Model gemini-3.6-flashMeasured 8/21/2026v125 of 26 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 3
Prompt
We are diagnosing complex React rendering bottlenecks, memoization pitfalls, and bundle size optimizations. Which reference document file from the performance resources contains React-specific performance patterns?
What was checked, without and with the skill
Checked
Without skill
With skill
specifies references/react_patterns.md
Missed
Passed
case-19 · gemini-3.6-flash · 8/21/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md404 lines5 files
Performance
This skill provides comprehensive performance capabilities including performance analysis, optimization, load testing, stress testing, capacity planning, and framework-specific performance patterns.
When to Use This Skill
When identifying performance bottlenecks
When investigating memory leaks or high memory usage
When optimizing slow database queries
When analyzing frontend performance (Core Web Vitals, bundle size)
When setting up performance monitoring
When conducting performance audits before deployment
When creating load test scenarios
When analyzing performance under stress
When identifying system bottlenecks under load
When planning capacity
When setting up performance benchmarks
When optimizing React rendering performance
When reducing bundle size
When improving Core Web Vitals (LCP, FID, CLS)
When fixing memory leaks in React apps
When implementing advanced React patterns
What This Skill Does
Performance Profiling: Analyzes CPU, memory, and network performance
Bottleneck Identification: Pinpoints specific performance issues
Memory Analysis: Detects memory leaks and high memory usage
Database Optimization: Identifies slow queries and optimization opportunities
Frontend Analysis: Analyzes bundle size, rendering performance, Core Web Vitals
Load Testing: Creates and executes load test scenarios
Stress Testing: Identifies breaking points and limits
Capacity Planning: Analyzes scalability and capacity
React Optimization: Optimizes React rendering, bundle size, and Core Web Vitals
Monitoring Setup: Creates performance monitoring and alerting