Automated Dependency Graph & Tagging for n8n Workflows

This comprehensive n8n workflow is designed to analyze and visualize the dependencies between workflows within an n8n instance. It automatically detects which workflows call others (sub-workflows), constructs a dependency graph, and applies relevant tags based on caller relationships. The process begins by fetching all workflows, identifying execution nodes that invoke sub-workflows, and building a dependency map. It then filters out uncalled or missing workflows to focus on active dependencies. The workflow includes steps to generate visual pie charts and MermaidJS diagrams, enabling an intuitive understanding of workflow relationships. Additionally, it automates the tagging process—creating new tags for callers, associating them with workflows, and updating workflow tags accordingly. This automation enhances workflow documentation, reduces manual effort, and helps maintain a clear structure in complex n8n environments, making it ideal for teams managing intricate automation architectures.