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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds essentially nothing beyond that: no note on pagination behavior, result caps, ordering, or retention limits. For a read tool with annotations this is thin but not contradictory.

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?

A single front-loaded sentence with a clear verb-resource clause and a compact list of filters; nothing is wasted and nothing is buried.

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?

With five optional parameters and no output schema, the description covers the input surface adequately but says nothing about what a record looks like or how results are ordered/limited, which is a real gap for a query tool whose shape the agent must reason about.

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%, so every parameter (kind, hours, limit, address, severity) is already documented in the schema, including enum values and min/max. The description only restates the filter categories, adding no syntax or format detail beyond the schema.

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?

The description states a specific verb and resource ('Query historical alert records') and enumerates the filter dimensions (address, rule kind, severity, time range), which maps cleanly onto the schema. It could have differentiated itself more explicitly from the sibling alert_stats (records vs. aggregates), but an agent can still infer the split.

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?

Usage is implied by 'historical alert records' but there is no explicit when-to-use guidance, no mention of when to prefer alert_stats instead, and no stated prerequisites. An agent can guess the intent but is given no routing rule.

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