# Articles — Empty Value Report

> Articles — Empty 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 2026-10-21).

Scans an article element on a web page or supplied HTML for empty or missing attribute/text values and returns a bounded report

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-articles-empty?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/articles-empty-value-report-3404f684
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4R0SJFxlwPBdcoReomh6c

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-empty-value-report-3404f684 -d '<json body>'
```

Example prompt: Check this page for any article elements that have an empty 'data-kind' attribute — the URL is https://example.com/blog/post-1 and I'm looking for articles tagged with 'product'.

## When to prefer this

Use this endpoint when you need a quick, cheap static-parse check of a single public page or known HTML blob to detect empty or missing attribute values within article elements. Ideal for content quality pipelines, CMS audits, or pre-publish validation where you already have the HTML or a public URL and want a focused empty-value signal without full DOM rendering.

## Known failure modes

- URL is unreachable or returns a non-200 status — no content to parse
- HTML exceeds 100,000 character limit — request rejected
- Attribute name does not match the required pattern — validation error
- Term is missing or empty (minLength 1) — request rejected
- JavaScript-rendered content not present — static parser cannot see dynamically loaded articles
- No matching article elements found — report returns empty findings

## How this service works

Articles — Empty value report: Empty 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 empty value report result.

## Output

A bounded report indicating which article elements on the page or in the supplied HTML have empty or missing values for the specified attribute, filtered by the given search term and optionally compared against previously seen text values. Result is scoped to one page and one attribute check per call.

## 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-empty-value-report-3404f684/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)