# Textarea Defaults — Adjacent Word-Pair Frequency

> Textarea Defaults — Adjacent Word-Pair Frequency is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Extracts adjacent word-pair (bigram) frequencies from textarea elements on a web page or supplied HTML, filtered by a specific term and textarea attribute.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-textareas-bigrams?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/textarea-defaults-adjacent-word-pair-frequency-99a0cdf8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ATPxB7rZPvX5cauFpoEtw

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 textarea-defaults-adjacent-word-pair-frequency-99a0cdf8 -d '<json body>'
```

Example prompt: Analyze the adjacent word-pair frequencies in the textarea with id 'sample' on https://example.com/product-guide, looking for pairs containing the word 'product', and compare against these previous texts: ['Older example guide'].

## When to prefer this

Choose this endpoint when you need lightweight, static extraction of bigram frequencies specifically from HTML textarea elements — particularly when you want to track or compare word-pair patterns in form default content over time. It is ideal for content audits, QA workflows, and competitive analysis where JavaScript rendering is not required and you can target a specific textarea by attribute.

## Known failure modes

- URL is unreachable or returns non-200 status — no content to parse
- Specified textarea attribute/value combination not found in the page — empty or null result
- HTML payload exceeds 100,000 character limit — request rejected
- Term not found in any textarea content — zero-frequency result returned
- JavaScript-rendered content not available — only static HTML is parsed
- Malformed HTML input — parser may return partial or unexpected results

## How this service works

Textarea defaults — Adjacent word-pair frequency: Adjacent word-pair frequency for Textarea defaults. 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 adjacent word-pair frequency result.

## Output

Returns bounded adjacent word-pair (bigram) frequency data extracted from the matching textarea element on the target page or HTML, showing how often each word pair adjacent to the specified term appears in the textarea's content, with optional comparison against previously supplied text snapshots.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><textarea id=\"sample\" data-kind=\"example\">Example product guide</textarea></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/textarea-defaults-adjacent-word-pair-frequency-99a0cdf8/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)