Contains verified extension development workflows, webview CSP pitfall resolutions, and profile-based install fixes that produce more correct results than reasoning from general training alone. Targets stable VS Code on Windows/macOS/Linux desktop — not…
Craft Mermaid diagrams within Markdown for flowcharts, ERDs, sequence diagrams, state machines, Gantt charts, and mindmaps. Includes validated syntax templates, layout optimization, and cross-platform rendering for GitHub, GitLab, VS Code, and Obsidian. Use…
Implement JavaScript logic in n8n Code nodes with $input, $json, $node, and $helpers APIs. Includes HTTP requests, Luxon DateTime operations, error debugging, and mode selection (Run Once vs Run for Each). Engage for custom data transformations or complex…
Develop Python logic within n8n Code nodes using _input, _json, and _node accessors. Covers standard library usage, execution constraints, and when Python is preferable over JavaScript. Activate for Python-specific transformations or data processing in…
Master n8n's double-curly-brace expression language for dynamic workflow data. Covers $json, $node, and $input variable access patterns, debugging syntax issues, and handling webhook payloads. Activate when crafting expressions, resolving evaluation failures,…
Navigate the n8n-mcp server's 40+ tools for node discovery, configuration validation, template access, and workflow management. Covers tool selection strategy, parameter formatting, and integration patterns. Consult when building workflows programmatically…
Configure n8n nodes with operation-specific guidance and property dependencies. Explains required versus optional fields, progressive disclosure with get_node_essentials, and established patterns for common node types. Invoke when setting up nodes or…
Diagnose and resolve n8n workflow validation failures including warnings, false positives, and structural issues. Explains validation profiles, iterative fix cycles, and error categorization. Engage when validation blocks workflow execution or produces…