Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint true, and destructiveHint false. The description adds the 'market discovery and browsing' framing but doesn't disclose pagination semantics, how 'latest' is defined (block height, timestamp), or any rate limit. It adds some context but not rich behavioral detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.