KCP API is accessible via /api/* URL paths on KCP.
One example when it can be useful is checking status of KublrAgent entities in KCP. At the moment there is no UI that shows KublrAgent entity status, so if anything goes wrong with accessing KublrAgent repository, the only way to see it is via API.
1. login to KCP (or Kublr Box) UI
2. in the same browser windows replace KCP URL path with /api/kublragent
Displayed JSON will contain status and diagnostic information of KublrAgent entities.