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 tonydzi/second-brain-starter-kit --skill display-modegit clone --depth 1 https://github.com/tonydzi/second-brain-starter-kitWrote 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/tonydzi/second-brain-starter-kit/display-mode)<a href="https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/display-mode"><img src="https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/display-mode/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/tonydzi/second-brain-starter-kit/display-mode"><img src="https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/display-mode.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 | $0.00115 | $0.01472 |
| Opus 5.5 | $0.00046 | $0.00589 |
| Sonnet 5.5 | $0.00023 | $0.00294 |
| Haiku 4.5 | $0.00012 | $0.00147 |
Grade A, and why
display-mode 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.
How it starts
The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/display-mode: разрешение экрана Мака
Утилита: display_mode.c рядом с этим файлом (CoreGraphics, 0 LLM, без brew). Описание флагов и обе ловушки записаны в шапке исходника.
Портируемость. Родился на Intel Mac Pro (macOS 15, 4K monitor), там проверен. Apple Silicon: тот же API, должен собраться, не проверялся. Windows: веток нет, сделай ChangeDisplaySettingsEx через PowerShell Add-Type. Linux: xrandr --output <имя> --mode 1920x1080.
Шаг 1. Собрать (один раз на узел)
mkdir -p ~/.claude/scripts/bin && clang -O2 -framework ApplicationServices -o ~/.claude/scripts/bin/display_mode ~/.claude/skills/display-mode/display_mode.c && ~/.claude/scripts/bin/display_mode --selftest
SELFTEST OK обязателен. Swift не бери: на том Mac Pro он не совпадает с SDK и падает.
Шаг 2. Посмотреть режимы
~/.claude/scripts/bin/display_mode
Колонки W H PW PH HZ, звёздочка = текущий. W H = как выглядит интерфейс. PW = 2×W значит чёткий HiDPI (тяжело для удалёнки). PW = W значит настоящее разрешение, видеокарте и AnyDesk в 4 раза легче.
Шаг 3. Выбрать и поставить
Всегда все четыре числа, сперва pick (экран не трогает), потом set:
~/.claude/scripts/bin/display_mode pick 1600 900 1600 60
~/.claude/scripts/bin/display_mode set 1600 900 1600 60
set печатает строку отката ДО смены, пишет режим навсегда, перечитывает экран до 2 секунд и печатает OK или MISMATCH. Коды выхода: 0 = ок · 1 = нет режима / ошибка CoreGraphics / не встал · 2 = мусор в аргументах (60Hz, abc) · 3 = неоднозначно (две строки одинаково близки, смотри список). HZ пиши как в списке: 60, 59.875; берётся ближайшая частота, а не первая. Строку отката отдай оператору.
«Уменьши ещё» = следующая ступень вниз в том же формате, что сейчас (16:9 → 16:9). 4:3 (1600×1200, 1280×960) на широком мониторе растягивает картинку, бери только по прямой просьбе.
Лесенка 16:9 на 4K-мониторе: 1920×1080 → 1600×900 → 1344×756 → 1280×720 → 1024×576.
Шаг 4. Доказать вторым способом
system_profiler SPDisplaysDataType | grep -E 'Resolution|UI Looks'
screencapture -x "$TMPDIR/s.png" && sips -g pixelWidth -g pixelHeight "$TMPDIR/s.png"
Оба обязаны показать выбранный размер.
What ships with it
1 file 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.
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.
- yesterday Changed 31d56408ecce
- 14d ago First seen · 68 lines · 115 tokens per session scan A d8b2c0925172
display-mode is a skill published in the GitHub repository tonydzi/second-brain-starter-kit (12 stars, last pushed 3d ago), licensed MIT. It adds 115 tokens to every session and 1,472 once invoked, about $0.0005 per session on Opus 5.5. 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 2026-10-08.
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