compare_templates

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and closed-world, so the safety profile is fully covered. The description adds only the set of dimensions being compared, which hints at the return content since no output schema exists, but says nothing about ordering, output shape, or error behavior for invalid ids.

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 a specific verb and scope, no padding or boilerplate. It is close to optimally sized, though the trailing comparison-dimension list is compressed to the point of being slightly ambiguous about output format.

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 read-only, single-parameter tool the description is minimally adequate, and annotations cover the safety profile. However with no output schema the agent gets no sense of what a comparison result looks like, and there is no routing guidance against the near-identical compare_design_assets sibling.

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 description coverage is 0% with one parameter, so the description carries the documentation burden. It does restate the 2–5 cardinality, but that is already encoded in minItems/maxItems, and it gives no explanation of the id format or what happens if an id is unknown, so it adds little 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?

States a specific verb (compare) and resource (templates), plus the comparison axes (engine, source media, style, formats) and the 2–5 cardinality, so an agent knows exactly what operation it performs. It does not differentiate itself from the similarly named sibling compare_design_assets, which is the only real gap.

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 when-to-use guidance, no mention of alternatives such as compare_design_assets or get_template, and no conditions or prerequisites. The agent must infer entirely from the name that this is the right tool for a multi-template comparison.

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