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Table Captions — Distinct Attribute Values
x402
Table Captions — Distinct Attribute Values 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).
Extracts all distinct values of a specified HTML attribute from <caption> elements on a web page or supplied HTML snippet.
Price / call$0.01
Success—
StatusUnknown
How this service works
Table captions — Distinct attribute values: Distinct attribute values 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 distinct attribute values result.
Output
Returns a bounded set of distinct values for the specified HTML attribute found across all matching <caption> elements on the target page or HTML, filtered to those related to the provided term, and excluding any values already seen in previous_texts.
Example use cases
Audit caption IDs on data tables
“Can you fetch https://docs.example.com/data-tables and list all the distinct 'id' attribute values on the table caption elements that contain the term 'report'?”
Extract data category labels from captions
“Here's some HTML — can you find all the unique 'data-category' attribute values from the table captions that mention 'inventory'? Here's the HTML: <!doctype html><html><body><table><caption data-category='electronics'>Electronics inventory</caption></table></body></html>”
Deduplicate caption class names across crawl
“I've already seen class names like 'summary-table' and 'overview'. Can you check https://reports.example.com/annual and get any new distinct 'class' attribute values from table captions mentioning 'annual' that I haven't collected yet?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-bx-web-captions-attribute-values?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to enumerate distinct HTML attribute values specifically from <caption> elements in tables, either from a live URL or supplied HTML, without needing JavaScript rendering. Prefer this over generic scraping tools when your use case is narrowly scoped to table caption attributes, you want deduplication against a known list, and you only need static HTML parsing at low cost per call.
Side effects
- URL is unreachable or returns non-2xx status — no results returned
- HTML content exceeds 100,000 character limit — request rejected
- No table caption elements found matching the term — empty result set
- Attribute pattern validation failure (must start with a letter, alphanumeric/colon/underscore/hyphen) — request rejected
- JavaScript-rendered content not accessible — only static HTML parsed
- Malformed or missing URL and no HTML provided — error response
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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