ios-ettrace-performance skillA
ios-ettrace-performance is agent-read markdown (skill) from omarshahine/homeclaw: Capture and interpret ETTrace profiles for iOS simulator apps, including symbolicated launch and runtime flamegraphs. Use when asked to profile an iOS app flow, gather simulator performance traces, identify CPU-heavy stacks, compare before/after traces, or produce flamegraph evidence for startup, scrolling, navigation, rendering, or other user-visible latency..
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.
What the file says
# iOS ETTrace Performance
Use this skill to capture a focused, symbolicated ETTrace profile from an iOS simulator app. Pair it with `../ios-debugger-agent/SKILL.md` when the task also needs simulator build, install, launch, UI driving, logs, or screenshots.
## Core Workflow
1. Pick one focused flow and write down the expected start and stop points.
2. Build the exact simulator app that will be installed and profiled.
3. Temporarily link ETTrace into that app target for simulator/debug profiling.
4. Collect UUID-matched dSYMs for the app executable and embedded dynamic frameworks.
5. Capture one launch or runtime trace.
6. Preserve the processed flamegraph JSON immediately after the run.
7. Analyze only the processed JSON and report the flow, artifacts, hotspots, and caveats.
Avoid broad "use the app for a while" captures. One trace should correspond to one user-visible flow.
## Setup
Use a writable run folder for each profiling session:
```bash
if [ -z "${RUN_DIR:-}" ]; then
RUN_DIR="$(mktemp -d "${TMPDIR:-/tmp}/codex-ios-ettrace.XXXXXX")"
fi
mkdir -p "$RUN_DIR"
```
Install the ETTrace runner CLI if it is not already available:
```bash
…Read the whole file at its exact version.
How to install
mdr add omarshahine/homeclaw/ios-ettrace-performance@git:20260510.35d37d5mdr add omarshahine/homeclaw/ios-ettrace-performance@sha256:a5ed95b19c3f9ae4Pin 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.
[](https://markdownregistry.com/a/art_icey6zpfujxjf4cx)
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Versions
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9048 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
omarshahine/homeclaw · 173 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_icey6zpfujxjf4cx GET https://markdownregistry.com/api/v1/resolve?ref=omarshahine/homeclaw/ios-ettrace-performance GET https://markdownregistry.com/api/v1/blob/a5ed95b19c3f9ae487307dbc15534caa4edd41ecf7a3b017c1328b4f72087411
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