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Table Header Cells — Attribute Presence Check
x402
Table Header Cells — Attribute Presence Check is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Checks whether a specified HTML attribute (and optionally a specific attribute value) is present on table header cells matching a search term in a given webpage or HTML snippet.
Price / call$0.01
Success—
StatusUnknown
How this service works
Table header cells — Attribute presence check: Attribute presence check for Table header cells. 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 attribute presence check result.
Output
Returns a bounded attribute presence check result indicating whether the specified attribute (and optionally its value) exists on table header cells that match the provided search term, parsed statically from the supplied URL or raw HTML without JavaScript rendering.
Example use cases
Accessibility audit on product table
“Can you check if the table header cell that contains 'Price' on https://shop.example.com/products has a 'scope' attribute? I want to make sure the table is accessible.”
Verify data attribute on spec sheet
“I have this HTML snippet of a spec table — can you tell me if the header cell containing 'Memory' has a 'data-col' attribute with value 'ram'? Here's the HTML: <!doctype html><html><body><table><tr><th data-col="ram">Memory</th></tr></table></body></html>”
QA check for id attribute on report header
“Look at https://internal.example.com/report and check whether the table header cell with the word 'Region' has an 'id' attribute set to 'region-header'.”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-bx-web-table-headers-attribute-presence?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cheap, fast, statically-parsed check for a specific HTML attribute on table header cells — ideal for accessibility audits, QA pipelines, or automated markup validation where JavaScript rendering is not required and you only need a presence/value check rather than full table extraction.
Side effects
- URL is unreachable or returns non-200 status — no HTML to parse
- No table header cells found in the page or HTML snippet
- Search term does not match any th element text — empty result
- Attribute name fails regex validation (must start with a letter)
- HTML exceeds 100,000 character limit — input rejected
- URL exceeds 2,048 character limit — input rejected
- Page requires JavaScript rendering — static parser returns incomplete DOM
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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