n8n-expression-syntax
π―Skillfrom czlonkowski/n8n-skills
|Skill for validating and writing correct n8n expression syntax, covering double curly brace format, $json/$node variables, webhook data access, and common error fixes
Overview
N8n Expression Syntax is a Claude Code skill that validates n8n workflow expression syntax and fixes common errors. It provides guidance when writing expressions using the {{ }} syntax, accessing $json and $node variables, troubleshooting expression evaluation errors, and working with webhook data in n8n workflows.
Key Features
- Expression syntax validation: Checks n8n expressions wrapped in
{{ }}for correctness and highlights syntax issues before they cause runtime failures. - Variable access guidance: Helps correctly reference
$json,$node, and other built-in n8n variables within expressions. - Error troubleshooting: Identifies and fixes common expression errors that occur during workflow execution.
- Webhook data handling: Assists with correctly accessing and transforming data received from webhooks in n8n workflows.
- Real-time feedback: Provides immediate validation and correction suggestions as expressions are being written.
Who is this for?
This skill is designed for developers and automation engineers building workflows in n8n who frequently encounter expression syntax issues. It is particularly helpful for those new to n8n's expression system or working with complex data transformations involving nested JSON and multi-node references.
Same repository
czlonkowski/n8n-skills(9 items)
Installation
npx vibeindex add czlonkowski/n8n-skills --skill n8n-expression-syntaxnpx skills add czlonkowski/n8n-skills --skill n8n-expression-syntax~/.claude/skills/n8n-expression-syntax/SKILL.mdSKILL.md
More from this repository8
Seven complementary Claude Code skills for building production-ready n8n workflows using the n8n-mcp MCP server, covering expression syntax, workflow patterns, and validation error handling.
Expert skills for building n8n workflows
Provides proven architectural patterns for building n8n workflows including webhook processing, HTTP API integration, database operations, AI agent workflows, and scheduled tasks.
Expert guide skill for using n8n-mcp MCP tools to build workflows, covering node discovery, configuration validation, workflow management, and a library of 2,700+ templates
Operation-aware node configuration guidance for n8n covering property dependencies, required field determination, progressive disclosure detail levels, and common configuration patterns by node type.
Executes custom JavaScript code within n8n workflows, enabling complex data transformations, calculations, and dynamic logic across workflow nodes
Expert guide for interpreting and fixing n8n validation errors, covering error severity levels (errors, warnings, suggestions), false positives, operator structure issues, and the iterative validation loop process.
Skill for writing Python code in n8n Code nodes, covering _input/_json/_node syntax, standard library usage, and Python-specific limitations compared to JavaScript nodes