Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations only indicate the tool is neither read-only nor destructive. The description adds behavioral context by specifying a locked-down Docker sandbox and the need for an explicitly configured secure deployment hook. However, it omits permission requirements, side effects, cost, or failure behavior, which are relevant for a tool that runs user code.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.