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Level-Four Headings Text Length Ranking
x402
Level-Four Headings 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).
Ranks H4 heading text by length from a given webpage URL or raw HTML, optionally filtered by attribute and compared against previous texts.
Price / call$0.01
Success—
StatusUnknown
How this service works
Level-four headings — Text length ranking: Text length ranking for Level-four headings. 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 listing the H4 headings found on the page (from URL or HTML), ordered by character/text length, optionally scoped by a specified HTML attribute and value, and compared against any previously supplied heading texts.
Example use cases
SEO heading length audit
“Rank all the H4 headings on https://mystore.com/products by text length so I can see which ones are too long or too short for SEO — compare them against last month's headings: ['Product overview', 'Key features list'].”
Content consistency check for docs
“Here's some raw HTML from our documentation page — can you rank the H4 headings by text length, focusing on those with the attribute data-kind set to 'section', so I can spot any headings that are way out of proportion?”
Competitor heading analysis
“Pull the H4 headings from https://competitor.com/blog and rank them by text length, comparing against our own headings ['Our quick guide', 'Getting started fast'] — I want to see how their heading lengths compare to ours.”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-bx-web-h4-rank?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to specifically rank H4 headings by text length from a static webpage or raw HTML snippet. It is ideal for content audits, SEO analysis, documentation consistency checks, or comparing heading lengths across versions. Use it over a generic scraper when you need pre-built heading-specific extraction and ranking without additional processing logic.
Side effects
- URL is inaccessible or returns non-200 status — no headings extracted
- Page requires JavaScript rendering — static parser returns empty result
- No H4 headings found matching the specified attribute/value filter
- HTML input exceeds 100,000 character limit — request rejected
- URL string exceeds 2,048 character limit
- Term parameter is empty or missing — validation error
- Attribute pattern does not match required regex — request rejected
- Page behind login or paywall — content not accessible
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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