N8n Workflow Builder Mcp MCP Server

I want to add the "N8n Workflow Builder Mcp MCP Server" MCP server to my project.
Repository: https://github.com/ifmelate/n8n-workflow-builder-mcp

Please read the repo's README, then:
1. Install any required dependencies
2. Add the server to my MCP configuration (claude_desktop_config.json or .claude/settings.json — whichever applies)
3. Verify the config is valid JSON