Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the full burden of disclosing behavior. It only states that it updates an existing workflow, implying mutation but not disclosing whether updates are additive or destructive, whether validation occurs, what happens to existing workflow properties, or if authentication is required. This is a significant gap for a tool that modifies state.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.