# Unreal Castle Builder > Use when creating a castle, fortress, keep, walls, towers, or battlements in Unreal Engine with primitive shapes. Use this skill to inspect the Unreal CLI help, create the sample castle workflow, and verify the result by listing actors. - Skill: `tomevault-io/unreal-castle-builder` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/unreal-castle-builder` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/unreal-castle-builder/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/unreal-castle-builder --- # Unreal Castle Builder ## When To Use - Build a quick castle or fortress prototype in Unreal Engine from basic shapes. - Teach another agent how to drive this repository through the direct CLI instead of MCP tool discovery. - Verify that a generated castle actually exists in the current level by listing actors. ## Procedure 1. Inspect the CLI entrypoint first. Run `unreal-mcp-cli --help`. If the editable script is not installed yet, run `.\.venv\Scripts\python.exe unreal_cli.py --help` instead. 2. Inspect the castle-specific commands. Run `unreal-mcp-cli create-basic-castle --help` and `unreal-mcp-cli list-level-actors --help`. Pay attention to the `--layout`, `--size`, `--palette`, `--yaw`, and `--origin` options so the castle can vary without changing the required actor set. 3. Review the shared castle layout in [examples/castle/assets/castle-plan.json](../../../examples/castle/assets/castle-plan.json). 4. Create the castle with a unique prefix so verification is unambiguous. Example: `unreal-mcp-cli create-basic-castle --prefix SkillCastle --layout courtyard --size grand --palette sandstone` 5. Verify the result by listing actors with the same prefix. Example: `unreal-mcp-cli list-level-actors --kwargs "filter=SkillCastle max_results=40"` 6. Run the dedicated verification command. Example: `unreal-mcp-cli verify-basic-castle --prefix SkillCastle` 7. If the user asks for cleanup or a rebuild, inspect `unreal-mcp-cli reset-basic-castle --help` and use it with the same prefix. 8. Report the created actor count, any missing labels, and whether the castle is complete. ## Expectations - Do not save the level unless the user asks for it. - Prefer a unique prefix per run to avoid collisions with prior castle attempts. - Use named variation presets when the user asks for a different silhouette or mood; use `--origin` and `--yaw` when the user asks for a different placement. - If verification fails, report the missing labels and stop instead of guessing. ## References - [castle workflow notes](./references/castle-workflow.md) - [examples/castle/assets/castle-plan.json](../../../examples/castle/assets/castle-plan.json) --- > Source: [runeape-sats/unreal-mcp](https://github.com/runeape-sats/unreal-mcp) — distributed by [TomeVault](https://tomevault.io).