# Halowerk Tempo – Document Modern Image Format Share Check

> Halowerk Tempo – Document Modern Image Format Share Check is a paid API for AI agents from tempo.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Checks the proportion of modern image formats used in a document object on a given URL.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/bildformat/dokument
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-tempo-document-modern-image-format-share-check-0f15fbd8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rj_Ppjr3QwByClklpEXAv

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 halowerk-tempo-document-modern-image-format-share-check-0f15fbd8 -d '<json body>'
```

Example prompt: Can you check what share of images in the document at https://example.com/report.html are using modern formats like WebP or AVIF?

## When to prefer this

Use this endpoint when you need to specifically audit the modern image format share within a document object (e.g. an HTML page or document URL), as opposed to checking images, videos, or other media object types. It is ideal for web performance audits, CMS quality checks, and pre-deployment optimization reviews where image format modernity is a key metric.

## Known failure modes

- URL is not publicly accessible — returns an error or empty result
- Document contains no images — ratio may be zero or undefined
- CSS selector matches zero elements — first matching object used as fallback
- URL is malformed or exceeds 2048 characters — validation error
- Non-HTML document types may not be parseable
- Network timeout reaching the target URL

## How this service works

Prüft am Objekt dokument den Befund Anteil moderner Bildformate.

## Output

Returns a performance finding indicating the proportion (share/ratio) of images within the target document that use modern image formats (e.g. WebP, AVIF), along with supporting detail about the document object inspected.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "ziel": {
   "oneOf": [
    {
     "type": "string",
     "maxLength": 2048,
     "minLength": 1,
     "description": "Öffentliche HTTP(S)-Adresse; bei DNS-Befunden Domain oder öffentliche IP."
    },
    {
     "type": "object",
     "required": [
      "adresse"
     ],
     "properties": {
      "adresse": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "selektor": {
       "type": "string",
       "maxLength": 240,
       "minLength": 1,
       "description": "CSS-Selektor: genau ein Objekt, sonst erster Treffer des Objektfilters."
      },
      "vergleich": {
       "type": "string",
       "maxLength": 2048,
       "description": "Öffentliche Vergleichsadresse für Link-, Sitemap- oder Sprachbefunde."
      },
      "user_agent": {
       "type": "string",
       "pattern": "^[A-Za-z0-9_-]{1,80}$"
      },
      "dkim_selektor": {
       "type": "string",
       "pattern": "^[A-Za-z0-9_-]{1,63}$"
      }
     },
     "additionalProperties": false
    }
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-tempo-document-modern-image-format-share-check-0f15fbd8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tempo.halowerk.com](https://www.zero.xyz/host/tempo.halowerk.com/llms.txt)