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Readability Content Extraction from HTML
x402
Readability Content Extraction from HTML is a paid API for AI agents from markup-tools.x402tookit.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-11-02).
Extracts the main article content from raw HTML using heuristic text-density and tag scoring, returning cleaned text, title, byline, and a confidence score.
Price / call$0.03
Success—
StatusUnknown
How this service works
Heuristic main-content extraction from supplied HTML by text density and tag scoring; returns text, title, byline, confidence.
Output
Returns a JSON object with: extracted plain text of the main content, page title, byline/author, confidence level (e.g. high/medium/low), word count, language, link density ratio, the HTML container element that was identified as main content (tag, id, class), counts of elements removed by tag or class/id heuristics, an optional summary, verdict string, and degraded flag indicating partial extraction. Null fields are returned when data is unavailable.
Example use cases
News article body extraction
“Here's the full HTML of this Reuters article — can you pull out just the main article text and the author name, and let me know how confident you are that you got the right content block?”
Blog post ingestion for RAG pipeline
“I'm building a knowledge base and need the clean readable text, title, and word count from this blog post HTML — strip out all the nav, ads, and sidebars and just give me the article body.”
Content quality audit for scraped pages
“I scraped this HTML from a product review page — can you extract the main content text and give me the confidence score and link density so I can tell if the page is mostly article or mostly navigation links?”
Technical details
Endpoint
GEThttps://markup-tools.x402tookit.com/readability-extract?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you have raw HTML and need to isolate the main readable content without running a full browser or JavaScript engine. It is ideal for server-side pipelines that scrape static or server-rendered HTML and need article text for downstream NLP, summarization, or indexing. Prefer this over generic HTML-to-text converters when you also need metadata like byline, title, confidence score, and container identification — the scoring heuristics make it more robust than simple tag stripping.
Side effects
- HTML longer than 20,000 characters returns 400 Bad Request
- Highly JavaScript-rendered pages with minimal static HTML may yield low confidence or null text
- Pages with no discernible content block may return null text with low confidence score
- Malformed HTML may cause degraded=true with partial results
- Missing or ambiguous byline results in null byline field
- Payment failure or missing x402 payment returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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