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Table Captions — Empty Value Report
x402
Table Captions — Empty Value Report 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 an HTML page or supplied HTML string and reports which table caption elements have empty or missing values, optionally filtered by attribute and search term.
Price / call$0.01
Success—
StatusUnknown
How this service works
Table captions — Empty value report: Empty value report for Table captions. 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 empty value report result.
Output
Returns a structured empty value report identifying which table caption elements in the parsed HTML have empty, blank, or missing text content, optionally scoped to a specific attribute name/value pair and filtered by a search term. The result includes details about the affected caption elements and any previously provided texts for comparison.
Example use cases
Accessibility audit for empty captions
“I have this HTML snippet from our product listing page — can you run an empty value report on all table captions with the 'id' attribute set to 'main-caption' and look for the term 'product'? I want to know which captions are blank so we can fix accessibility issues.”
Content QA before publishing
“Before we publish this HTML template, check it for any table captions that are empty or missing text — search for the term 'report' and check the 'class' attribute. Here's the full HTML to inspect: <!doctype html><html><body><table><caption class="report-header"></caption></table></body></html>”
Regression check against previous caption texts
“We updated our HTML table layout and I want to verify no captions went blank compared to last version. Can you do an empty value report on these new captions, searching for 'summary' and using the 'data-label' attribute, and compare against our previous caption texts: ['Q1 Summary', 'Q2 Summary']?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-bx-web-captions-empty?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, static-parse audit of table caption emptiness in a known HTML document or public webpage. It is ideal for content QA pipelines, accessibility audits, and regression checks where JavaScript rendering is not required and you need a bounded, affordable ($0.01) single-call report scoped to caption elements specifically.
Side effects
- URL is inaccessible or returns non-200 response — report cannot be generated
- HTML exceeds 100,000 character limit — request rejected
- Attribute pattern does not match required regex — validation error
- JavaScript-rendered content not captured — only static HTML is parsed
- No table captions found in HTML — empty result set returned
- Both url and html omitted — no content to parse
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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