Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses the output to a Google Sheet and multiprocess redirect, but does not address permissions, error conditions, or whether the sheet is created or overwritten. The description implies a read operation but writing to a sheet is a side effect.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.