# Unordered Lists — Invisible Character Flags

> Unordered Lists — Invisible Character Flags is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Parses a webpage or HTML snippet to detect invisible/hidden Unicode characters within unordered list items, flagged by a search term and optional element attribute filter.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-unordered-lists-unicode?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/unordered-lists-invisible-character-flags-6d81ed6c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rjBbpxVv-d5mGVWBU-w_r

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 unordered-lists-invisible-character-flags-6d81ed6c -d '<json body>'
```

Example prompt: Check the unordered list with id 'nav-menu' on https://example.com/products for any invisible or hidden unicode characters — search for items related to 'guide' and flag anything suspicious.

## When to prefer this

Choose this endpoint when you need to detect hidden or invisible Unicode characters specifically within HTML unordered list elements, either from a live URL or a raw HTML string. It is ideal for content integrity auditing, detecting steganographic text, or validating scraped list data before downstream processing. Prefer it over general text analyzers when your target data is structured as HTML bullet lists and you need a specialized preset tuned for Unicode flag detection.

## Known failure modes

- URL is unreachable or returns non-200 status — parsing fails with no content
- HTML exceeds 100,000 character limit — request rejected
- JavaScript-rendered content not available since only static HTML is parsed
- Invalid attribute name pattern causes schema validation error
- No matching ul element found for given attribute/value pair — empty result
- Term string too short (below minLength of 1) causes validation error

## How this service works

Unordered lists — Invisible character flags: Invisible character flags for Unordered lists. 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 invisible character flags result.

## Output

Returns a bounded result indicating which unordered list items contain invisible or hidden Unicode characters, flagged against the provided search term and optional HTML attribute filter. Output identifies specific characters or positions where anomalies are detected within the list.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><ul id=\"sample\"><li>Example product guide</li></ul></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/unordered-lists-invisible-character-flags-6d81ed6c/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)