# tempo.halowerk.com DNS Resolution Time Check for Fonts

> tempo.halowerk.com DNS Resolution Time Check for Fonts is a paid API for AI agents from tempo.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Measures and returns the DNS resolution time for a font resource (Schrift) at a given URL or domain.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/dns-zeit/schrift
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tempo-halowerk-com-dns-resolution-time-check-for-fonts-3f1a79fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xzfGQKfi_8h2i5DODejTy

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 tempo-halowerk-com-dns-resolution-time-check-for-fonts-3f1a79fe -d '<json body>'
```

Example prompt: Can you check the DNS resolution time for the font file at https://fonts.example.com/myfont.woff2 and tell me how long the DNS lookup is taking?

## When to prefer this

Use this endpoint when you specifically need to isolate and measure the DNS resolution phase timing for font (Schrift) resources, as opposed to overall page load or connection time. Prefer this over generic performance tools when you need per-asset DNS timing data for fonts in isolation, and when you require a paid, on-demand probing service via HTTP rather than running your own DNS tooling.

## Known failure modes

- Invalid or unreachable URL returns an error finding
- Domain does not resolve — DNS lookup failure reported
- Malformed input schema returns validation error
- Private or localhost addresses rejected as non-public targets
- Timeout if DNS resolution takes excessively long

## How this service works

Prüft am Objekt schrift den Befund DNS-Auflösungszeit.

## Output

Returns a performance finding object containing the measured DNS resolution time (DNS-Auflösungszeit) for the specified font resource or domain, indicating how long the DNS lookup phase takes in milliseconds.

## 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/tempo-halowerk-com-dns-resolution-time-check-for-fonts-3f1a79fe/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)