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URL Content Diff Comparator
x402
URL Content Diff Comparator is a paid API for AI agents from x402-zadenworks.zaden-gaming.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Compares the text content of two URLs and reports paragraphs unique to each side, word count delta, and whether the pages are identical.
Price / call$0.02
Success—
StatusUnknown
How this service works
Fourteen pay-per-call web tools for AI agents, billed in USDC on Base with no account or API key. START WITH /audit -- one call returns a complete page health check (SEO + structured data + accessibility, optionally plus links and sitemap) with a single score and one worst-first findings list. The parts are also sold individually. SITE AUDIT: /seo (on-page SEO and meta tags), /links (broken links), /sitemap (robots.txt and XML sitemap crawlability), /structured (JSON-LD and social preview tags), /a11y (WCAG accessibility) -- each scored 0-100 with a prioritised issue list. READING: /read (clean markdown), /snap (screenshot, PDF or rendered HTML), /tables (every HTML table as structured JSON), /verify (does a claim actually appear on this page). MONITORING: /watch (has this page changed), /compare (what differs between two pages). Plus /rank (best x402 service for a task) and /batch (several operations behind one payment).
Output
Returns a structured diff with: a boolean indicating whether the two pages are identical, a word count delta (numeric difference), and arrays of paragraphs that appear exclusively in URL A versus exclusively in URL B, allowing the caller to understand exactly how the two pages diverge textually.
Example use cases
Editorial change audit between versions
“I updated our About page — can you compare https://acme.com/about-old and https://acme.com/about to show me exactly which paragraphs are new and which were removed, and tell me the word count difference?”
Competitor content divergence check
“Compare https://competitor-a.com/pricing and https://competitor-b.com/pricing and tell me which paragraphs are unique to each page and whether they're saying fundamentally the same things.”
Syndication duplicate detection
“I want to know if our article at https://ourblog.com/article-123 and the version at https://partnernews.com/article-456 are identical or if the partner changed any content — show me what's different.”
Technical details
Endpoint
POSThttps://x402-zadenworks.zaden-gaming.workers.dev/compareWhen to prefer
Choose this endpoint when you need a structured, paragraph-level textual diff between two live web pages — especially when you care about which specific passages are unique to each side and want a word count delta. Prefer it over manual scraping + diffing when you need a single API call that handles fetching and comparison atomically. It's well-suited for editorial audits, syndication checks, and A/B content comparisons.
Side effects
- One or both URLs are unreachable or return non-200 status — error returned with which URL failed
- Pages are behind authentication/paywalls — content may be incomplete or empty
- JavaScript-heavy pages may not render fully if JS execution is limited
- Very large pages may time out or be truncated
- URLs pointing to non-text content (images, PDFs, binaries) will yield no meaningful diff
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"urlA": "https://example.com",
"urlB": "https://example.org",
"onlyInA": [],
"onlyInB": [],
"identical": true,
"wordCountA": 20,
"wordCountB": 20,
"wordCountDelta": 0
}
}Tags
x402
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