# Aside Blocks — Duplicate Attribute Values

> Aside Blocks — Duplicate Attribute Values 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).

Parses a web page or HTML snippet to find aside elements that share duplicate values for a specified attribute, filtered by a search term.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-asides-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/aside-blocks-duplicate-attribute-values-7f831bb4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TtrMTFTy-9aqBEOrP6fOW

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 aside-blocks-duplicate-attribute-values-7f831bb4 -d '<json body>'
```

Example prompt: Check the HTML page at https://example.com/docs for any aside blocks that have duplicate values for the 'data-kind' attribute, filtering for the term 'product'.

## When to prefer this

Use this endpoint when you need to detect duplicate attribute values specifically within aside HTML elements on a static (no JavaScript rendering) page or HTML fragment. It is ideal for content auditing, QA pipelines, or accessibility checks where aside block uniqueness matters. Prefer it over generic HTML validators when you need targeted aside-scoped attribute duplication analysis with term filtering.

## Known failure modes

- URL is unreachable or returns a non-200 status
- HTML exceeds the 100,000 character limit
- Attribute name does not match the pattern ^[a-zA-Z][a-zA-Z0-9:_-]{0,49}$
- No aside elements found on the page
- Term not found within any aside element
- Previous texts array exceeds 200 items

## How this service works

Aside blocks — Duplicate attribute values: Duplicate attribute values for Aside blocks. 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 set identifying aside HTML elements whose specified attribute holds duplicate values, filtered by the provided search term, based on static parsing of the supplied URL or HTML.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><aside id=\"sample\" data-kind=\"example\">Example product guide</aside></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/aside-blocks-duplicate-attribute-values-7f831bb4/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)