Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true and openWorldHint=true, so 'read-only' is largely a restatement. The 'runs straight away' note does add something beyond the annotations — no confirmation step — but nothing is said about result size, whether 'top IPs' is truncated, or how the period affects scope.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

One front-loaded sentence with the core capability first, followed by a short behavioral note. The 'Through Royally:' fragment is slightly awkward and adds little, but the whole thing is tight and readable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a zero-required-parameter read-only stats getter with a fully documented schema and complete safety annotations, nothing essential is missing. An agent knows what it returns, that it is safe and immediate, and what the two optional parameters mean.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% and both parameters are enums with per-value descriptions, so the schema carries full semantics. The description contributes nothing about the period default (both params are optional) or which site the fixed site_id implies; baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

Specific verb+resource: 'Get failed login attempt statistics and top offending IPs', which tells an agent exactly what data comes back. It does not, however, distinguish itself from close siblings like gp_get_security_stats, gp_get_security_status, or fleet__audit_admin_users, so an agent comparing those must infer the boundary.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No when-to-use guidance, no prerequisites, and no named alternatives among the many security-related siblings. The phrase 'runs straight away' describes execution behavior, not selection criteria, so the agent gets no help choosing this over gp_get_security_stats.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.