Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states it's a creation operation. It doesn't disclose behavioral aspects like required permissions, whether it's idempotent, error handling for partial failures, rate limits, or what the response contains. 'Create' implies mutation, but no safety or operational context is given.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.