# Level-five Headings Text Length Statistics

> Level-five Headings Text Length Statistics is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Extracts and returns text length statistics for all H5 (level-five heading) elements found in a given webpage or HTML snippet.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-h5-lengths?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/level-five-headings-text-length-statistics-82f087f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yNxgzp8R2FJrwD-Uhwewg

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 level-five-headings-text-length-statistics-82f087f2 -d '<json body>'
```

Example prompt: Can you pull text length statistics for all the H5 headings on https://example.com/docs — I'm looking at the element with id 'main-guide' and want to compare against my previous heading 'Old product guide'?

## When to prefer this

Choose this endpoint when you specifically need text length statistics for H5 (level-five) heading elements from a static HTML page or supplied HTML string. It is purpose-built for H5 heading analysis using a specialised preset, making it more targeted than a general-purpose scraper. Best when you need cheap, fast, per-call statistics ($0.01 USDC) without needing JavaScript rendering or authenticated sessions.

## Known failure modes

- URL is unreachable or returns a non-200 status — no H5 headings extracted
- HTML exceeds 100,000 character limit — request rejected
- No H5 headings found on the page — empty or zero statistics returned
- JavaScript-rendered content not captured — static parsing only, dynamic H5 elements may be missed
- Invalid attribute name pattern — request rejected with validation error
- Term parameter missing or empty — request rejected

## How this service works

Level-five headings — Text length statistics: Text length statistics for Level-five headings. 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 text length statistics result.

## Output

A bounded text length statistics result for H5 heading elements found on the given page or in the supplied HTML, including measurements such as character counts and related statistics for the matched level-five headings.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><h5 id=\"sample\" data-kind=\"example\">Example product guide</h5></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/level-five-headings-text-length-statistics-82f087f2/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)