Borrowing it
Nothing to install: this file belongs to baijum/ukulele-companion. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/baijum/ukulele-companion/main/.cursor/skills/ios-screenshot-capture/SKILL.mdgit clone --depth 1 https://github.com/baijum/ukulele-companionWrote 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.
[](https://agentmods.dev/skills/baijum/ukulele-companion/ios-screenshot-capture)<a href="https://agentmods.dev/skills/baijum/ukulele-companion/ios-screenshot-capture"><img src="https://agentmods.dev/badge/skills/baijum/ukulele-companion/ios-screenshot-capture/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/baijum/ukulele-companion/ios-screenshot-capture"><img src="https://agentmods.dev/badge/skills/baijum/ukulele-companion/ios-screenshot-capture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 3 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Agent Snooping · line 15 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 222 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Rogue Agent · line 202 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00062 | $0.02198 |
| Opus 5 | $0.00031 | $0.01099 |
| Sonnet 5 | $0.00012 | $0.00440 |
| Haiku 4.5 | $0.00006 | $0.00220 |
Grade A, and why
ios-screenshot-capture scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 226 lines — stays where its author put it; the contents beside it link to each section on GitHub.
iOS Screenshot Capture via Simulator
Capture screenshots and screen recordings from a running iOS Simulator using xcrun simctl.
Prerequisites
- Xcode installed at
/Applications/Xcode.app - A booted iOS Simulator (verify with
xcrun simctl list devices booted) - App installed on the simulator
- If no simulator is running, use the ios-simulator-run skill to build and launch first.
Workflow
1. Get the booted simulator UUID
SIM_UUID=$(xcrun simctl list devices booted -j | python3 -c "import sys,json; devs=json.load(sys.stdin)['devices']; print([d['udid'] for ds in devs.values() for d in ds if d['state']=='Booted'][0])")
echo $SIM_UUID
If no simulator is booted:
xcrun simctl boot <DEVICE_UUID>
open -a Simulator
2. Capture a screenshot
xcrun simctl io $SIM_UUID screenshot output.png
The file is written directly to the local filesystem. PNG format by default.
3. Navigate between screens
iOS Simulator navigation is more limited than ADB. The recommended approach is a combination of techniques:
Accessibility inspector (find element coordinates):
# Use Accessibility Inspector.app (ships with Xcode) for element discovery
open -a "Accessibility Inspector"
Point the inspector at the Simulator window to find element positions and accessibility identifiers.
Keyboard shortcuts in Simulator:
Cmd+Shift+H— Home buttonCmd+Left/Right— Rotate device
simctl status bar (clean screenshots):
xcrun simctl status_bar $SIM_UUID override \
--time "9:41" \
--batteryState charged \
--batteryLevel 100 \
--cellularMode active \
--cellularBars 4
Reset after capturing:
xcrun simctl status_bar $SIM_UUID clear
4. App navigation reference
The iOS app uses a tab bar with four tabs (Play, Create, Learn, Reference). Each tab opens a menu-style NavigationStack with rows for each screen. Settings is accessible via a gear icon in each tab's toolbar.
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.
- 12d ago First seen · 226 lines · 62 tokens per session scan A e513b092b580
ios-screenshot-capture is a skill published in the GitHub repository baijum/ukulele-companion (14 stars, last pushed 2d ago), licensed MIT. It adds 62 tokens to every session and 2,198 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 2026-08-30.
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