Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It mentions normalization but doesn't disclose what transformations occur (e.g., padding, prefix changes), whether it's idempotent, error handling for invalid codes, or performance characteristics. This leaves significant behavioral gaps for a tool that modifies data.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.