Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of behavioral disclosure. It does convey the core output (a fixed ordering for side-view composition), which is useful behavioral information. However, it does not state that the tool is read-only, mention side effects, or clarify whether the order depends on current state. Since the description communicates the primary behavior but lacks explicit safety or state details, a 3 is appropriate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.