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 OutThisLife/brooklyn-skills --skill ui-onlygit clone --depth 1 https://github.com/OutThisLife/brooklyn-skillsWrote 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/outthislife/brooklyn-skills/ui-only)<a href="https://agentmods.dev/skills/outthislife/brooklyn-skills/ui-only"><img src="https://agentmods.dev/badge/skills/outthislife/brooklyn-skills/ui-only/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/outthislife/brooklyn-skills/ui-only"><img src="https://agentmods.dev/badge/skills/outthislife/brooklyn-skills/ui-only.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00078 | $0.00367 |
| Opus 5.5 | $0.00031 | $0.00147 |
| Sonnet 5.5 | $0.00016 | $0.00073 |
| Haiku 4.5 | $0.00008 | $0.00037 |
Grade A, and why
ui-only 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 2mo 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.
What it actually says
UI Only
When you're changing how something looks or interacts: get the UI right first. Don't burn turns on tsc, lint, or commit until they say it's good.
Don't run yet
Until they like the UI (or explicitly say to clean/commit):
tsc/ typecheck /npm run buildas a finish step- eslint / prettier / biome
- full test suites just to greenlight a commit
git commit/git push/ opening the PR as done
Dev server, screenshots, and targeted runs needed to see or use the UI are fine. Don't start a dev server the user already has running — assume it's up unless told otherwise. Keep debug logging in place while something's still broken; remove it only once it works.
Do this instead
- Change the UI.
- Show it (or tell them how to look).
- Take feedback and iterate.
- When they say it's good / lgtm / clean it / commit it, then run checks,
use
clean, commit, and do whatever else the repo needs.
If you're not sure whether to keep iterating, ask.
Scope
Any UI surface (web, desktop, TUI). Skip for backend-only work.
For primitives and tokens, also use ui-system.
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.
- 2mo ago First seen · 43 lines · 78 tokens per session scan A 28c6e26ede5b
ui-only is a skill published in the GitHub repository OutThisLife/brooklyn-skills (209 stars, last pushed 7d ago), licensed MIT. It adds 78 tokens to every session and 367 once invoked, about $0.0003 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 2026-08-30.
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