# Halowerk Tempo – Modern Image Format Share Check for Text/Font Objects

> Halowerk Tempo – Modern Image Format Share Check for Text/Font Objects 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 text/font-related objects on a given web resource.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/bildformat/schrift
- 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-modern-image-format-share-check-for-text-font-objects-ee67dfd9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QpLsC1Y2nSAwk-sRZNpGB

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-modern-image-format-share-check-for-text-font-objects-ee67dfd9 -d '<json body>'
```

Example prompt: Can you check how much of the text/font area on https://example.com uses modern image formats like WebP or AVIF? I want to know the proportion of modern formats for text-related objects on that page.

## When to prefer this

Use this endpoint specifically when you need to audit the modern image format adoption rate for text or font objects on a webpage, as distinct from images in general, stylesheets, scripts, or video objects. It is ideal for targeted web performance and image optimization audits focused on typography-related content areas.

## Known failure modes

- URL is not publicly accessible or returns non-200 status
- CSS selector matches no elements or multiple ambiguous elements
- Resource does not contain any image assets in text/font objects
- Invalid or malformed URL input
- Target page blocks crawlers or returns bot-detection responses
- Network timeout reaching the target resource

## How this service works

Prüft am Objekt schrift den Befund Anteil moderner Bildformate.

## Output

Returns a finding (Befund) indicating the proportion/share of modern image formats (e.g. WebP, AVIF) detected among images associated with text/font objects on the inspected URL or resource. Typically includes a ratio or percentage metric and may include pass/fail or scoring information.

## 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-modern-image-format-share-check-for-text-font-objects-ee67dfd9/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)