Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the full behavioral disclosure burden. It states the return type (a summary of branches, changes, workspaces) but does not disclose side effects (presumably read-only), permission requirements, potential errors (e.g., invalid project_id), or any performance or rate-limit considerations. This is minimal coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.