# Table Captions — Duplicate Attribute Values Finder

> Table Captions — Duplicate Attribute Values Finder 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).

Scans HTML table caption elements to find duplicate values of a specified attribute, returning a bounded list of repeated occurrences

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-captions-attribute-duplicates?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/table-captions-duplicate-attribute-values-finder-a60f37e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uTrRKyzL6-u_oUEXeAGvW

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability table-captions-duplicate-attribute-values-finder-a60f37e1 -d '<json body>'
```

Example prompt: Check this page at https://example.com/report for any table captions that share the same 'id' attribute value — I want to know which captions have a duplicate id like 'sample'.

## When to prefer this

Choose this endpoint when you need a lightweight, static-parse audit of HTML table caption elements specifically for duplicate attribute values — particularly useful for accessibility audits, HTML validation pipelines, or pre-publish QA checks where you want to catch repeated id, class, or custom attributes on caption tags without needing JavaScript rendering or full browser execution.

## Known failure modes

- URL is inaccessible or returns a non-200 status, causing no content to be parsed
- HTML exceeds 100,000 character limit, triggering a rejection
- Attribute name does not match the required pattern (must start with a letter, max 50 chars)
- No table captions exist in the provided HTML, resulting in an empty result
- JavaScript-rendered captions are not detected since only static HTML is parsed
- Invalid URL format causes immediate input validation failure

## How this service works

Table captions — Duplicate attribute values: Duplicate 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 duplicate attribute values result.

## Output

Returns a bounded result listing table caption elements in the HTML where the specified attribute carries a duplicate value, including the repeated attribute value, the matching caption texts, and any overlap with previously seen texts provided in the request.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><table><caption id=\"sample\">Example product guide</caption><tr><td>value</td></tr></table></body></html>",
   "maxLength": 100000
  },
  "term": {
   "type": "string",
   "default": "product",
   "maxLength": 100,
   "minLength": 1
  },
  "attribute": {
   "type": "string",
   "default": "id",
   "pattern": "^[a-zA-Z][a-zA-Z0-9:_-]{0,49}$",
   "maxLength": 50
  },
  "previous_texts": {
   "type": "array",
   "items": {
    "type": "string",
    "default": "",
    "maxLength": 1000
   },
   "default": [
    "Older example"
   ],
   "maxItems": 200,
   "minItems": 0
  },
  "attribute_value": {
   "type": "string",
   "default": "sample",
   "maxLength": 200
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/table-captions-duplicate-attribute-values-finder-a60f37e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)