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Canonical URL Declarations — Text Length Ranking
x402
Canonical URL Declarations — Text Length Ranking is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).
Parses a web page or HTML snippet to extract canonical URL declarations and ranks the matched element's text by length against a list of previous texts.
Price / call$0.01
Success—
StatusUnknown
How this service works
Canonical URL declarations — Text length ranking: Text length ranking for Canonical URL declarations. One public HTTPS page or supplied HTML; static parsing, no JavaScript rendering, login or access bypass. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one bounded text length ranking result.
Output
Returns a bounded text length ranking result indicating where the canonical URL element's extracted text falls in length relative to the provided list of previous texts, along with the rank position and relevant length metrics.
Example use cases
SEO canonical tag audit over time
“Parse https://myshop.com/shoes and find the canonical link element with id 'canonical-main', then rank its text length against these previous snapshots: ['Old canonical text', 'Even older text'] — use 'shoes' as the term so I can track how the canonical declaration has changed.”
Validate canonical tag in HTML draft
“I have a draft HTML file — here it is: <!doctype html><html><head><link rel='canonical' href='https://example.com/page' id='can1'></head><body></body></html> — check the canonical element with attribute id='can1' and rank its text length against ['Previous draft text'] using the term 'page'.”
Benchmark canonical text length across releases
“For the page at https://docs.mysite.com/api-reference, find the canonical declaration element where data-version='v2', use 'api' as the search term, and rank its text length against these past release values: ['v1 canonical text', 'v0 canonical text'] so I can see if it's gotten longer.”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-bx-web-canonical-rank?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, static parse of a single page's canonical URL HTML element and want to rank its text length against a historical or comparative list of texts — particularly useful for SEO monitoring, regression tracking of canonical tags, or validating canonical declarations in HTML drafts without needing JavaScript rendering or full browser execution.
Side effects
- URL is unreachable or returns non-200 HTTP status — parsing fails with no result
- Page requires JavaScript rendering — static parser returns empty or incomplete canonical data
- No element matches the specified attribute and attribute_value — ranking cannot be performed
- HTML input exceeds 100,000 character limit — request rejected
- Previous texts array exceeds 200 items — request rejected
- Malformed HTML input — parser may return unexpected or empty results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| html | string | |
| term | string | |
| attribute | string | |
| previous_texts | array | |
| attribute_value | string |
Tags
x402
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