Discover / publishing-calc.x402tookit.com

Publishing Calc

■ Challenge detected

Audiobook running time from a word count at about 9,300 words per hour (change it), as hours and clock time.

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

Endpoint

curl -i https://publishing-calc.x402tookit.com/audiobook-length
# 402 Payment Required: pay with an x402 client (USDC on Arbitrum),
# then send the same request again with the payment attached.
9 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://publishing-calc.x402tookit.com

  • GET/spine-widthNo price listedPrint book spine width in inches and mm from page count and paper type (white, cream, color) or your own thickness.
  • GET/page-countNo price listedPages from a word count at your words-per-page figure, rounded up, plus even page count and sheets for print.
  • GET/audiobook-lengthNo price listedAudiobook running time from a word count at about 9,300 words per hour (change it), as hours and clock time.
  • GET/print-royaltyNo price listedPrint book royalty per copy from list price, printing cost and royalty rate, plus break-even price and total.
  • GET/ebook-sizeNo price listedEstimate ebook file size in KB and MB from word count, image count and average image size (all adjustable).
  • GET/reading-timeNo price listedSilent reading time for a word count at your words-per-minute (default 238), as minutes and hours:minutes:seconds.
  • GET/trim-sizesNo price listedStandard US trade book trim sizes in inches and mm, or look up one size like 6x9 and its closest standard.
  • GET/cover-sizeNo price listedFull paperback cover width and height with bleed from trim size and page count, in inches, mm and pixels.
  • GET/chapter-balanceNo price listedSplit a total word count into N balanced chapters with exact per-chapter words, pages and reading minutes.

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

Showing 9 of 9 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/publishing-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 detected402211ms

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 Publishing Calc?

Its listed price is $0.02.

What payment terms does Publishing 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 Publishing Calc listed?

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

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