Bridges Claude Desktop or Claude Code to a live 3DStreet scene running in your browser tab via a localhost WebSocket relay. Once paired, you can ask Claude to read the current scene graph, add or modify street segments (bike lanes, sidewalks), change environment presets, manipulate entities and components, or undo changes. The relay forwards tools/list and tools/call over stdio MCP to the browser, where the editor's command registry does the actual work. No auth tokens cross the wire; pairing happens via a URL fragment like https://3dstreet.app/#mcp. Useful when you want conversational scene editing without leaving Claude, especially for iterating on street designs or querying complex A-Frame hierarchies. Ships with read-only mode to block mutations during explanations.
claude mcp add --transport stdio app.3dstreet-3dstreet uvx 3dstreet