Get Monthly Bandwidth Usage

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, so the safety profile is covered. The description adds useful context about 'billable' and monthly scoping, but it does not disclose output shape, units, timezone handling, or pagination, which would add behavioral value.

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 conveys the verb, resource, time period, metric type, and scope. There is no filler or redundant restatement of the title.

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 read-only analytics tool, the description plus schema is mostly sufficient. The main gap is the absence of return-value details, but the operation is simple enough that 'usage' adequately implies what the caller receives.

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%: site_id is documented as 'The site ID'. The description adds essentially no parameter-level meaning beyond confirming the tool operates 'for a site', so the 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?

The description uses a specific verb ('Get') and identifies the exact resource: this month's billable bandwidth usage for a site. It is clear about scope, though it does not explicitly distinguish itself from sibling tools like kinsta_analytics_bandwidth or kinsta_analytics_cdn-bandwidth-usage.

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 'this month's billable bandwidth usage' implies a specific billing/usage context, giving some situational guidance. However, there is no explicit statement of when to prefer this tool over the closely related analytics siblings, nor any exclusion criteria.

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