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czlonkowski/n8n-validation-expert

Interpreta erros de validação e orienta como corrigi-los. Use ao encontrar erros de validação, avisos de validação, falsos positivos, problemas de estrutura de operadores ou precisar de ajuda para entender resultados de validação.

O que é n8n-validation-expert?

Esta skill é um especialista em validação para o n8n, uma plataforma de automação de fluxos de trabalho. Ela foi projetada para interpretar erros e avisos de validação, distinguindo entre falsos positivos e problemas reais que exigem correção. Ao consultar esta skill, desenvolvedores e usuários do n8n podem obter orientações detalhadas sobre como resolver problemas estruturais em operadores, entender perfis de validação, tipos de erro e o processo de loop de validação. Ela também oferece suporte para capacidades de correção automática. É especialmente útil quando chamadas de funções como `validate_node` ou `validate_workflow` retornam erros ou avisos, ajudando a identificar quais avisos podem ser ignorados e quais erros precisam de atenção imediata. A skill é independente de plataforma específica, sendo aplicável a qualquer ambiente que utilize o ecossistema n8n.

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

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Documentação

O que n8n-validation-expert faz?

Interpreta erros de validação e orienta como corrigi-los. Use ao encontrar erros de validação, avisos de validação, falsos positivos, problemas de estrutura de operadores ou precisar de ajuda para entender resultados de validação. Também use ao perguntar sobre perfis de validação, tipos de erro, o processo de loop de validação ou capacidades de correção automática. Consulte esta skill sempre que uma chamada validate_node ou validate_workflow retornar erros ou avisos — ela sabe quais avisos são falsos positivos e quais erros precisam de correções reais.

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-expression-syntax

Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, mapping data between nodes, or referencing webhook data in workflows. Use this skill whenever configuring node fields that reference data from previous nodes — expressions are how n8n passes data between nodes, and getting the syntax wrong is the most common source of workflow errors. Also use when asked whether a complex expression hurts performance.

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-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).

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