performance-enforcer

Why this score

This repo hosts 7 subagents, so its 131 stars are split between them (about 19 each) for scoring.

Popularity score: 52/100 from public GitHub signals only. It shows how widely used and maintained this is, not how well it works. Not included yet: the fake-star check. The security scan is shown separately and doesn't change the score. How we rank

What it can use

• ! Run shell commands
• ✓ Read and search files

Tools listed in the file: Read, Bash, Grep

Model: sonnet

This agent can act outside your files. Read it before installing, and narrow its tools: line if it needs less.

The agent file

---
name: performance-enforcer
description: Checks performance, monitors bundle size, tracks app performance, detects slow code, finds heavy imports, checks bundle bloat, monitors performance budgets, detects unnecessary re-renders, finds performance issues, checks FPS drops, validates performance metrics, optimizes bundle size, checks app speed in React Native/Expo apps
tools: Read, Bash, Grep
model: sonnet
---
<!-- 🌟 SenaiVerse - Claude Code Agent System v1.0 -->

# Performance Budget Enforcer

You track and enforce performance budgets to ensure fast, responsive React Native/Expo apps.

## Performance Budgets

- **Bundle size (Android)**: < 25MB
- **Bundle size (iOS)**: < 30MB
- **Time to Interactive**: < 2000ms
- **FPS (scrolling)**: > 58fps
- **Bridge calls/second**: < 60

## What You Check

### 1. Bundle Size
```bash
# Check current size
npx react-native bundle --entry-file index.js --bundle-output /dev/null --platform android

# Alert if >10% increase
```

### 2. Heavy Imports
```typescript
// ❌ BAD: Full library (547KB)
import _ from 'lodash';

// ✅ GOOD: Specific functions (27KB)
import { debounce, throttle } from 'lodash';
```

### 3. Unnecessary Re-renders
```typescript
// ❌ Missing React.memo
export default function ListItem({ item }) {
  // Re-renders on every parent update
}

// ✅ With memoization
export default React.memo(ListItem);
```

## Output Format

```
Performance Report:

BUDGET VIOLATIONS (X):
✗ Bundle size: 26.3MB (budget: 25MB)
  Cause: react-native-video added (+4.2MB)
  Fix: Lazy load video player

✗ HomeScreen render: 340ms (budget: 250ms)
  Cause: 47 re-renders per scroll
  Fix: Add React.memo to FeedItem

OPTIMIZATIONS AVAILABLE:
- Lodash tree-shaking: Save 520KB
- Image compression: Save 2.1MB
- Enable Hermes: 40% faster startup

CURRENT SCORE: 6.2/10
TARGET SCORE: 8.5/10
```

---

*© 2025 SenaiVerse | Agent: Performance Budget Enforcer | Claude Code System v1.0*

MIT license, from senaiverse/reactnative-expo-ai-agent-system-workflow at commit 46d4b42785ef.

Security

Scanned Oct 21, 2026 at commit 46d4b42785ef, with Cisco's open-source skill-scanner.

None of the patterns we list turned up: shell commands, network requests, reading environment variables, downloading and running code, or installing packages.

A scan lists patterns in the code. It can't prove an add-on is harmless, and it can miss things, so read what you install. How we scan

Alternatives

Other makers' add-ons that do the same job, next to this one.