n8n 表达式语法验证与修复 是做什么的？
验证 n8n 表达式语法并修复常见错误。适用于编写 n8n 表达式、使用 {{}} 语法、访问 $json/$node 变量、排查表达式错误、在节点间映射数据或在工作流中引用 Webhook 数据等场景。在配置引用前一个节点数据的节点字段时，请务必使用本技能——因为表达式是 n8n 在节点间传递数据的方式，而语法错误是工作流中最常见的错误来源。此外，当被问及复杂表达式是否会影响性能时，也应使用本技能。
验证 n8n 表达式语法并修复常见错误。适用于编写 n8n 表达式、使用 {{}} 语法、访问 $json/$node 变量、排查表达式错误、在节点间映射数据或在工作流中引用 Webhook 数据等场景。
该技能专门用于验证 n8n 工作流中的表达式语法，并自动修复常见错误。它适用于编写 n8n 表达式、使用双花括号 {{}} 语法、访问 $json 或 $node 变量、排查表达式错误、在节点间映射数据以及在工作流中引用 Webhook 数据等场景。该技能的核心价值在于解决 n8n 中最常见的错误来源——表达式语法错误，尤其是当配置引用前一个节点数据的节点字段时。此外，它还能帮助回答复杂表达式是否会影响性能的问题。该技能支持所有 n8n 平台，包括自托管实例和 n8n.cloud。其工作原理基于 n8n 表达式文档，能够解析表达式结构，检查语法正确性，并提供具体的修复建议，从而减少工作流运行时的错误率和调试时间。
npx skills add https://github.com/czlonkowski/n8n-skills/tree/main/skills/n8n-expression-syntaxInstalled? Explore more 生产力与协作 skills: steipete/gemini, steipete/gh-issues, steipete/skill-creator · View all 6 →
验证 n8n 表达式语法并修复常见错误。适用于编写 n8n 表达式、使用 {{}} 语法、访问 $json/$node 变量、排查表达式错误、在节点间映射数据或在工作流中引用 Webhook 数据等场景。在配置引用前一个节点数据的节点字段时，请务必使用本技能——因为表达式是 n8n 在节点间传递数据的方式，而语法错误是工作流中最常见的错误来源。此外，当被问及复杂表达式是否会影响性能时，也应使用本技能。
This repo contains 6 individual skills — each has its own dedicated page.
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.
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).
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.
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.
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.
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).
Gemini CLI one-shot prompts, summaries, generation, skills, hooks, MCP, or Gemma routing.
Fetch GitHub issues, select candidates, spawn background fix agents, open PRs, and optionally process PR review comments.
Create, edit, audit, tidy, validate, or restructure AgentSkills and SKILL.md files.
Search, install, update, sync, or publish agent skills with the ClawHub CLI and registry.
Delegate coding work to Codex, Claude Code, or OpenCode as background workers; not simple edits or read-only code lookup.
List, configure, authenticate, call, and inspect MCP servers/tools with mcporter over HTTP or stdio.