Discover / css-design-calc.x402tookit.com

CSS Design Calc

■ Challenge detected

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

Listed price
$0.02
Challenge detected
1 of the last check
Median response
178 ms
Last checked
21 Oct, 00:26 UTC
In our index since
21 Oct 2026

Endpoint

curl -i https://css-design-calc.x402tookit.com/aspect-ratio
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
12 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://css-design-calc.x402tookit.com

  • GET/clamp-fluidNo price listedGenerate a CSS clamp() that scales a size linearly between a min and max viewport width, in rem, with the exact slope.
  • GET/vertical-rhythmNo price listedSnap line-heights for font sizes to a baseline grid: baseline unit, lines per element, unitless line-height and margins.
  • GET/target-sizeNo price listedCheck a click or touch target against WCAG 2.2 target size (24 px AA, 44 px AAA) including the spacing exception.
  • GET/css-unit-convertNo price listedConvert a CSS length between px, rem, em, pt, pc, in, cm, mm, Q, vw, vh, vmin, vmax and % with your root and viewport sizes.
  • GET/line-lengthNo price listedEstimate characters per line from column width and font size and rate it for readability (45-75 ideal, WCAG max 80).
  • GET/grid-columnsNo price listedColumn and span widths for an N-column grid from container width, columns and gutter, or the container for a column width.
  • GET/golden-ratioNo price listedSplit a length into major and minor parts by the golden ratio (or silver, root-2, custom) with matching rectangle sizes.
  • GET/css-specificityNo price listedCSS selector specificity (ids, classes, types) per Selectors Level 4, including :is(), :not(), :where() and :has(); compare two.
  • GET/pixel-densityNo price listedScreen pixel density (PPI) from resolution and diagonal, physical size, CSS viewport at a device pixel ratio, and image widths.
  • GET/type-scaleNo price listedModular type scale: sizes in px and rem for steps below and above a base size, by named ratio (major third, golden) or number.
  • GET/aspect-ratioNo price listedAspect ratio of a width and height (simplified, nearest common ratio) or the missing side for a ratio, with CSS values.
  • GET/box-sizeNo price listedCSS box model sizes: content, padding, border and margin boxes from a width and height under content-box or border-box.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 12 of 12 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/css-design-calc.x402tookit.com

Recent checks

21 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.21 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
21 Oct, 00:26 UTCChallenge detected402178ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 21 Oct, 00:26 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for CSS Design Calc?

Its listed price is $0.02.

What payment terms does CSS Design Calc advertise?

The listing advertises x402, Arbitrum, Base, Polygon, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is CSS Design Calc listed?

In x402 Bazaar. Superstables first indexed it on 21 Oct 2026.

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