Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. "Read" plus the enumeration of returned state makes clear this is a non-mutating inspection and tells the agent what data it receives, which is genuinely useful. However, it says nothing about behavior when the table is missing, whether the snapshot is live or cached, or any access requirements for a table the agent may not be seated at.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.