Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It states the tool uploads a file to S3, implying a write operation, but lacks details on permissions required, whether it overwrites existing files, error handling, rate limits, or authentication needs (though the input schema hints at credentials). This leaves behavioral traits largely undisclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.