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.
npx skills add YanxReal/Xcode-MPC --skill xcode-simulator-visiongit clone --depth 1 https://github.com/YanxReal/Xcode-MPCWrote 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/yanxreal/xcode-mpc/xcode-simulator-vision)<a href="https://agentmods.dev/skills/yanxreal/xcode-mpc/xcode-simulator-vision"><img src="https://agentmods.dev/badge/skills/yanxreal/xcode-mpc/xcode-simulator-vision/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/yanxreal/xcode-mpc/xcode-simulator-vision"><img src="https://agentmods.dev/badge/skills/yanxreal/xcode-mpc/xcode-simulator-vision.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00000 | $0.00841 |
| Opus 5.5 | $0.00000 | $0.00336 |
| Sonnet 5.5 | $0.00000 | $0.00168 |
| Haiku 4.5 | $0.00000 | $0.00084 |
Grade A, and why
xcode-simulator-vision 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 1mo 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 — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Xcode Simulator & Vision/UI
Covers simulators (9 core + 5 extra), devices (2), profiling (1) and Vision/UI (4) — 20 tools for running and interacting with simulators intelligently.
Tools
Core simctl (9): simctl_list (booted), simctl_lifecycle (boot|shutdown|erase), simctl_install_launch, simctl_media_capture (screenshot|record), simctl_push_notification, simctl_location_mock, simctl_privacy_control, simctl_ui_appearance, simctl_open_url
Extra simctl (5): simctl_set_appearance (light|dark), simctl_set_dynamic_type (12 extra-small→accessibility-extra-extra-extra-large), simctl_manage_storekit (load|clear|buy|refund), simctl_simulate_event (incoming_call→tel://, network_offline/online→status_bar), simctl_send_push (object jsonPayload with aps → simctl push)
Devices/Profiling: devicectl_list, devicectl_logs (1-120s), xctrace_profile (Time Profiler|Allocations|Leaks)
Vision/UI (4): simctl_get_screen_analysis (screenshot + sips → {imagePath,resolution}), simctl_inspect_ui_tree (accessibility tree → [{role,center}]), simctl_tap_by_text (partial/exact → CLICKED:x,y), simctl_fill_field (clearFirst + keystroke)
Vision Workflow (Preferred)
Instead of guessing coordinates:
simctl_get_screen_analysis {udid:"booted"} // get /tmp/sim_screen_latest.png + resolution for Vision LLM
→ simctl_inspect_ui_tree {} // get JSON tree with centers
→ simctl_tap_by_text {text:"Continuar"} // smart tap computes center
→ simctl_fill_field {labelOrPlaceholder:"Correo", textToType:"[email protected]", clearFirst:true}
For icon-only buttons, use the imagePath from get_screen_analysis with Vision LLM to estimate coordinates, then fallback to tap_by_text.
Classic Simulator Flow
simctl_list {booted:true}
→ simctl_lifecycle {action:"boot", udid:"..."}
→ simctl_install_launch {appPath:"build/.../MyApp.app", bundleId:"com.yanxreal.myapp", launch:true}
→ simctl_location_mock {latitude:40.41, longitude:-3.70}
→ simctl_media_capture {type:"screenshot", outputPath:"/tmp/01.png"}
→ simctl_set_appearance {appearance:"dark"}
→ simctl_set_dynamic_type {sizeCategory:"large"}
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.
- 1mo ago First seen · 54 lines · 0 tokens per session scan A c08854548e5f
xcode-simulator-vision is a skill published in the GitHub repository YanxReal/Xcode-MPC (1 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 841 tokens. 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 2026-08-31.
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