ios-runtime-forensics-workflow

ios-runtime-forensics-workflow is a skill for Claude Code, Codex from gaelic-ghost/socket. It costs 54 tokens per session (758 once invoked), scanned A, original, Apache-2.0.

An evidence-based workflow for investigating iOS Simulator performance problems and memory leaks. It uses performance traces for CPU or latency issues and memory graphs for retained objects and ownership.

In plain words
What is it for?
Use it to measure launch or runtime latency, inspect CPU-heavy work, find retain cycles, and identify objects that remain in memory after an interaction.
Why use it?
It replaces guesses about runtime behavior with repeatable captures tied to a specific reproduction, app build, simulator, and expected result.

Skill for Claude CodeCodex

Part of the apple-dev-skills plugin — 65 skills, 2 MCP servers shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/gaelic-ghost/socket/ios-runtime-forensics-workflow
Any agent
npx skills add gaelic-ghost/socket --skill ios-runtime-forensics-workflow
Clone the repo
git clone --depth 1 https://github.com/gaelic-ghost/socket

Made for: Claude Code, Codex.

Or install apple-dev-skills, the plugin that ships this one along with the rest of its 65 skills, 2 MCP servers.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ios-runtime-forensics-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/gaelic-ghost/socket/ios-runtime-forensics-workflow.svg)](https://agentmods.dev/skills/gaelic-ghost/socket/ios-runtime-forensics-workflow)
Your own site
<a href="https://agentmods.dev/skills/gaelic-ghost/socket/ios-runtime-forensics-workflow"><img src="https://agentmods.dev/badge/skills/gaelic-ghost/socket/ios-runtime-forensics-workflow.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 758 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00054 $0.00758
Opus 5 $0.00027 $0.00379
Sonnet 5 $0.00011 $0.00152
Haiku 4.5 $0.00005 $0.00076

Measured yesterday against content hash 6dd52edca6fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ios-runtime-forensics-workflow scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/apple-dev-skills/skills/ios-runtime-forensics-workflow/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

iOS Runtime Forensics Workflow

Purpose

Provide two explicit evidence modes for a reproducible iOS Simulator issue: performance-trace for focused ETTrace/symbolicated latency or CPU work, and memory-graph for retained-object and leak ownership analysis. This skill owns evidence shape, not normal app build, launch, or UI driving.

When To Use

  • Use performance-trace for launch/runtime latency, CPU-heavy stacks, or comparison traces.
  • Use memory-graph for leaks, retain cycles, memory growth, or objects that should release after a known interaction.
  • Route simulator discovery, build, install, launch, logs, screenshots, and UI driving to xcode-build-run-workflow.

Single-Path Workflow

  1. Apply the Apple docs gate through explore-apple-swift-docs. Confirm the current Xcode/Simulator evidence mechanism before acting.
  2. Define one reproduction, start/stop boundary, target app build, simulator UDID, OS, Xcode version, and expected release or latency behavior.
  3. Select exactly one mode: performance-trace or memory-graph. Do not mix CPU and ownership conclusions in one unsupported capture.
  4. For performance-trace, read references/performance-trace-evidence.md, capture a focused trace with matching symbols, and identify hot stacks only after symbolication.
  5. For memory-graph, read references/memory-graph-evidence.md, drive the release-producing flow, capture a memgraph, inspect app-owned retained types, and follow ownership evidence to the retaining path.
  6. Make the smallest root-cause change, then recapture the same flow on the same simulator where practical.
  7. Report the exact capture boundary, tool/version context, what the artifact proves, what it does not prove, and the before/after delta.

Inputs

  • reproducible simulator flow, target app/scheme, simulator UDID, and build configuration
  • expected release/lifetime or performance boundary
  • mode: performance-trace or memory-graph
  • existing trace, memgraph, logs, screenshots, or symbol files when available

Read the full file on GitHub · 59 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 59 lines · 54 tokens per session scan A 6dd52edca6fb

Subscribe to this mod's changes

ios-runtime-forensics-workflow is a skill published in the GitHub repository gaelic-ghost/socket (7 stars, last pushed 9d ago), licensed Apache-2.0. It adds 54 tokens to every session and 758 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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