# Articles — Duplicate Value Report

> Articles — Duplicate 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 2026-10-15).

Scans a webpage or supplied HTML to identify duplicate values of a specified attribute across article elements, comparing against a list of previously seen values.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-articles-duplicates?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/articles-duplicate-value-report-bd3bed3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ALAnBy2DrOOm_pWMhNewU

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 articles-duplicate-value-report-bd3bed3e -d '<json body>'
```

Example prompt: Check this page https://example.com/blog for duplicate 'id' attribute values across all article elements, comparing against these previously seen IDs: ['post-1', 'post-2', 'post-3'] — report any duplicates found.

## When to prefer this

Choose this endpoint when you need to detect duplicate HTML attribute values (such as 'id', 'data-kind', or custom attributes) specifically within article elements on a static webpage or a supplied HTML fragment, especially when comparing against a known set of previously encountered values. It is best suited for content auditing pipelines, CMS deduplication checks, or multi-page crawl workflows where you accumulate a list of seen values and want to flag conflicts. Avoid it if you need JavaScript rendering, login-protected pages, or full-site crawling.

## Known failure modes

- URL is unreachable or returns a non-200 response — endpoint cannot fetch the page
- HTML exceeds 100,000 character limit — request rejected
- Attribute name does not match the required pattern (must start with a letter, alphanumeric/colon/underscore/hyphen) — validation error
- URL and HTML both empty — no content to scan
- previous_texts list exceeds 200 items — request rejected
- Page requires JavaScript rendering — static parser will miss dynamically loaded articles

## How this service works

Articles — Duplicate value report: Duplicate value report for Articles. 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 value report result.

## Output

Returns a duplicate value report indicating which article attribute values on the page or in the supplied HTML match values already seen in the previous_texts list, effectively flagging repeated or conflicting attribute values among article elements.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><article id=\"sample\" data-kind=\"example\">Example product guide</article></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/articles-duplicate-value-report-bd3bed3e/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)