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

Annotations indicate readOnlyHint=true, which is consistent with the description implying a read operation. However, beyond that, the description discloses only filtering capabilities but lacks details on pagination behavior, data source, or any side effects. Given the annotation coverage, the description adds some but not rich behavioral context.

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 concise sentence that captures the essential purpose with no wasted words. It is efficiently front-loaded and focused.

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 the presence of 5 parameters including pagination (limit, cursor) and an output schema, the description is minimal. It does not explain how pagination works, what constitutes a 'sourced' benchmark row, or provide enough detail for an agent to correctly compose queries without additional context.

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 coverage is 100% but parameter descriptions are minimal (e.g., 'limit', 'cursor'). The description adds value by specifying that the tool can filter by model, provider, or benchmark ID, but doesn't explain the role of limit and cursor or provide any additional semantics beyond the schema.

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 finds benchmark rows using a specific verb 'Find' and resource 'benchmark rows'. It mentions filtering by model, provider, or benchmark ID, which distinguishes it from sibling tools like 'compare_models' or 'search_models' that have different purposes.

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. There is no mention of when not to use it, prerequisites, or comparison with sibling tools like 'search_models' or 'latest_changes'.

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