# Disclosure Blocks Structured Extraction

> Disclosure Blocks Structured Extraction 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).

Extracts structured data from HTML <details>/<summary> disclosure blocks on a public webpage or supplied HTML, filtered by a search term and attribute value.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-details-items?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/disclosure-blocks-structured-extraction-812588ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4e29SPqV_7LBD-mJXaM7o

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 disclosure-blocks-structured-extraction-812588ad -d '<json body>'
```

Example prompt: Extract all disclosure blocks on https://example.com/faq that have a data-kind attribute equal to 'faq' and are related to the term 'shipping', and skip any you've already seen like 'Return Policy'.

## When to prefer this

Choose this endpoint when you need to extract structured content specifically from HTML <details>/<summary> disclosure blocks on a static, publicly accessible page, and you want to filter results by a specific HTML attribute (like id or data-*) and a keyword term. It is especially useful for deduplication across repeated crawls via the previous_texts parameter. Prefer it over generic scraping tools when the target content is in collapsible/disclosure HTML elements and you need a cheap, bounded, single-result extraction at $0.01 per call.

## Known failure modes

- URL is not publicly accessible or requires authentication — no content returned
- Page uses JavaScript rendering to populate disclosure blocks — static parser returns empty results
- No <details> element matches the specified attribute and attribute value — empty or null result
- HTML content exceeds 100,000 character limit — request rejected
- Term or attribute value pattern does not match any element — empty extraction
- Invalid attribute name format (must start with a letter, max 50 chars) — validation error

## How this service works

Disclosure blocks — Structured extraction: Structured extraction for Disclosure blocks. 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 structured extraction result.

## Output

A bounded structured extraction result containing the matched disclosure block's content and metadata — specifically the text or structured data found within the <details> element matching the given attribute, attribute value, and search term, filtered against previously seen texts.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><details id=\"sample\" data-kind=\"example\">Example product guide</details></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/disclosure-blocks-structured-extraction-812588ad/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)