Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description must communicate behavioral traits. It only states 'Read', which implies a safe read operation, but does not mention return format, error conditions, or whether the file must already exist. This is minimal disclosure for a tool with no annotation support.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.