Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral burden. It usefully discloses that the embedding is reconstructed automatically and that the memory is returned to the HOT tier. However, it does not clarify whether the source memory is moved, copied, or deleted from memoria_historica, which is a significant side-effect gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.