get_total_distance_and_efficiency

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

Without annotations, the description carries the burden of disclosing behavioral traits. The verb 'Get' implies a safe read-only operation, but it does not explicitly state this or mention any other side effects, data freshness, or limitations. This is minimal transparency.

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, focused sentence that directly states the tool's purpose. It contains no unnecessary words or repetition, making it highly efficient for a zero-parameter tool.

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?

Given that the tool has no parameters and an output schema exists, the description sufficiently explains what the tool returns (total distance and efficiency per car). The lack of context about units or use cases is a minor gap, but the core is covered.

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?

With 0 parameters, the baseline per the rubric is 4. The description correctly implies that no input is needed, as it refers to 'each car' without requiring filtering inputs. No further parameter semantics are necessary.

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 clearly states the tool's function: 'Get the total distance and efficiency for each car.' It uses a specific verb ('get') and resource ('total distance and efficiency for each car'), which distinguishes it from sibling tools that focus on other metrics like temperature or location.

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 provides no guidance on when to use this tool versus alternatives. It does not mention any distinguishing use case, prerequisites, or mention of when not to use it. Sibling tools cover similar analytics, but no comparison or context is given.

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