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 oborchers/fractional-cto --skill whitespace-densitygit clone --depth 1 https://github.com/oborchers/fractional-ctoWrote 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/oborchers/fractional-cto/whitespace-density)<a href="https://agentmods.dev/skills/oborchers/fractional-cto/whitespace-density"><img src="https://agentmods.dev/badge/skills/oborchers/fractional-cto/whitespace-density/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/oborchers/fractional-cto/whitespace-density"><img src="https://agentmods.dev/badge/skills/oborchers/fractional-cto/whitespace-density.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 | $0.00096 | $0.01479 |
| Opus 5.5 | $0.00038 | $0.00592 |
| Sonnet 5.5 | $0.00019 | $0.00296 |
| Haiku 4.5 | $0.00010 | $0.00148 |
Grade A, and why
whitespace-density 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 5d 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 — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Start with Too Much Whitespace, Then Remove Until It Feels Right
Whitespace is not empty space -- it is active structure. Research by Wichita State University found that increased whitespace between paragraphs and around margins improved comprehension by 20%. The Refactoring UI principle is clear: start with too much whitespace, then remove until it feels right. Never start tight and try to add space later.
Macro vs Micro Whitespace
Macro whitespace is the space between major sections, around the content frame, and between layout regions. It establishes page-level breathing room and visual grouping.
Micro whitespace is the space within components -- between a label and its input, between list items, between an icon and its text. It determines readability and component density.
Both must be intentional. Macro whitespace without micro whitespace produces elegant-looking layouts with unreadable components. Micro whitespace without macro whitespace produces readable components floating in a cramped sea.
The 4px/8px Spacing Scale
Define a constrained spacing scale using a 4px base unit. Every spacing value in the system must come from this scale.
:root {
--space-1: 4px; /* micro: icon-text gap */
--space-2: 8px; /* micro: inline element gap */
--space-3: 12px; /* micro: related element gap */
--space-4: 16px; /* standard component padding */
--space-5: 20px; /* component internal sections */
--space-6: 24px; /* between related components */
--space-8: 32px; /* between distinct components */
--space-10: 40px; /* compact section gap */
--space-12: 48px; /* standard section gap */
--space-16: 64px; /* generous section gap */
--space-24: 96px; /* premium section gap */
--space-32: 128px; /* hero/premium section gap */
}
Whitespace Ratio Benchmarks
| Context | Whitespace % | Example |
|---|---|---|
| News sites | 20--30% | CNN, Reuters |
| SaaS dashboards | 25--35% | Datadog, Grafana |
| Corporate / SaaS marketing | 35--45% | Stripe docs, GitHub |
| Premium / luxury | 50--65% | Apple product pages |
| Apple homepage hero | 60--70% | apple.com |
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.
- 5d ago First seen · 120 lines · 96 tokens per session scan A bd40c3756037
whitespace-density is a skill published in the GitHub repository oborchers/fractional-cto (32 stars, last pushed 5d ago), licensed MIT. It adds 96 tokens to every session and 1,479 once invoked, about $0.0004 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 2026-10-13.
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