# Button Labels — Duplicate Attribute Values Finder

> Button Labels — Duplicate Attribute Values Finder is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Scans a webpage or HTML snippet to find button elements that share a duplicate value for a specified attribute, filtered by a search term and a reference value.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-buttons-attribute-duplicates?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/button-labels-duplicate-attribute-values-finder-cdf336ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3UQL_BAaLjQoR5cR_6ELA

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-duplicate-attribute-values-finder-cdf336ec -d '<json body>'
```

Example prompt: Check https://example.com for any button elements that have duplicate values for the 'id' attribute — I'm looking specifically for buttons that share the value 'submit' and want to see if there are any that also appeared in my previous scan: ['Old submit button'].

## When to prefer this

Use this endpoint when you need to statically audit a public webpage or HTML fragment specifically for duplicate attribute values among button elements, without needing JavaScript execution or authentication. It is ideal for accessibility QA (e.g. duplicate IDs), frontend consistency checks, and automated audits of button markup where you have a known reference attribute value to compare against.

## Known failure modes

- URL is unreachable or returns non-200 status — no content to parse
- HTML exceeds 100,000 character limit — request rejected
- Attribute name does not match pattern ^[a-zA-Z][a-zA-Z0-9:_-]{0,49}$ — validation error
- No buttons found on the page matching the term or attribute value — empty result
- Page requires JavaScript rendering — static parser returns incomplete DOM
- Too many previous_texts items (over 200) — request rejected

## How this service works

Button labels — Duplicate attribute values: Duplicate attribute values 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 duplicate attribute values result.

## Output

Returns a bounded result listing button elements on the page or in the HTML that have duplicate values for the specified attribute, filtered by the provided search term and reference attribute value, including any overlaps with previously seen button texts.

## 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-duplicate-attribute-values-finder-cdf336ec/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)