## TL;DR

Do not send the key as a Bearer [redacted] or a query parameter; those fail. Authenticate to api.zyte.com with HTTP Basic auth, key as username, blank password.

## Fix

1. Do not send the key as a Bearer [redacted] or a query parameter; those fail.
   Expected: You get the expected result; the problem is gone.

## When to use

- You are dealing with this situation.
- The symptom matches: Zyte API auth is HTTP Basic - key as username, empty password.

## When NOT to use

- Unrelated issues with a different cause.
- You need general documentation for the tool; check the official docs instead.

## Compatibility

Reported per the linked source.

## Variant phrasings

### Zyte API auth is HTTP Basic - key as username, empty password

## Why it happens

Zyte field notes (scraping-vendors.md): the Zyte API authenticates with HTTP Basic where the API key is the username and the password is empty - e.g. curl --user YOUR_ZYTE_API_KEY - against POST https://api.zyte.com/v1/extract.

## Edge cases

- If your error message differs even slightly, this is probably a different issue; search the exact text.
- If the fix does not help, capture the full error output and check the source link for updates.