# tempo.halowerk.com – TLS-Aushandlungszeit für Stylesheet

> tempo.halowerk.com – TLS-Aushandlungszeit für Stylesheet 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 TLS negotiation time (TLS handshake duration) for a stylesheet resource loaded from a given public URL.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/tls-zeit/stylesheet
- 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-com-tls-aushandlungszeit-f-r-stylesheet-cf934328
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XXw7rBkb5NDICrxoGqNTx

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-tls-aushandlungszeit-f-r-stylesheet-cf934328 -d '<json body>'
```

Example prompt: Check how long the TLS handshake takes when loading the main stylesheet from https://example.com/assets/main.css — I want to know if TLS negotiation is causing a slowdown.

## When to prefer this

Use this endpoint when you specifically need to isolate and measure the TLS handshake duration for a stylesheet (CSS) resource, as opposed to other timing metrics (DNS, TTFB, connection setup) or other resource types (fonts, images, iframes). It is ideal for diagnosing TLS-related slowdowns in stylesheet loading as part of frontend performance audits.

## Known failure modes

- URL is not publicly accessible or returns a non-2xx status — endpoint may return an error or no timing data
- URL does not point to a stylesheet resource — result may be unexpected or flagged
- TLS is not used (HTTP-only URL) — TLS timing may be zero or unavailable
- CSS selector matches zero elements — first match or error returned
- Request times out due to slow or unreachable target server

## How this service works

Prüft am Objekt stylesheet den Befund TLS-Aushandlungszeit.

## Output

Returns the measured TLS negotiation (handshake) time for the specified stylesheet resource, indicating how long the TLS handshake phase takes when fetching that CSS asset from a public 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-tls-aushandlungszeit-f-r-stylesheet-cf934328/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)