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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior. The description adds the context that the artifact is 'cached', which is a useful behavioral trait beyond the annotations. No contradiction or missing major behavioral details.

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 sentence, front-loaded with the action ('Return') and object, with no wasted words. It is appropriately concise for the simple 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?

For a simple read-only cache retrieval tool, the description is complete. It covers the purpose, the caching nature, and the intended audience. Output schema exists, so return values are documented elsewhere, and annotations cover the safety profile.

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 100% for the six optional parameters, each with its own schema description, so the baseline is 3. The tool description does not add any parameter-specific meaning beyond what the schema already provides.

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 returns a cached Ukrainian Toofi example PDF artifact, using 'return' as the verb and specifying the resource. It distinguishes itself from sibling language example tools by explicitly mentioning the 'ua alias', though slight ambiguity with example_uk remains.

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 implies usage for agent integrators who requested the ua alias, but it does not explicitly state when to use this tool versus alternatives like example_uk or get_example_result. No clear exclusions or alternative references are provided.

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