get_bill

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

No annotations are provided, and the description carries the full burden of behavioral disclosure. It only says 'Get a bill by ID' and does not mention return format, not-found behavior, permissions, or side effects, though the operation appears read-only.

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 five-word sentence with no filler or redundant content. It is front-loaded, immediately understandable, and appropriately sized for a one-parameter lookup operation.

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 simple by-ID getter, the description is minimally sufficient to invoke the tool. However, with no annotations, no output schema, and no mention of error behavior or response shape, an agent still lacks some context about what to expect after the call.

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 schema has one required integer 'id' with zero description coverage. The phrase 'by ID' minimally compensates by indicating the parameter is the bill identifier, but it adds little beyond the schema's property name and provides no guidance on where the ID comes from or how to find it.

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 specific action ('Get') and resource ('a bill') and identifies the retrieval method ('by ID'). It is clearly distinguished from list_bills and update_bills, though it does not explicitly differentiate from the sibling open_bill.

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?

There is no guidance on when to use this tool versus alternatives. The description does not mention list_bills for browsing or open_bill for a different action, so an agent must infer usage entirely from the tool name.

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