Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses that the tool forces a rebuild (a potentially expensive operation) and reports error status, which is useful. However, it doesn't disclose side effects (e.g., whether the rebuild can fail mid-way, whether it blocks until complete, or whether it affects unsaved changes). It's adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.