# Button Labels — Adjacent Word-Pair Frequency

> Button Labels — 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 2026-10-16).

Analyzes a webpage or HTML snippet to compute the frequency of adjacent word pairs (bigrams) found in button labels.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-buttons-bigrams?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/button-labels-adjacent-word-pair-frequency-c8cd7424
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4BYeheQ3gUbj9HvVJDS1d

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 button-labels-adjacent-word-pair-frequency-c8cd7424 -d '<json body>'
```

Example prompt: Analyze the button labels on https://example.com and tell me which adjacent word pairs (bigrams) appear most frequently — I want to know how often the word 'product' shows up next to other words in button text.

## When to prefer this

Choose this endpoint when you need to quantify which two-word sequences co-occur in button label text on a static webpage or HTML fragment. It is purpose-built for UI copy analysis, CTA pattern research, and language auditing of button elements specifically — not for general page text or other HTML element types. Prefer this over generic text analysis tools when your target is button label bigrams and you want a lightweight, per-call result without JavaScript rendering overhead.

## Known failure modes

- URL is unreachable or returns non-200 status — no content to parse
- HTML exceeds 100,000 character limit — request rejected
- JavaScript-rendered buttons not captured — only static HTML is parsed
- No buttons found in the provided HTML or page — empty bigram result
- Term parameter missing or too short — validation error
- Attribute pattern does not match expected format — schema validation failure

## How this service works

Button labels — Adjacent word-pair frequency: Adjacent word-pair frequency for Button labels. 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 a bounded result containing the frequency count of adjacent word pairs (bigrams) found within button labels on the specified webpage or HTML. The response includes how often each two-word sequence appears in button label text, filtered or contextualized by the supplied search term and attribute options.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><button id=\"sample\" data-kind=\"example\">Example product guide</button></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/button-labels-adjacent-word-pair-frequency-c8cd7424/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)