# Tempo Halowerk TLS Handshake Time Checker for Script Objects

> Tempo Halowerk TLS Handshake Time Checker for Script Objects is a paid API for AI agents from tempo.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Measures and reports the TLS negotiation time for a script resource on a given web page or URL target.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/tls-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-tls-handshake-time-checker-for-script-objects-5d42e48f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rwFZ_jNV17eJOjlKrpyJn

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-tls-handshake-time-checker-for-script-objects-5d42e48f -d '<json body>'
```

Example prompt: Check the TLS handshake time for the script at https://example.com/app.js — I want to know how long TLS negotiation takes for that resource.

## When to prefer this

Use this endpoint when you specifically need to isolate and measure TLS negotiation time for a script resource on a web page, distinct from overall page load, TTFB, or DNS resolution timing. It is ideal for diagnosing TLS-specific latency in JavaScript asset delivery.

## Known failure modes

- Target URL is unreachable or returns an error — no TLS timing data returned
- CSS selector matches no script element or matches multiple — first match used or error returned
- Private/non-public IP address or domain provided — rejected as invalid target
- TLS handshake fails entirely (e.g. certificate error) — error state returned with no timing
- Malformed URL or exceeding maxLength — validation error

## How this service works

Prüft am Objekt schrift den Befund TLS-Aushandlungszeit.

## Output

Returns a performance finding containing the measured TLS negotiation/handshake duration for the identified script object on the target URL, allowing comparison and monitoring of TLS latency.

## 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-tls-handshake-time-checker-for-script-objects-5d42e48f/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)