Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description thoroughly discloses behavior beyond annotations: it clones source text as the initial draft, returns the draft for immediate editing, requires keeping codes identical, and enforces one translation per language and language differing from primary. This gives the agent a clear mental model of what will happen.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.