Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations supplied, the description carries the full burden, and it does disclose two meaningful behavioral traits: the next scheduled execution is left untouched, and dry_run defaults to true (a safety-relevant default). It does not say what the execution actually produces (emails, documents, ledger entries), whether the run is idempotent, or whether it requires elevated permissions — significant omissions for an execution-triggering tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.