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 bencium/bencium-marketplace --skill typographygit clone --depth 1 https://github.com/bencium/bencium-marketplaceWrote 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/bencium/bencium-marketplace/typography)<a href="https://agentmods.dev/skills/bencium/bencium-marketplace/typography"><img src="https://agentmods.dev/badge/skills/bencium/bencium-marketplace/typography/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/bencium/bencium-marketplace/typography"><img src="https://agentmods.dev/badge/skills/bencium/bencium-marketplace/typography.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, 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 Memory Poisoning · line 27 Skill injects content designed to persist in agent memory or context across interactions. Persistent injection can alter agent behavior long after the initial interaction.Fix: Do not allow untrusted input to persist in agent memory or context. Validate all content before storing and implement memory isolation between sessions.
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 | $0.00200 | $0.03625 |
| Opus 5 | $0.00100 | $0.01813 |
| Sonnet 5 | $0.00040 | $0.00725 |
| Haiku 4.5 | $0.00020 | $0.00363 |
Grade A, and why
ui-typography 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 10d 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 — 345 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UI Typography Skill
Attribution
These rules are distilled from Matthew Butterick's Practical Typography (https://practicaltypography.com). Butterick is a typographer, writer, and type designer whose work bridges professional typography and everyday digital writing. Thank you, Matthew, for making this knowledge accessible and encyclopedic. If you find this skill valuable, consider supporting his work directly.
Mode of Operation
These are permanent rules — not trends, not opinions. They come from centuries of typographic practice, validated by how the human eye reads. They do not go out of style.
ENFORCEMENT (default): When generating ANY UI with visible text, apply every rule automatically. Use correct HTML entities, proper CSS. Do not ask permission. Do not explain. Just produce correct typography.
AUDIT: When reviewing existing code or design, identify violations and provide before/after fixes.
Reference files (read when generating CSS or looking up entities):
references/css-templates.md— Full CSS baseline template, responsive patterns, OpenType featuresreferences/html-entities.md— Complete entity table with all characters and codes
Characters
Quotes and Apostrophes — Always Curly
Straight quotes are typewriter artifacts. Use “ ” for double, ‘ ’ for single.
Apostrophes always point down — identical to closing single quote ’. Smart-quote engines wrongly
insert opening quotes before decade abbreviations ('70s) and word-initial contractions ('n'). Fix with
explicit ’.
The <q> tag auto-applies curly quotes when <html lang="en"> is set.
Hawaiian okina points upward — it's a letter, not an apostrophe. Use opening single quote or anglicize.
JSX/React Implementation Warning
Unicode escape sequences (\u2019, \u201C, etc.) do NOT work in JSX text content. They render
as literal characters — the user sees \u2019 instead of a curly apostrophe. This is because JSX text
between tags is treated as string literals by the transpiler, not as JavaScript expressions.
What ships with it
2 files 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.
- 10d ago First seen · 345 lines · 200 tokens per session scan A aa76312d8fbf
ui-typography is a skill published in the GitHub repository bencium/bencium-marketplace (420 stars, last pushed 10d ago), licensed MIT. It adds 200 tokens to every session and 3,625 once invoked, about $0.0010 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.
Other skills, from other repositories
前端设计师
A design guide for creating distinctive, high-quality front-end interfaces, meaning the parts of websites and applications that people see and use. It encourages deliberate layouts, restrained colors, precise spacing, and typography instead of generic AI-generated patterns.
设计大师
A Chinese-language design skill for creating high-fidelity HTML prototypes, interactive demos, slide decks, animations, visualizations, and design variations. HTML is used as the production tool for these visual outputs.
frontend-ui-engineering
Builds production-quality, accessible, responsive user-facing UIs. Use when building or modifying interfaces and pages, creating components, implementing layouts, meeting WCAG accessibility requirements, managing state, or when the output needs to look and feel production-quality rather than AI-generated.
playground
Creates interactive HTML playgrounds — self-contained single-file explorers that let users configure something visually through controls, see a live preview, and copy out a prompt. Use when the user asks to make a playground, explorer, or interactive tool for a topic.
frontend-design
Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Helps with aesthetic direction, typography, and making choices that don't read as templated defaults.
baseline-ui
Quickly deslop UI code by fixing spacing, hierarchy, typography, and small layout issues. Use when the interface needs a fast cleanup or polish pass.