Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but discloses minimal behavioral traits. 'Set' implies a mutation operation, but it doesn't specify whether this overwrites existing conditions, requires specific permissions, has side effects on graph execution, or what happens if the edge doesn't exist. No rate limits, error conditions, or response format are described.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.