CommunityProdutividade e Colaboraçãogithub.com

czlonkowski/n8n-expression-syntax

Valide a sintaxe de expressões n8n e corrija erros comuns. Use ao escrever expressões n8n, utilizar a sintaxe {{}}, acessar variáveis $json/$node, solucionar erros de expressão, mapear dados entre nós ou referenciar dados de webhook em workflows.

O que é n8n-expression-syntax?

Esta skill especializada na validação e correção de sintaxe de expressões n8n é essencial para desenvolvedores que trabalham com fluxos de automação no n8n. Ela ajuda a garantir que as expressões — que são o mecanismo central de passagem de dados entre nós — estejam corretamente formatadas, evitando o erro mais comum em workflows. A skill cobre o uso da sintaxe de interpolação {{}}, variáveis especiais como $json, $node e $items, além de expressões avançadas com a biblioteca Lodash. Ela também explica quando expressões complexas podem impactar o desempenho, especialmente aquelas que envolvem loops, transformações e avaliações em tempo real durante a execução do workflow. Compatível com todas as versões recentes do n8n, funciona tanto via interface web quanto CLI.

Funciona com~Claude Code~Codex CLI~Cursor
Part ofAgent Workflows
npx skills add https://github.com/czlonkowski/n8n-skills/tree/main/skills/n8n-expression-syntax

Installed? Explore more Produtividade e Colaboração skills: steipete/gemini, steipete/gh-issues, steipete/skill-creator · View all 6 →

Ver original→Navegar por todas as habilidades

Perguntar na sua IA favorita

Abre um novo chat com esta habilidade de agente já pré-carregada.

OpenAIChatGPTClaudeClaudeGeminiGeminiGrokGrokPerplexityPerplexityDeepSeekDeepSeek

Documentação

O que n8n-expression-syntax faz?

Valide a sintaxe de expressões n8n e corrija erros comuns. Use ao escrever expressões n8n, utilizando a sintaxe {{}}, acessando variáveis $json/$node, solucionando erros de expressão, mapeando dados entre nós ou referenciando dados de webhook em workflows. Use esta habilidade sempre que configurar campos de nó que referenciam dados de nós anteriores — expressões são como o n8n passa dados entre nós, e errar a sintaxe é a fonte mais comum de erros em workflows. Use também quando perguntado se uma expressão complexa prejudica o desempenho.

Individual skills in this repo

This repo contains 6 individual skills — each has its own dedicated page.

czlonkowski/n8n-code-javascript

Write JavaScript code in n8n Code nodes. Use when writing JavaScript in n8n, using $input/$json/$node syntax, making HTTP requests with this.helpers / the $helpers global, working with dates using DateTime, troubleshooting Code node errors, choosing between Code node modes, or doing any custom data transformation in n8n. Always use this skill when a workflow needs a Code node — whether for data aggregation, filtering, API calls, format conversion, batch processing logic, or any custom JavaScript. Covers SplitInBatches loop patterns, cross-iteration data, pairedItem, and real-world production patterns. Also use when asked why a Code node or workflow is slow, which execution mode is faster, or how to cut per-item overhead on large datasets. EXCEPTION — for the AI-agent-callable Custom Code Tool (@n8n/n8n-nodes-langchain.toolCode, a tool attached to an AI Agent), use the n8n-code-tool skill instead; it has a different runtime contract.

czlonkowski/n8n-code-python

Write Python code in n8n Code nodes. Use when writing Python in n8n, using _input/_json/_node syntax, working with standard library, or need to understand Python limitations in n8n Code nodes. Use this skill when the user specifically requests Python for an n8n Code node. Note — JavaScript is recommended for 95% of use cases — only use Python when the user explicitly prefers it or the task requires Python-specific standard library capabilities (regex, hashlib, statistics). EXCEPTION — for Python in the AI-agent-callable Custom Code Tool (@n8n/n8n-nodes-langchain.toolCode), use the n8n-code-tool skill instead (input is _query, return must be a string).

czlonkowski/n8n-mcp-tools-expert

Expert guide for using n8n-mcp MCP tools effectively. Use when searching for nodes, validating configurations, accessing templates, managing workflows, managing credentials, auditing instance security, or using any n8n-mcp tool. Provides tool selection guidance, parameter formats, and common patterns. IMPORTANT — Always consult this skill before calling any n8n-mcp tool — it prevents common mistakes like wrong nodeType formats, incorrect parameter structures, and inefficient tool usage. If the user mentions n8n, workflows, nodes, or automation and you have n8n MCP tools available, use this skill first.

czlonkowski/n8n-node-configuration

Operation-aware node configuration guidance. Use when configuring nodes, understanding property dependencies, determining required fields, choosing between get_node detail levels, or learning common configuration patterns by node type. Always use this skill when setting up node parameters — it explains which fields are required for each operation, how displayOptions control field visibility, and when to use patchNodeField for surgical edits vs full node updates.

czlonkowski/n8n-validation-expert

Interpret validation errors and guide fixing them. Use when encountering validation errors, validation warnings, false positives, operator structure issues, or need help understanding validation results. Also use when asking about validation profiles, error types, the validation loop process, or auto-fix capabilities. Consult this skill whenever a validate_node or validate_workflow call returns errors or warnings — it knows which warnings are false positives and which errors need real fixes.

czlonkowski/n8n-workflow-patterns

Proven workflow architectural patterns from real n8n workflows. Use when building new workflows, designing workflow structure, choosing workflow patterns, planning workflow architecture, or asking about webhook processing, HTTP API integration, database operations, AI agent workflows, batch processing, or scheduled tasks. Always consult this skill when the user asks to create, build, or design an n8n workflow, automate a process, or connect services — even if they don't explicitly mention 'patterns'. Covers webhook, API, database, AI, batch processing, and scheduled automation architectures. Also use when optimizing a slow workflow or speeding up large-item-count processing (node count, batchSize, all-items vs per-item).

Habilidades Relacionadas

steipete/gemini

Gemini CLI one-shot prompts, summaries, generation, skills, hooks, MCP, or Gemma routing.

community

steipete/gh-issues

Fetch GitHub issues, select candidates, spawn background fix agents, open PRs, and optionally process PR review comments.

community

steipete/skill-creator

Create, edit, audit, tidy, validate, or restructure AgentSkills and SKILL.md files.

community

steipete/clawhub

Search, install, update, sync, or publish agent skills with the ClawHub CLI and registry.

community

steipete/coding-agent

Delegate coding work to Codex, Claude Code, or OpenCode as background workers; not simple edits or read-only code lookup.

community

steipete/mcporter

List, configure, authenticate, call, and inspect MCP servers/tools with mcporter over HTTP or stdio.

community
← More Produtividade e Colaboração skills