# Strong-Emphasis Text Duplicate Attribute Values Checker

> Strong-Emphasis Text Duplicate Attribute Values Checker is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-26).

Parses a webpage or HTML snippet to find duplicate attribute values across strong-emphasis elements, filtered by a search term and target attribute.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-strong-attribute-duplicates?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strong-emphasis-text-duplicate-attribute-values-checker-9940e652
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cRJ72MPBTKs18cRsXmJlN

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 strong-emphasis-text-duplicate-attribute-values-checker-9940e652 -d '<json body>'
```

Example prompt: Can you check https://example.com/product-guide for any strong elements that have duplicate values for the 'id' attribute, filtering results to those containing the term 'product'?

## When to prefer this

Choose this endpoint when you need to detect duplicate attribute values specifically on HTML strong/bold emphasis elements — useful for accessibility audits (duplicate IDs), CMS deduplication, or frontend QA. Prefer this over general HTML attribute checkers when your target is specifically strong-emphasis markup and you want lightweight static parsing without JavaScript overhead.

## Known failure modes

- URL is unreachable or returns a non-200 status — no content to parse
- HTML payload exceeds 100,000 character limit — request rejected
- Attribute name does not match pattern ^[a-zA-Z][a-zA-Z0-9:_-]{0,49}$ — validation error
- No strong elements found matching the given term — empty result
- Page requires JavaScript rendering which is not supported — incomplete or missing content
- Term parameter missing or empty — request rejected

## How this service works

Strong-emphasis text — Duplicate attribute values: Duplicate attribute values for Strong-emphasis text. 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 strong-emphasis text elements that have duplicate values for the specified attribute, scoped to elements matching the provided search term. May include the text content, attribute value, and occurrence details for each duplicate found.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><strong id=\"sample\" data-kind=\"example\">Example product guide</strong></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/strong-emphasis-text-duplicate-attribute-values-checker-9940e652/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)