Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It does explain the mechanism (helper service stops pushing mocked fixes and apps fall back to real GPS/network provider), which is useful context. However, it doesn't mention edge cases like what happens if no mock is active, whether the real location provider was disabled concurrently, or idempotency behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.