Upload a PDF file to a knowledge base. Only PDF files are accepted (validated by MIME type and extension).

400 is returned for billing/entitlement failures before the file is processed:

• "Insufficient credits for KB storage upload." — account lacks upload credits
• "KB storage access is not enabled for your account." — plan doesn't include KB storage

No application-level file size limit is enforced — any proxy or infrastructure limits (e.g. nginx) apply instead.

{
  "status": true
}