# Strong-Emphasis Text Length Statistics

> Strong-Emphasis 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 2026-10-26).

Extracts and computes text length statistics for <strong> (strong-emphasis) elements on a given webpage or HTML snippet via static parsing.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-strong-lengths?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strong-emphasis-text-length-statistics-7922b03c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1FMu5qvMb3yucC0-u0wi0

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 strong-emphasis-text-length-statistics-7922b03c -d '<json body>'
```

Example prompt: Can you analyze the text length statistics for all the strong-emphasis elements on https://example.com/product-guide — I want to know how long the bold text chunks are, and filter by elements with the id attribute set to 'highlight'?

## When to prefer this

Choose this endpoint when you need quick, low-cost static analysis of <strong> element text lengths on a public webpage or supplied HTML snippet, without needing JavaScript rendering. Ideal for SEO audits, content length benchmarking, or comparing emphasis text across page versions using the previous_texts comparison feature.

## Known failure modes

- URL is unreachable or returns non-200 status — parsing fails with an error
- HTML content exceeds 100,000 character limit — request rejected
- No strong-emphasis elements found matching the specified attribute/value — empty or null result
- URL requires JavaScript rendering or login — static parser returns incomplete or no results
- Invalid attribute name format (not matching pattern) — validation error
- term parameter too short (below minLength of 1) — validation error

## How this service works

Strong-emphasis text — Text length statistics: Text length statistics for Strong-emphasis text. 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

Returns text length statistics for strong-emphasis (<strong>) elements found on the provided URL or HTML — including character counts and related length metrics for matching elements, bounded to one result 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><strong id=\"sample\" data-kind=\"example\">Example product guide</strong></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/strong-emphasis-text-length-statistics-7922b03c/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)