# Tempo Halowerk – Verbindungsaufbauzeit Seite

> Tempo Halowerk – Verbindungsaufbauzeit Seite 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).

Measures the connection setup time (TCP/TLS handshake) for a web page URL and returns the latency finding.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/verbindungszeit/seite
- 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/tempo-halowerk-verbindungsaufbauzeit-seite-597cced3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QsE7CSVN5peBnaYqw602z

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-verbindungsaufbauzeit-seite-597cced3 -d '<json body>'
```

Example prompt: Can you check the connection setup time for https://example.com and tell me how long it takes to establish a connection to that page?

## When to prefer this

Use this endpoint when you need to specifically measure the connection establishment time (TCP/TLS handshake) for a web page, as opposed to other performance metrics like TTFB, DNS resolution time, or byte transfer size. Prefer this over generic page speed tools when you need granular, per-object connection latency data for a page-level target.

## Known failure modes

- Invalid or unreachable URL returns an error finding
- Non-public or private IP addresses rejected
- Malformed URL schema triggers validation error
- CSS selector matching no element may fall back to first match or error
- Timeout if the target server is unresponsive

## How this service works

Prüft am Objekt seite den Befund Verbindungsaufbauzeit.

## Output

Returns a performance finding (Befund) indicating the connection setup time (Verbindungsaufbauzeit) measured for the target web page, including timing metrics such as TCP handshake and potentially TLS negotiation duration.

## 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-verbindungsaufbauzeit-seite-597cced3/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)