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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the safety profile is covered by structured data. The description adds the state precondition (target must be paused), which the annotations don't convey, but it doesn't say whether activation is reversible, what side effects it triggers (e.g., resuming notifications), or how it behaves on an already-active alert.

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 short, front-loaded sentence with no filler or redundancy. It is efficient, though the brevity borders on under-specification rather than disciplined concision.

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 state-mutating tool with no output schema and zero parameter documentation, the description does the bare minimum. An agent still cannot tell what activation actually changes, what is returned, how failures (alert not paused, unknown ID) are surfaced, or whether the effect is reversible.

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 0% for the single required parameter alert_id, so the description is the only place meaning could be added — and it says nothing about the ID's format, where to obtain it, or whether it comes from get_alerts. The parameter name is largely self-explanatory, which keeps this from being a 1, but the low coverage is not compensated for.

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?

"Activate a paused alert" states a specific verb (activate) applied to a specific resource (alert), and the word "paused" implicitly contrasts with the sibling deactivate_alert. It is clear what the tool does, though it never names the opposite tool or otherwise explicitly differentiates itself from the alert siblings.

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?

"Paused" implies a precondition — the alert must already be in a paused state for this to be the right call — which is useful implied guidance. There is no explicit when-to-use/when-not-to-use statement and no pointer to deactivate_alert, create_alert, or delete_alert as alternatives for other state transitions.

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