Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and openWorldHint. The description adds that the search is by exact or partial name and accepts optional city filtering, plus a mention of the PRH Trade Register source. It doesn't disclose any limitations, but for a simple search, this is sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.