Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It states the operation ('export database') but does not disclose any side effects, return format, output location, or prerequisites. The behavior is only minimally described, leaving the agent uncertain about what happens after invocation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.