Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full responsibility for disclosing behavioral traits. It only states 'Get a single commit', which implies a read operation, but fails to mention authentication needs, rate limits, or whether the commit includes full details (author, message, etc.). This is insufficient for safe invocation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.