Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It only states the action and resource, but does not disclose what 'blockchain information' includes, how network affects output, or any side effects. It is safe to assume read-only, but no explicit detail is given.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.