More screenshots
Works with the AI tools you already use
⚡ Perf Budget Auditor
It scans build artifacts, manifests (stats.json), and asset folders to identify oversized bundles, unoptimized images, leaked source maps, and unminified JavaScript.
Secure checkout via Stripe
See it in action
You say
Audit my dist folder against our performance budget and let me know if the build is safe to deploy.
Your agent does
Perf Budget Audit Results
- Severity: HIGH | Rule: INITIAL_JS_BUDGET
- File: dist/assets/index-D4f2a.js (450KB)
- Message: Exceeds initial budget of 200KB.
- Remediation: Use dynamic imports to code-split non-critical modules or check for duplicate dependencies.
What you get
About this skill
What it does
Perf Budget Auditor is a specialized developer tool designed to automatically detect frontend performance regressions before they reach production. It scans build artifacts, manifests (stats.json), and asset folders to identify oversized bundles, unoptimized images, leaked source maps, and unminified JavaScript.
Why use this skill
Manually checking file sizes after every build is tedious and error-prone. This skill automates the audit process by comparing your build output against defined performance budgets (perf-budget.json). It provides actionable remediation guidance rather than just raw numbers, helping developers pinpoint exactly which chunks or assets are bloating the application.
Supported tools
- Standard web build folders (dist, build, out)
- Webpack/Rollup/Vite manifest files (stats.json)
- Custom performance budget configurations
- Common frontend assets (JS, CSS, WASM, Images)
Output Expected
You will receive a structured report detailing the inspected scope, specific rule violations, severity levels, and precise file paths. Each finding includes "evidence" (e.g., actual size vs. budget) and clear remediation steps to fix the bloat.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
Reviews
No reviews yet
Be one of the first to try it. Every listed skill passes our trust checks below.
Security scanned
Passed our 8-point scan before listing
Fresh listing
Recently published to Agensi
30-day refund
Not a fit? Get your money back
Trust & safety
Security scanned
Verified clean 1 month ago
- 30-day refund guarantee
- One-time purchase, yours forever
- Secure checkout via Stripe
Creator
JustHandled Labs builds focused agent skills for the work nobody wants to do by hand. Each one is a single repeatable job done well: catching the security and data mistakes that quietly ship, keeping docs and tests honest, gating the commands an agent is about to run, sharpening writing, and handling the founder chores around launches, outreach, and brand setup. Not generic AI productivity. Specific workflows that are easy to run, review, and repeat. Maintained by H.J. Westerfield, with a background in communications, editing, project coordination, customer support, and practical AI systems. Tools for people who want useful automation without theatrical complexity.
Frequently Asked Questions
Popular in Testing & QA
🧪 Test Quality Auditor
Find the unit tests that pass without testing anything. Flags tests with no assertions, trivial existence-only checks (toBeDefined, assertIsNotNone), tests that assert the exact value they just mocked, snapshot-only tests, tautological assertions (expect(true).toBe(true)), empty placeholders, and over-mocked tests with more setup than assertions. Works on Jest/Vitest and pytest/unittest.
api-contract-tester
Turn OpenAPI specs into exhaustive, framework-ready test suites covering happy paths, edge cases, and security gaps.
lobster-debugging
A systematic 4-phase debugging framework to find root causes, eliminate flaky tests, and prevent regressions.
prod-bug-hunter
Systematic runtime bug detection and automated patching for Firebase, Next.js, and Vercel stacks.