# tempo.halowerk.com – Document Transferred Byte Size Check

> tempo.halowerk.com – Document Transferred Byte 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 checks the transferred byte size (weight) of a document resource loaded by a web page.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/gewicht/dokument
- 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-document-transferred-byte-size-check-6bf221dc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WdqRZvffC7C99u2khH2r8

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-document-transferred-byte-size-check-6bf221dc -d '<json body>'
```

Example prompt: Can you check how many bytes are being transferred for the document resource at https://example.com/report.pdf — I want to know if it's bloating our page load?

## When to prefer this

Use this endpoint when you specifically need to measure the transferred byte size (network weight) of a document resource on a given URL — ideal for web performance auditing, page weight optimization, or detecting document size regressions. Prefer this over generic HTTP HEAD checks when you need structured performance findings tied to a specific resource type (document) within a page's asset graph.

## Known failure modes

- URL is unreachable or returns non-2xx status — error returned with no byte measurement
- URL points to a non-document resource type — result may be empty or misclassified
- CSS selector matches no element or multiple elements — first match or error used
- Invalid URL format (too long, not public, malformed) — validation error returned
- Rate limit or payment failure — 402 or 429 response

## How this service works

Prüft am Objekt dokument den Befund übertragene Bytemenge.

## Output

Returns a performance finding indicating the transferred byte size (weight in bytes) of the document resource fetched from the given URL, along with relevant metadata about the measurement.

## 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-document-transferred-byte-size-check-6bf221dc/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)