Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must fully disclose behavior. It states the tool creates a URL and the user completes payment, but does not explain side effects (e.g., whether a checkout session is created), required permissions, error handling, or idempotency. For a creation tool, more transparency is needed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.