Apache-2.0
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…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Unreal MCP You are wired into a live Unreal Editor through the `unreal-mcp` MCP server. The server exposes hundreds of tools across 30+ toolsets (actors, blueprints, materials, Niagara, Sequencer, Control Rigs, GAS, automation tests, Live Coding, and more) registered through Unreal's `ToolsetRegistry`. Use it to inspect and mutate live editor state instead of telling the user to do it manually. You don't need to memorize tool names. The flow below has you discover them on demand. The connection can appear as `unreal-mcp-proxy` when the engine's optional proxy is installed. Use that connection for Unreal tools. The proxy keeps Unreal's native tool definitions; it does not introduce replacement discovery or dispatch tools. See `references/setup.md` for installation. ## First step every time: discover the tool you need, then dispatch it via `call_tool` …
Read the whole file at its exact version.
How to install
mdr add thrixel/build-world/unreal-mcp@sha256:f7ac084281c23f16The line at the top of this page pins the label git:20260917.afac548, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_pgxauhpurop6ujnm)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 17, 2026.
Audit of the latest version
- 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
thrixel/build-world · 109 stars · license Apache-2.0 · pushed 2026-10-28 · 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
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.