wei18/apple-dev-skills · apple-dev-skills/skills/ios-performance-engineering/SKILL.md

ios-performance-engineering skillA

ios-performance-engineering is agent-read markdown (skill) from wei18/apple-dev-skills: Measure and fix iOS/macOS performance — Instruments (Time Profiler, Allocations, SwiftUI instrument, Hangs), os_signpost, MetricKit field telemetry, XCTMetric baselines, launch-time optimisation, memory footprint, binary size. Invoke when diagnosing slowness/hitches/high memory, setting up CI perf baselines, wiring MetricKit, or asking "why is my app slow / using too much memory / large"..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add wei18/apple-dev-skills/ios-performance-engineering@git:20260904.f686066
Exact content
mdr add wei18/apple-dev-skills/ios-performance-engineering@sha256:534775c47591bb17

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_3uojqwivx3t25f3j.svg)](https://markdownregistry.com/a/art_3uojqwivx3t25f3j)

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Versions

versioncommittedcommitsizeaudit
git:20260904.f686066 latest2026-09-04 f686066 14,887 BA view · diff
git:20260625.e9a8ae12026-06-25 e9a8ae1 14,817 BA view · diff
git:20260624.681fa442026-06-24 681fa44 14,503 BA view · diff
git:20260624.331609b2026-06-24 331609b 14,089 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (14887 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

wei18/apple-dev-skills · 19 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_3uojqwivx3t25f3j
GET https://markdownregistry.com/api/v1/resolve?ref=wei18/apple-dev-skills/ios-performance-engineering
GET https://markdownregistry.com/api/v1/blob/534775c47591bb172d3ca9940c99bd0a021348230f1422456e0f87a25cc49d66