# Aside Blocks — Distinct Value Extraction

> Aside Blocks — Distinct Value Extraction 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).

Extracts distinct (unique) attribute values from HTML <aside> elements on a given webpage or supplied HTML, filtered by a search term.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-asides-unique?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-distinct-value-extraction-59c3406d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wuau33OYoDxjyrdrX2GE_

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-distinct-value-extraction-59c3406d -d '<json body>'
```

Example prompt: Can you pull all the distinct 'data-kind' attribute values from the aside blocks on https://example.com/docs/overview, filtering for asides related to 'tutorial', and skip any you've already seen like 'intro'?

## When to prefer this

Use this endpoint when you need to collect unique attribute values specifically from HTML <aside> elements (sidebars, callouts, supplementary content blocks) with deduplication built in, and you have a static HTML page or a URL that doesn't require JavaScript to render. Prefer this over generic HTML scrapers when your task is specifically scoped to aside blocks and you want only distinct values relative to a prior seen list.

## Known failure modes

- URL is behind a login wall or requires JavaScript rendering — static parser returns empty results
- No aside elements found matching the term or attribute filter — returns empty list
- URL is unreachable or returns a non-200 status — fetch failure error
- HTML input exceeds 100,000 character limit — request rejected
- attribute parameter doesn't match pattern ^[a-zA-Z][a-zA-Z0-9:_-]{0,49}$ — validation error
- previous_texts array exceeds 200 items — request rejected

## How this service works

Aside blocks — Distinct value extraction: Distinct value extraction 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 distinct value extraction result.

## Output

Returns a bounded set of distinct (deduplicated) attribute values extracted from <aside> HTML elements matching the given term and attribute filter, parsed statically from the provided URL or raw HTML without JavaScript rendering.

## 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-distinct-value-extraction-59c3406d/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)