Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It names the diagnostic areas and 'Diagnostik' implies a read-only check, but it does not describe the output, side effects, credential sensitivity, or failure behavior. This is thin for a tool with no annotations and no output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.