# tempo.halowerk.com – TTFB Check for Video

> tempo.halowerk.com – TTFB Check for Video 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 and reports the Time to First Byte (TTFB) for a given video resource URL.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/ttfb/video
- 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-ttfb-check-for-video-6106acd6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8BtT-kqzhQJlra5KvCr_E

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-ttfb-check-for-video-6106acd6 -d '<json body>'
```

Example prompt: Check the time to first byte (TTFB) for this video URL: https://cdn.example.com/video/intro.mp4 — I want to know how fast the server is responding before the video data starts streaming.

## When to prefer this

Use this endpoint when you specifically need to measure the server response latency (TTFB) for a video resource. It is purpose-built for video objects, as opposed to sibling endpoints that check TTFB for pages, iframes, or documents. Prefer this over generic HTTP probing tools when you want a structured, per-object performance finding with consistent output format.

## Known failure modes

- Invalid or unreachable video URL returns an error
- Non-public or firewall-protected URLs may time out
- Malformed URL schema causes validation failure
- Video resource not returning HTTP(S) responses causes probe failure
- Rate limiting if many requests are sent in quick succession

## How this service works

Prüft am Objekt video den Befund Zeit bis zum ersten Byte.

## Output

Returns a TTFB (Time to First Byte) measurement for the specified video resource, indicating how long it takes from the initial HTTP request to receiving the first byte of the video response from the server.

## 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-ttfb-check-for-video-6106acd6/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)