aeo-n8n

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 business logic.

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 workflows.

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, or mapping data between nodes.

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 via MCP.

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 debugging missing parameters.

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 confusing results.

Battle-tested architectural blueprints derived from production n8n deployments. Covers webhook handlers, REST API integrations, database pipelines, AI agent orchestration, and scheduled automation. Reference when designing new workflows or selecting the right pattern for your use case.