# Tempo Halowerk TTFB Redirect Check

> Tempo Halowerk TTFB Redirect 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 time-to-first-byte (TTFB) for redirect (Weiterleitung) objects at a given URL, returning performance timing data.

## Facts

- Endpoint: POST https://tempo.halowerk.com/v1/pruef/tempo/ttfb/weiterleitung
- 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-ttfb-redirect-check-f90cf11e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3_N5KsKRBlyMYRsquIgvD

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-ttfb-redirect-check-f90cf11e -d '<json body>'
```

Example prompt: Can you check the time-to-first-byte for the redirect at https://example.com/old-page and tell me how long it takes to get the first byte after the redirect?

## When to prefer this

Choose this endpoint when you specifically need to measure the TTFB timing for a redirect (Weiterleitung) object, as opposed to a page, script, stylesheet, or other resource type. It is part of a suite of targeted performance probes on tempo.halowerk.com and is ideal for isolating redirect-specific latency in a web performance audit.

## Known failure modes

- Invalid or unreachable target URL returns an error
- Non-public or private IP addresses rejected
- URL exceeds maximum length of 2048 characters
- CSS selector matches zero elements, falls back to first match
- Target URL does not perform a redirect, potentially returning unexpected results
- Network timeout if target server is unresponsive

## How this service works

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

## Output

Returns a performance finding containing the measured time-to-first-byte (TTFB) for the redirect object at the specified URL, including timing data specific to the redirect step.

## 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-ttfb-redirect-check-f90cf11e/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)