budget_get

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

No annotations are present, so the description carries the full behavioral burden. It implies a read-only operation with "Get" but does not clarify whether values are cached, whether the checkout URL is dynamically generated, what "soft thresholds" mean, or what side effects, if any, occur. Key behavioral context is missing.

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 a single tight sentence that begins with the action and lists the three return categories. It contains no filler, redundancies, or irrelevant details, making it highly concise and easy to parse.

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 zero-parameter tool, the description lists the primary return items, which covers the basics. However, it does not explain the meaning of "soft thresholds" or the circumstances under which the checkout URL is relevant. Given the sibling tools budget_estimate and billing_machine_pay, some contextual linkage would improve completeness.

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 input schema is empty, with zero parameters and 100% schema coverage. There are no parameters to document, so the baseline is 4. The description appropriately focuses on the tool's output rather than non-existent 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 states a clear verb-resource pair: "Get remaining quotas, soft thresholds, and checkout URL for topping up." It identifies the budget resource and enumerates the specific outputs. It does not explicitly distinguish itself from siblings like usage_get or budget_estimate, but the listed outputs make its purpose reasonably identifiable.

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 description gives no indication of when to use this tool versus alternatives such as budget_estimate or billing_machine_pay. It does not mention exclusions, prerequisites, or a preferred decision path. There is no guidance beyond the basic action.

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