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RoadBLD MCP

Build and edit roads in Unreal Engine with help from your AI assistant(ChatGPT Desktop app works best right now). RoadBLD MCP can draw roads, grids, and roundabouts; change lane widths; apply presets; rebuild networks; and capture viewport images for review.

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What this toolset does

Your AI assistant can:

• List road presets, including highways, residential streets, and boulevards.
• Draw roads from a description, straight roadds, grids, rings, and roundabouts.
• Edit existing roads, including lane width, sidewalks, presets, and control points.
• Rebuild the road network so intersections and meshes update.
• Capture viewport screenshots to verify the result.
• Create custom presets from descriptions; the AI validates them before applying.

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Important: Junctions are automatic

Intersections appear when roads cross. You do not place junctions by hand, and you do NOT need to end your roads at junctions for them to generate. Just have the roads overlap naturally.

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How to use it

Installing The RoadBLD MCP

You can get the RoadBLD MCP bundled with the WorldBLD MCP toolset here. Make sure you have the latest version of RoadBLD installed.

Using WorldBLD MCP With Claude/ChatGPT

With an AI assistant

Start with clear, visual requests: