# Footer Blocks — Word Frequency Analyzer

> Footer Blocks — Word Frequency Analyzer is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).

Counts word frequency in the footer block of a given webpage or HTML snippet, optionally filtered by a specific term and HTML attribute.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-footers-words?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/footer-blocks-word-frequency-analyzer-580ca154
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nAECDbwQ0U9B8xQtv4eWV

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-word-frequency-analyzer-580ca154 -d '<json body>'
```

Example prompt: Can you count how often the word 'privacy' appears in the footer of https://example.com — use the footer element with id 'main-footer'?

## When to prefer this

Choose this endpoint when you need a fast, lightweight word frequency count specifically within a webpage's footer block, using static HTML parsing. It is ideal for SEO auditing, legal compliance checks (e.g. copyright notices), or brand consistency monitoring where footer text is the focus and JavaScript rendering is not required.

## Known failure modes

- URL is inaccessible or returns non-200 status
- No footer element matching the specified attribute/value is found
- HTML exceeds 100,000 character limit
- Term is empty or exceeds 100 characters
- Page requires JavaScript rendering to display footer content
- Login or authentication required to access the page

## How this service works

Footer blocks — Word frequency: Word frequency 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 word frequency result.

## Output

Returns a bounded word frequency result for the footer block of the provided URL or HTML, indicating how many times the specified term appears within the matched footer element. The analysis is based on static HTML parsing only — no JavaScript rendering or login is performed.

## 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-word-frequency-analyzer-580ca154/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)