Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits, but it only says 'find text occurrences'. It does not clarify return type (e.g., list of locations, count, boolean), effect on document, or performance implications. The input schema hints at search options, but description adds no behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.