Loomle MCP for Unreal — Claude Code MCP server
Connects AI assistants to Unreal Engine 5.7 and 5.8 editors to inspect and edit Blueprints, assets, and widget hierarchies via SAL text.
Open on GitHubWhat Loomle MCP for Unreal does
Loomle translates Unreal Engine editor assets into a compact textual notation called SAL. Instead of bulky JSON exports, it returns localized summaries with stable target paths for nodes and pins. This preserves context space. Compiler diagnostics sit right beside the inspected elements.
The client exposes eight MCP tools, covering status probes, project binding, queries, patches, schema discovery, window focus, and Python fallbacks. Edits support dry runs. The parser resolves and validates changes before writing to disk.
Any leftover 0.6 plugin inside <Project>/Plugins/LoomleBridge overrides engine-level installations and forces the editor to run outdated code. The bundled executable runs without a separate Node.js or Python setup.
What it helps with
- inspect Blueprint graphs and widget hierarchies in token-efficient text
- apply dry-run validated changes to Unreal Engine asset graphs
- open, focus, or close specific editor tabs directly from agent workflows
- read engine compiler warnings and errors alongside matching objects
Example prompts for the agent
- Check the active Bridge connection using the
statustool. - Execute a
sal_queryto summarize/Game/Blueprints/BP_Door.BP_Door. - Inspect the available interface cards for
graphusingsal_schema.
How to install Loomle MCP for Unreal
Install
The MCP registry has no launch command for it: see the repository README
Step by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Loomle MCP for Unreal
How to install Loomle MCP for Unreal in Claude Code?
Extract the release archive into <UE_version>/Engine/Plugins/Marketplace/LoomleBridge, enable the plugin inside Unreal Editor, and configure your MCP client to launch the bundled binary under Resources/Loomle with the mcp argument.
What does Loomle MCP for Unreal do?
It provides an MCP interface for Unreal Engine, converting complex Blueprint and asset graphs into structured SAL text that coding assistants can inspect and modify.
Which Unreal Engine versions are supported?
Prebuilt binaries support Unreal Engine 5.7 and 5.8 on macOS Apple Silicon and Windows x64.
