# tempo.halowerk.com DNS Resolution Time Check for API Response

> tempo.halowerk.com DNS Resolution Time Check for API Response 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 the api-antwort (API response) object of a given target URL or domain.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/dns-zeit/api-antwort
- 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-api-response-5d5d0b13
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VXz1WdV5RexExxKzMEZjh

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-api-response-5d5d0b13 -d '<json body>'
```

Example prompt: Can you check how long DNS resolution is taking for the API at https://api.example.com and give me the timing result?

## When to prefer this

Use this endpoint when you specifically need to isolate and measure the DNS resolution time component of an API endpoint's network performance. It is distinct from connection time, TTFB, or TLS handshake checks (covered by sibling endpoints). Choose this when diagnosing whether slow DNS lookup is contributing to API latency, or when auditing the network performance of API endpoints specifically rather than general web pages, images, or stylesheets.

## Known failure modes

- Invalid or unreachable target URL returns an error
- Domain that does not resolve returns a DNS failure finding
- Target URL exceeds maxLength of 2048 characters
- Non-public or private IP address rejected
- Malformed user_agent string (must match pattern ^[A-Za-z0-9_-]{1,80}$) causes validation error
- Network timeout if the target is unreachable

## How this service works

Prüft am Objekt api-antwort den Befund DNS-Auflösungszeit.

## Output

Returns a performance finding (Befund) object describing the DNS resolution time measured for the api-antwort (API response) object of the specified target. This includes the timing metric indicating how long DNS lookup took for the given domain or URL.

## 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-api-response-5d5d0b13/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)