Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden. It does state the core behavior ('expand a cited passage with up to three neighboring passages'), giving the upper bound. However, it doesn't disclose whether the operation is read-only, what happens when no neighbors exist, or how the 'context' parameter modifies the behavior. The description is not misleading, but it lacks depth that would be valuable given zero annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.