Always use the docs/reference/api-review-checklist.md file for detailed checklists on performance optimization, API design, security vulnerabilities, and standards compliance when planning, writing, or reviewing code changes.

Performance optimization, API design & compatibility, security vulnerabilities, and standards spec compliance for workerd code review. Covers tcmalloc-aware perf analysis, compat flags, autogates, web standards adherence, and security patterns. Load this skill when reviewing API changes, performance-sensitive code, security-relevant code, or standards implementations.
Always use the docs/reference/api-review-checklist.md file for detailed checklists on performance optimization, API design, security vulnerabilities, and standards compliance when planning, writing, or reviewing code changes.
Very brief skill that provides a trigger context and references an external checklist file but provides no direct actionable content. Has clear when-to-use section (R3 bonus) but is very short (R4 penalty) with nested internal path (R8, R9 penalties). Points to docs/reference/api-review-checklist.md for actual guidance, making this more of a pointer than a complete skill."