ToolVet

CSS Design Calc

12 x402 APIs served from css-design-calc.x402tookit.com

Every listing from CSS Design Calc that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
12 x402 APIs
Passing at the latest check
8 of 12
Uptime, 30 days
61.9% on average across 12 listings
Price
$0.02 per call
Trust score
33 to 63, median 61
Paying wallets, 30 days
No usage data
Verified owner
None
Security findings
None found
Listed since
20 Oct 2026

No usage data. The x402 Bazaar reports paying wallets for the x402 APIs it lists; MCP servers and APIs submitted directly have none.

All 12 listings

Ranked by trust score.

  • 63trust
    Vertical RhythmCSS Design Calc

    Snap line-heights for font sizes to a baseline grid: baseline unit, lines per element, unitless line-height and margins.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 541 msPassing, checked 8 h ago
  • 63trust
    Golden RatioCSS Design Calc

    Split a length into major and minor parts by the golden ratio (or silver, root-2, custom) with matching rectangle sizes.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 527 msPassing, checked 7 h ago
  • 63trust
    Aspect RatioCSS Design Calc

    Aspect ratio of a width and height (simplified, nearest common ratio) or the missing side for a ratio, with CSS values.

    x402 APIOther
    $0.02per call on Polygon
    70.6% uptime, 530 msPassing, checked 9 h ago
  • 61trust
    Pixel DensityCSS Design Calc

    Screen pixel density (PPI) from resolution and diagonal, physical size, CSS viewport at a device pixel ratio, and image widths.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 518 msPassing, checked 3 h ago
  • 61trust
    Line LengthCSS Design Calc

    Estimate characters per line from column width and font size and rate it for readability (45-75 ideal, WCAG max 80).

    x402 APISearch & web
    $0.02per call on Polygon
    64.3% uptime, 525 msPassing, checked 2 h ago
  • 61trust
    Grid ColumnsCSS Design Calc

    Column and span widths for an N-column grid from container width, columns and gutter, or the container for a column width.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 516 msPassing, checked 3 h ago
  • 61trust
    Css SpecificityCSS Design Calc

    CSS selector specificity (ids, classes, types) per Selectors Level 4, including :is(), :not(), :where() and :has(); compare two.

    x402 APIOther
    $0.02per call on Polygon
    64.3% uptime, 511 msPassing, checked 29 min ago
  • 59trust
    Box SizeCSS Design Calc

    CSS box model sizes: content, padding, border and margin boxes from a width and height under content-box or border-box.

    x402 APIAI models & inference
    $0.02per call on Polygon
    57.1% uptime, 522 msPassing, checked 11 h ago
  • 34trust
    Clamp FluidCSS Design Calc

    Generate a CSS clamp() that scales a size linearly between a min and max viewport width, in rem, with the exact slope.

    x402 APIOther
    $0.02per call on Polygon
    55.6% uptime, 514 msFailing, checked 24 h ago
  • 33trust
    Type ScaleCSS Design Calc

    Modular type scale: sizes in px and rem for steps below and above a base size, by named ratio (major third, golden) or number.

    x402 APIOther
    $0.02per call on Polygon
    53.9% uptime, 486 msFailing, checked 18 h ago
  • 33trust
    Target SizeCSS Design Calc

    Check a click or touch target against WCAG 2.2 target size (24 px AA, 44 px AAA) including the spacing exception.

    x402 APIOther
    $0.02per call on Polygon
    53.9% uptime, 530 msFailing, checked 20 h ago
  • 33trust
    Css Unit ConvertCSS Design Calc

    Convert a CSS length between px, rem, em, pt, pc, in, cm, mm, Q, vw, vh, vmin, vmax and % with your root and viewport sizes.

    x402 APIDocuments & files
    $0.02per call on Polygon
    53.9% uptime, 520 msFailing, checked 20 h ago

Watch these listings in one feed

How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.