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Swiftui Performance Audit

Checked
steipete·vlatest·frontend·MIT

Helps with SwiftUI, performance optimization, auditing as part of building frontend UIs and user experiences workflows.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add steipete/agent-scripts --skill swiftui-performance-audit -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

steipete

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned steipete/agent-scripts at 3f8c6a33f9.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
3f8c6a33f9
Manifest
skills/swiftui-performance-audit/SKILL.md
Scanned
5 files, 334 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

The swiftui-performance-audit skill analyzes SwiftUI codebases to identify potential performance bottlenecks and rendering inefficiencies. It scans for common anti-patterns such as excessive view recomposition, heavy computations in body properties, and improper state management that could degrade app responsiveness.

When to use it

  • Before launching a production iOS app to ensure smooth frame rates during complex UI interactions.
  • During code reviews when evaluating third-party SwiftUI components for hidden performance costs.
  • After adding new features involving large datasets or real-time data streams to prevent lag.
  • When debugging reported stuttering or jank issues that are difficult to isolate manually.

Key capabilities

  • Detects unnecessary view recomposition triggers caused by state changes.
  • Identifies heavy calculations performed inside the body rendering block.
  • Flags inefficient use of @StateObject, @ObservedObject, and @EnvironmentObject.
  • Highlights missing .onAppear or lifecycle optimizations for long-running tasks.

Example prompts

"Run a performance audit on my SwiftUI project to find any views that might cause frame drops." "Analyze this ContentView file for common rendering inefficiencies and suggest fixes." "Check if my real-time stock ticker view is triggering too many recompositions when data updates."

Tips & gotchas

This tool focuses specifically on SwiftUI patterns; it may not catch issues in UIKit or Combine-heavy logic outside of SwiftUI views. For best results, run the audit after completing major feature implementations but before final optimization passes.