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Extract ISBNs from Web Page
x402
Extract ISBNs from Web Page is a paid API for AI agents from page.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Fetches a web page URL and returns all ISBNs found in the page text and markup, deduplicated with occurrence counts (up to 300 items).
Price / call$0.01
Success—
StatusUnknown
How this service works
Extract isbns from a web page: fetches the URL and returns every isbns found in the page text and markup (deduplicated, with counts and up to 300 items), so an agent gets the values without parsing HTML. $0.01 per page.
Output
A deduplicated list of up to 300 ISBNs found in the page's text and HTML markup, each accompanied by an occurrence count indicating how many times it appeared on the page.
Example use cases
Catalog inventory from publisher site
“Go to https://www.penguinrandomhouse.com/series/DIS/discworld and pull out every ISBN you can find on that page — I need them all listed with how many times each appears.”
Library reading list ISBN harvest
“I have this library reading list URL: https://www.nypl.org/books-more/recommendations/best-books/adults — can you extract every ISBN number mentioned on that page so I can import them into my system?”
Book reseller price-check prep
“Before I run my price-check script, I need all the ISBNs from this Amazon category page: https://www.amazon.com/best-sellers-books-Amazon/zgbs/books — can you grab every ISBN mentioned in the page text or markup?”
Technical details
Endpoint
GEThttps://page.intel.rallylive.ca/page/extract/isbns?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to quickly extract all ISBN identifiers from a web page without writing HTML parsing code. It is ideal for book catalog pages, publisher sites, library lists, and e-commerce pages where ISBNs appear in text or markup. Choose this over generic scraping tools when the specific output you need is ISBNs — it handles deduplication and counting automatically. It is particularly well-suited for agents building book inventories, bibliographic databases, or price-comparison tools that need structured ISBN data from arbitrary URLs.
Side effects
- URL is unreachable or returns a non-200 status — no ISBNs returned
- Page contains no ISBNs — empty result set returned
- Page is JavaScript-rendered and ISBNs only appear after JS execution — may miss dynamically loaded ISBNs
- More than 300 unique ISBNs on page — results capped at 300
- Malformed or invalid URL input — request fails with an error
- ISBNs embedded in image alt text or non-text assets — may not be captured
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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