Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds a specific behavioral constraint: the path must be provided without a '.px' suffix, which is not evident from the schema. It also identifies the body format as a PxWeb query object. These details go beyond the annotations and help avoid common usage errors.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.