# tempo.halowerk.com Stylesheet Byte Transfer Size Check

> tempo.halowerk.com Stylesheet Byte Transfer Size Check 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 transferred byte size of a stylesheet resource at a given URL.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/gewicht/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-stylesheet-byte-transfer-size-check-12394ba7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pSwxZ8U9u-ri-1qJQhz_o

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-stylesheet-byte-transfer-size-check-12394ba7 -d '<json body>'
```

Example prompt: Can you check the transferred byte size of the stylesheet at https://example.com/styles/main.css and tell me how heavy it is?

## When to prefer this

Choose this endpoint when you specifically need to measure the transferred byte size (network weight) of a stylesheet resource at a public URL, as part of a web performance audit or optimization workflow. It is distinct from checking page load time, script size, or DNS resolution — each metric has its own dedicated sibling endpoint on this service. Prefer this over generic web scraping or curl-based approaches when you need a structured, normalized performance metric for CSS weight.

## Known failure modes

- URL is not publicly accessible or returns a non-2xx HTTP status
- Target URL does not serve a stylesheet (wrong content type)
- URL exceeds the 2048 character maximum length
- CSS selector matches no element or multiple elements (first match used)
- Network timeout when fetching the remote resource
- Invalid or malformed URL provided

## How this service works

Prüft am Objekt stylesheet den Befund übertragene Bytemenge.

## Output

Returns a performance finding object indicating the transferred byte size (weight) of the specified stylesheet resource, fetched from the given public URL. The result reflects actual bytes transferred over the network for that CSS asset.

## 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-stylesheet-byte-transfer-size-check-12394ba7/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)