Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden of behavioral disclosure. 'Berechnet' indicates a calculation, implying a read-only, side-effect-free operation. However, it does not disclose the output format, the use of physical constants, or clarify what 'optional Drahtlängen' actually means in terms of computation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.