Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The readOnlyHint annotation already signals a safe read operation, lowering the bar for additional disclosure. The description adds the useful scoping detail that searches span all indexed projects, but it does not mention search behavior like case sensitivity, result limitations, or whether indexing is required. This is acceptable 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.