Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the full burden. It clearly states the tool reads a full chapter, implying a read-only, non-destructive action, and specifies the addressing method. However, it does not describe the output format, potential for large responses, or error behavior for invalid slugs/numbers. This is minimal but adequate for a simple read tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.