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

Annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the safety profile is covered. The description adds genuinely new context beyond annotations: what actually stops (checks), what is suppressed (alerts), and what is preserved (settings and history) — clarifying that 'destructive' here does not mean data loss.

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?

Two short sentences, front-loaded with the action and effect, no filler. Every clause carries information an agent needs.

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 one-parameter state-change tool with annotations and no output schema, the description covers effect, alert suppression, and state persistence — enough to call it correctly. The remaining gap is failing to contrast pause with mute/resume in a sibling list that contains both.

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?

There is a single required parameter with 100% schema description coverage ('Monitor id.'). The description adds no format, source, or lookup guidance for the id, so with the schema doing all the work this is the baseline 3.

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?

States a specific verb and resource ('Pause a monitor') and immediately defines the observable effect: checking stops and alerts are suppressed until resumed. It does not explicitly distinguish this from the closely named siblings vs_monitors_mute or vs_monitors_resume, so an agent must infer the difference.

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?

The phrase 'until it is resumed' implicitly points at the resume path, but there is no explicit when-to-use/when-not guidance and no mention of mute as the alternative for suppressing alerts while keeping checks running. Usage is implied rather than stated.

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