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

skill-authoring skillA

skill-authoring is agent-read markdown (skill) from thrixel/build-world: Use this skill when creating, editing, or reviewing an Unreal Engine Agent Skill, a named bundle of instructions registered with the unreal-mcp server (distinct from Claude Code's harness skills under `.claude/skills/`). Trigger when the user wants to add or change a skill that the in-editor agent will load. Concrete triggers: 'create a new Agent Skill', 'add a skill for X workflow', 'edit/update this skill', 'review my skill', 'make a Python skill class', 'create a skill UAsset', 'register a sk.

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/skill-authoring@git:20260917.afac548
Exact content
mdr add thrixel/build-world/skill-authoring@sha256:372a41d5e9da020e

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_zig6awoirt3ctxb7.svg)](https://markdownregistry.com/a/art_zig6awoirt3ctxb7)

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Versions

versioncommittedcommitsizeaudit
git:20260917.afac548 latest2026-09-17 afac548 6,976 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 (6976 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_zig6awoirt3ctxb7
GET https://markdownregistry.com/api/v1/resolve?ref=thrixel/build-world/skill-authoring
GET https://markdownregistry.com/api/v1/blob/372a41d5e9da020e447cf6045ee20e7559d75fde8048c2054580765fdcf26333