# Strong-Emphasis Text Length Ranking

> Strong-Emphasis Text Length Ranking is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Parses a public webpage or supplied HTML and returns a text-length ranking for <strong> elements, optionally filtered by a search term or attribute, compared against a list of previous texts.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-strong-rank?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strong-emphasis-text-length-ranking-0460c439
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OKLcNUEYYSIj0aQo7Pt8k

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-ranking-0460c439 -d '<json body>'
```

Example prompt: Can you rank the strong-emphasis text by length on https://example.com/products — search for the term 'guide', filter by the element with id 'sample', and compare it against these previous texts: 'Old product guide', 'Quick start manual'?

## When to prefer this

Choose this endpoint when you need a lightweight, low-cost static parse of <strong>/<b> emphasis elements on a public webpage to rank their text by character length, especially when tracking how a specific element's text length changes over time relative to a history of previous values. Prefer it over full DOM analysis tools when JavaScript rendering is not needed and you only care about bold/strong text length ordering.

## Known failure modes

- URL is not publicly accessible or returns non-200 status — no content to parse
- HTML content exceeds 100,000 character limit — request rejected
- No <strong> elements found matching the specified attribute/term — empty result
- JavaScript-rendered content not available since only static parsing is used
- Term string too short (below minLength of 1) or too long (above 100 characters) — validation error
- previous_texts array exceeds 200 items — request rejected
- Attribute name does not match required pattern — validation error

## How this service works

Strong-emphasis text — Text length ranking: Text length ranking 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 ranking result.

## Output

Returns a bounded text-length ranking result indicating where the matched <strong> element's text falls relative to previously seen texts, including the extracted text content and its character count ranking position.

## 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-ranking-0460c439/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)