n8n-code-javascript

Quick Review

Exceptional skill for n8n JavaScript Code nodes. The description clearly indicates when to invoke this skill (JavaScript in n8n, $input/$json syntax, HTTP helpers, DateTime, error troubleshooting). Task knowledge is comprehensive with production-ready patterns, error prevention for the top 5 mistakes, mode selection guidance, and proper return format requirements. Structure is excellent—SKILL.md provides a clear overview with quick start, mode selection, data access, webhook handling, and error prevention, while detailed patterns are properly delegated to separate files. The skill addresses a real complexity: n8n Code nodes have unique syntax ($input, $json, $node), non-obvious webhook body nesting, strict return format requirements, and mode selection nuances that would consume many tokens for a CLI agent to figure out. The thorough error pattern catalog and production patterns demonstrate deep domain knowledge that meaningfully reduces cost and errors.