Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is clear. The description adds that the data is 'live' and specific to Bitstamp, but doesn't disclose behavior like rate limits, error handling, or what happens with invalid pairs. It provides some context beyond annotations but not rich detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.