# Footer Blocks Structured Extraction

> Footer 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 footer HTML blocks on a public webpage, filtering by a search term and HTML attribute/value pair.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-footers-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/footer-blocks-structured-extraction-bd3e8183
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nnIz3OjpTNplqKZkQ7jpt

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 footer-blocks-structured-extraction-bd3e8183 -d '<json body>'
```

Example prompt: Fetch the footer blocks from https://example.com and extract all elements with id='footer-nav' that mention the term 'contact', and skip any blocks we've already seen like 'Home' or 'About'.

## When to prefer this

Choose this endpoint when you need to extract structured data specifically from footer sections of a static HTML page, filtering by a known HTML attribute and search term. Ideal for static pages that do not require JavaScript rendering. Best when you already know the attribute (e.g. id, class, data-kind) and value that identifies the footer block you want. Not suitable for dynamic single-page apps or pages behind authentication.

## Known failure modes

- URL is not publicly accessible or returns a non-200 status — extraction fails
- Page requires JavaScript rendering — static parser cannot execute JS, elements may be missing
- No footer elements matching the attribute/value pair are found — empty result returned
- HTML input exceeds 100,000 character limit — request rejected
- Term parameter is empty or missing — validation error
- Attribute name does not match the allowed pattern — request rejected
- URL is malformed or unreachable — network error

## How this service works

Footer blocks — Structured extraction: Structured extraction for Footer 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 footer block(s) from the page or HTML, filtered by the specified search term and HTML attribute/value pair. Returns up to one result per call, structured as parsed data from the footer section.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><footer id=\"sample\" data-kind=\"example\">Example product guide</footer></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/footer-blocks-structured-extraction-bd3e8183/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)