Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but offers minimal behavioral context. '(Compatibility tool)' hints at backward compatibility usage but fails to explain what gets modified (project settings? scene nodes?), the purpose of 'additionalProperties: true', or what successful invocation returns.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.