Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the behavioral burden. It clearly identifies this as a read-only 'Get' operation and specifies the output dimensions (ticks, bars, seconds). It does not detail edge cases, but for a simple getter this is sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.