Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It states that tags are added and that tags can be used for filtering, but does not disclose critical traits such as whether tags are appended or replace existing tags, idempotency, permissions, or error behavior. This is insufficient transparency for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.