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 skillmds/skillmd --skill cal-com-design-analysisgit clone --depth 1 https://github.com/skillmds/skillmdWrote 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/skillmds/skillmd/cal-com-design-analysis)<a href="https://agentmods.dev/skills/skillmds/skillmd/cal-com-design-analysis"><img src="https://agentmods.dev/badge/skills/skillmds/skillmd/cal-com-design-analysis/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/skillmds/skillmd/cal-com-design-analysis"><img src="https://agentmods.dev/badge/skills/skillmds/skillmd/cal-com-design-analysis.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 | $0.00097 | $0.07985 |
| Opus 5.5 | $0.00039 | $0.03194 |
| Sonnet 5.5 | $0.00019 | $0.01597 |
| Haiku 4.5 | $0.00010 | $0.00799 |
Grade A, and why
Cal.com-design-analysis 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 1mo 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 — 543 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Overview
Cal.com's marketing surface is a clean, friendly modern-SaaS interface — white canvas ({colors.canvas} — #ffffff) with black primary CTAs ({colors.primary} — #111111), custom Cal Sans display typography, and {colors.surface-card} (#f5f5f5) light-gray cards holding product UI fragments. The system reads as confidently engineered without trying to impress — every band has clear hierarchy, generous whitespace, and a single primary action.
Type voice splits cleanly into two roles: Cal Sans (the brand's custom geometric display face — used for h1, h2, h3, and hero headlines) and Inter (used for everything else — body, buttons, nav, captions). Cal Sans uses weight 600 with negative letter-spacing (-0.5px to -2px depending on size) — it feels modern, slightly condensed, distinctly Cal.com.
Component voltage comes from product UI fragments shown directly inside cards — calendar widgets, scheduling forms, automation diagrams, integration tiles. Cal.com doesn't paint marketing illustrations of the product; it shows the actual product chrome at small scale embedded in the marketing flow.
The footer flips to {colors.surface-dark} (#101010) — a deep near-black that visually closes every long-scroll page. The footer is the only dark surface in the system; everything above stays white-with-light-gray-cards.
Key Characteristics:
- White canvas with black primary CTA (
{colors.primary}— #111111). Buttons are{rounded.md}(8px) with confident weight-600 labels. Standard friendly-SaaS button. - Custom
Cal Sansdisplay typeface for headlines (substituted with Inter weight 600 here). Negative letter-spacing on display sizes — geometric, precise, slightly condensed. - Light-gray card surfaces (
{colors.surface-card}— #f5f5f5) for feature cards, testimonials, and pricing tiers (non-featured). The featured pricing tier flips to{colors.surface-dark}(the only dark card on light pages). - Product UI fragments embedded directly in cards — Cal.com shows real schedule pickers, calendar widgets, integration grids inside its marketing cards. Brand voltage from real product chrome at small scale.
- Nav-pill-group (
{component.nav-pill-group}) — a small pill-radius wrapper around grouped nav segments (e.g., the sub-nav switcher between product views). The pill wrapper is one of the system's signature interactive components. - Avatars are circular (
{rounded.full}), 36px diameter, used in testimonial rows and team-listing surfaces. - Footer is dark navy (
{colors.surface-dark}— #101010) with light text ({colors.on-dark-soft}— #a1a1aa). The dark footer closes every page even though the body above is white. - Spacing rhythm is
{spacing.section}(96px) between major bands — tight enough to feel modern-SaaS but generous enough to breathe. - Border radius is hierarchical:
{rounded.md}(8px) for buttons + inputs,{rounded.lg}(12px) for content cards,{rounded.xl}(16px) for the hero app-mockup container,{rounded.pill}for nav-pill-group + badges,{rounded.full}for avatars + icon buttons.
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.
- 1mo ago First seen · 543 lines · 97 tokens per session scan A 7dbb4d033e03
Cal.com-design-analysis is a skill published in the GitHub repository skillmds/skillmd (143 stars, last pushed 4d ago), licensed MIT. It adds 97 tokens to every session and 7,985 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 2026-09-19.
Cal.com-design-analysis compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| Cal.com-design-analysisskillmds/skillmd | Skill | 143 | 4d ago | MIT | A | 97 | Claude Code |
| frontendcode-yeongyu/lazycodex | Skill | 3.9k | yesterday | MIT | A | 79 | Codex |
| designlang-tokensManavarya09/design-extract | Skill | 4.8k | 2d ago | MIT | A | 30 | Claude Code |
| cli-anything-photoshopyb2460/harness-anything | Skill | 3.0k | 29d ago | MIT | A | 43 | Claude Code, Codex |
| app-screenshot-debugtermio-sh/termio | Skill | 785 | 5d ago | MIT | A | 161 | Claude Code, Codex |
| user-research-cookiycookiy-ai/user-research-skill | Skill | 1.6k | 5d ago | MIT | A | 154 | Claude Code, Codex |
| write-zot-themespatriceckhart/zot | Skill | 360 | yesterday | MIT | A | 23 | Claude Code, Codex |