Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint/openWorldHint=false/destructiveHint=false, so the safety profile is covered structurally. The description adds that results are excerpted and instructs the agent to include company name and page URL when answering, which is useful output guidance but not deep behavioral disclosure (no ranking, pagination, or scope limits).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.