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

Annotations already establish the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false), so the description is not the primary carrier of behavior. It usefully adds that the comparison covers engine, ruleset, input and conclusion status, but says nothing about output shape, size, or whether versions must be ordered.

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?

A single front-loaded sentence with zero waste, though it is terse to the point of under-specification rather than disciplined brevity.

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 tool taking two required nested objects at 0% schema coverage, the description leaves too much unsaid: no parameter guidance, no usage context, and no note on version ordering. The existing output schema spares it from explaining return values, but that alone does not rescue 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?

Both required parameters are bare nested objects with 0% schema description coverage, and the description never explains what 'first' and 'second' should contain or how the nested fields map to the compared dimensions. With full schema burden on the description and no compensation, this is a clear gap.

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 names a specific verb ('compares') and enumerates the comparison axes (engine, ruleset, input, conclusion status), which pairs with the tool name to make the resource clear. It does not, however, distinguish itself from sibling comparison tools like compare_conventions or compare_traditions.

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 statement of when this tool should be used, what triggers a version comparison, or which alternatives exist. The agent must infer the scenario entirely from the name.

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