Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already provide comprehensive behavioral hints (readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: true), so the bar is lower. The description adds minimal value by indicating this is a GET operation, which aligns with the annotations. However, it doesn't provide any additional behavioral context beyond what the annotations already declare, such as authentication requirements, rate limits, or what specific OpenAPI document is retrieved.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.