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czlonkowski/n8n-code-javascript

在 n8n Code 节点中编写 JavaScript 代码。用于在 n8n 中处理 JavaScript 逻辑、数据转换、HTTP 请求等场景。

n8n-code-javascript 是什么?

该技能专为在 n8n 工作流中使用 Code 节点(JavaScript)的开发者设计。它提供了编写、调试和优化 JavaScript 代码的指导,涵盖 $input/$json/$node 语法、通过 this.helpers 或 $helpers 发起 HTTP 请求、使用 DateTime 处理日期、选择 Code 节点模式以及排查常见错误。技能还包括 SplitInBatches 循环模式、跨迭代数据传递、pairedItem 处理和实际生产模式。当回答为什么 Code 节点或工作流运行缓慢、哪种执行模式更快、或如何减少大数据集上的每项开销时,也应使用此技能。注意:对于 AI Agent 可调用的自定义代码工具(@n8n/n8n-nodes-langchain.toolCode),应使用 n8n-code-tool 技能,因其运行时约定不同。支持平台:n8n 工作流、Claude Code 等 AI 编码助手。

兼容平台~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/czlonkowski/n8n-skills/tree/main/skills/n8n-code-javascript

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n8n-code-javascript 是做什么的?

在 n8n Code 节点中编写 JavaScript 代码。用于在 n8n 中编写 JavaScript 时,使用 $input/$json/$node 语法、通过 this.helpers / $helpers 全局变量发起 HTTP 请求、使用 DateTime 处理日期、排查 Code 节点错误、选择 Code 节点模式,或在 n8n 中执行任何自定义数据转换。当工作流需要 Code 节点时,始终使用此技能——无论是用于数据聚合、过滤、API 调用、格式转换、批处理逻辑还是任何自定义 JavaScript。涵盖 SplitInBatches 循环模式、跨迭代数据、pairedItem 以及实际生产模式。当被问及为什么 Code 节点或工作流运行缓慢、哪种执行模式更快、或如何减少大数据集上的每项开销时,也请使用此技能。例外——对于 AI Agent 可调用的自定义代码工具(@n8n/n8n-nodes-langchain.toolCode,即附加到 AI Agent 的工具),请改用 n8n-code-tool 技能,因为它有不同的运行时约定。

Individual skills in this repo

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

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-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).

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