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

With no annotations, the description must carry behavioral disclosure. It does reveal useful behavior: rows are matched by 'any of' the values and appear 'in the order given.' However, it does not explain the output format, whether matching is exact, or how 'side by side' comparison is presented.

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 dense sentence with no wasted words, and the core matching logic is front-loaded. It is slightly awkward grammatically ('whose column is any...'), but the structure is efficient and readable.

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 two-parameter tool, the description provides adequate invocation guidance, but important context is missing: no output schema, no mention of what a comparison result looks like, and no differentiation from closely related sibling tools. The title's 'side by side' behavior is not carried into the description.

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 0%, so the description must explain the parameters. It does: 'column' is the field to match, and 'values' are the candidate values. It adds the OR semantics ('any of') and the ordering behavior, going meaningfully beyond the raw 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 identifies the resource (Eposvo dataset) and the action: retrieve rows whose column matches any of the given values, in a specified order. The 'X vs Y' phrasing helps differentiate it from sibling dataset tools, though it relies on the title for the explicit 'compare' verb.

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 a clear usage context ('for X vs Y questions') but does not explicitly mention when not to use the tool or how it compares to siblings like dataset_row or dataset_search. The guidance is present but underdeveloped.

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