# Time Labels — Invisible Character Flags

> Time Labels — 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).

Detects and flags invisible Unicode characters within HTML <time> elements on a web page or supplied HTML snippet.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-web-times-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/time-labels-invisible-character-flags-c82cfa26
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-wyCvTUv73MyuI4vHkGAS

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 time-labels-invisible-character-flags-c82cfa26 -d '<json body>'
```

Example prompt: Check the page at https://example.com/product-guide for any invisible Unicode characters hiding inside the <time> elements — look for the element with id 'published' and flag anything suspicious compared to older labels like 'January 2024'.

## When to prefer this

Choose this endpoint when you specifically need to detect invisible or zero-width Unicode characters embedded in HTML <time> elements, such as for security audits, content integrity checks, or detecting unicode steganography in timestamps. It is distinct from general text unicode scanners because it targets the <time> HTML element specifically and can accept either a live URL or raw HTML.

## Known failure modes

- URL is inaccessible or returns non-200 status — parsing fails with no content
- HTML does not contain any <time> elements matching the specified attribute/value — empty result
- JavaScript-rendered time labels not visible due to static-only parsing
- attribute value or term mismatch results in no matched elements
- HTML payload exceeds 100,000 character limit — request rejected
- Malformed HTML prevents reliable parsing

## How this service works

Time labels — Invisible character flags: Invisible character flags for Time 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 invisible character flags result.

## Output

Returns a bounded result indicating whether invisible Unicode characters were found within the targeted <time> element(s), including flags identifying the specific invisible characters detected and their positions within the label text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "default": "",
   "maxLength": 2048
  },
  "html": {
   "type": "string",
   "default": "<!doctype html><html><head></head><body><time id=\"sample\" data-kind=\"example\">Example product guide</time></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/time-labels-invisible-character-flags-c82cfa26/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)