get_usage

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

No annotations are provided, so the description carries the behavioral burden: it implies a read operation via 'Get' and 'Returns' and discloses conditional return fields such as limits, per-node pricing, error monitoring, and logs integration. It does not state permissions, rate limits, or other operational constraints.

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?

The description is two sentences, front-loaded with the core action and scope. The second sentence efficiently enumerates the key returned categories without unnecessary detail.

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 zero parameters and an output schema present, the description is largely complete: it identifies the billing-period scope and summarizes the returned data. It could do slightly more to clarify usage context or operational safety, but the output schema carries the return-shape burden.

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?

The tool has zero parameters, so there are no parameter semantics to explain. The baseline for zero parameters is 4, and the description does not create confusion about inputs.

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 and resource: retrieving usage and billing data for the current billing period. It clearly covers billing-period dates, pricing style, APM transactions, nodes, errors, and logs, which distinguishes it from the app-telemetry siblings, though it does not explicitly name those 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?

Usage is implied by the phrase 'current billing period' and the billing/usage focus, so an agent can infer this is the account-level billing tool. However, there is no explicit when-to-use guidance, no exclusions, and no comparison to alternatives.

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