missing_api_keyHTTP 401authNo API key was sent with the request.
- Cause
- The Authorization header was absent, empty, or malformed. The most common version of this is sending the key as a bare string with no `Bearer ` prefix, or letting an empty environment variable interpolate into the header.
- Fix
- Send `Authorization: Bearer YOUR_API_KEY`. Check the variable actually resolved before the request went out — an unset env var produces a header that looks present and carries nothing.