Validates and corrects n8n expression syntax to ensure reliable workflow automation and data mapping.
The n8n Expression Syntax skill is a specialized guide and validator designed to help developers master the n8n expression engine. It provides immediate assistance with the double curly brace syntax, variable scoping for $json and $node, and common pitfalls like accessing nested webhook data. Whether you are troubleshooting 'undefined' errors, formatting dates with Luxon via $now, or transitioning logic between Code nodes and expressions, this skill ensures your automation data flows correctly across your self-hosted or cloud n8n environment.
Key Features
01Provides bracket notation fixes for field names containing spaces
02Corrects variable scoping for $json, $node, $now, and $env
03Distinguishes between expression usage and direct JavaScript in Code nodes
040 GitHub stars
05Identifies and fixes the common webhook data root access mistake
06Validates double curly brace {{ }} syntax and prevents literal text errors
Use Cases
01Formatting dynamic timestamps and performing date math in notifications
02Mapping complex nested JSON data from webhooks and API responses
03Troubleshooting 'Cannot read property of undefined' errors in workflow nodes
