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 marchatton/agent-skills --skill baseline-uigit clone --depth 1 https://github.com/marchatton/agent-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/marchatton/agent-skills/baseline-ui)<a href="https://agentmods.dev/skills/marchatton/agent-skills/baseline-ui"><img src="https://agentmods.dev/badge/skills/marchatton/agent-skills/baseline-ui.svg" alt="Measured on agentmods" 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 | $0.00019 | $0.00800 |
| Opus 5 | $0.00010 | $0.00400 |
| Sonnet 5 | $0.00004 | $0.00160 |
| Haiku 4.5 | $0.00002 | $0.00080 |
Grade A, and why
baseline-ui 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 7d 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.
This is a copy
92% identical to baseline-ui — 15 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Baseline UI
Source: ui-skills.com.
Enforces an opinionated UI baseline to prevent AI-generated interface slop.
How to use
- Use
baseline-uito apply these constraints to any UI work in this conversation. - For file review, provide a file path and output:
- violations (quote the exact line/snippet)
- why it matters (1 short sentence)
- a concrete fix (code-level suggestion)
Stack
- MUST use Tailwind CSS defaults unless custom values already exist or are explicitly requested
- MUST use
motion/react(formerlyframer-motion) when JavaScript animation is required - SHOULD use
tw-animate-cssfor entrance and micro-animations in Tailwind CSS - MUST use
cnutility (clsx+tailwind-merge) for class logic
Components
- MUST use accessible component primitives for anything with keyboard or focus behavior (
Base UI,React Aria,Radix) - MUST use the project’s existing component primitives first
- NEVER mix primitive systems within the same interaction surface
- SHOULD prefer
Base UIfor new primitives if compatible with the stack - MUST add an
aria-labelto icon-only buttons - NEVER rebuild keyboard or focus behavior by hand unless explicitly requested
Interaction
- MUST use an
AlertDialogfor destructive or irreversible actions - SHOULD use structural skeletons for loading states
- NEVER use
h-screen, useh-dvh - MUST respect
safe-area-insetfor fixed elements - MUST show errors next to where the action happens
- NEVER block paste in
inputortextareaelements
Animation
- NEVER add animation unless it is explicitly requested
- MUST animate only compositor props (
transform,opacity) - NEVER animate layout properties (
width,height,top,left,margin,padding) - SHOULD avoid animating paint properties (
background,color) except for small, local UI (text, icons) - SHOULD use
ease-outon entrance - NEVER exceed
200msfor interaction feedback - MUST pause looping animations when off-screen
- SHOULD respect
prefers-reduced-motion - NEVER introduce custom easing curves unless explicitly requested
- SHOULD avoid animating large images or full-screen surfaces
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.
- 7d ago First seen · 89 lines · 19 tokens per session scan A 615ac65dd37d
baseline-ui is a skill published in the GitHub repository marchatton/agent-skills (5 stars, last pushed 6mo ago), licensed MIT. It adds 19 tokens to every session and 800 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to baseline-ui, differing in 15 lines, and is treated as a copy.
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