Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full behavioral burden. It does disclose a non-obvious availability constraint (roles=candidate, candidate_platforms=zhipin, recruiter_platforms=-), which is genuine added context. However, for a deletion operation it says nothing about irreversibility, whether confirmation is required, or what happens when the named preset does not exist.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.