Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. 'Switch' implies a mutation action, but it doesn't specify effects (e.g., changes audio output, may require active device), permissions, or error conditions. It lacks details on what 'next' means (e.g., wraps around a list) or response behavior, leaving significant gaps for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.