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

No annotations are provided, so the description carries the full burden. It states that the tool 'returns' a list, which implies a read-only operation, but it does not explicitly disclose that it has no side effects or describe error behavior for invalid/unsupported versions. This is a modest disclosure but not comprehensive.

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 one sentence, front-loaded with the core action, and every phrase adds value. It lists exactly what data is returned without any redundant fluff or repetition of the tool name.

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 low complexity (one parameter, no output schema), the description adequately explains the return value by enumerating the included data types (component names, React component names, Java class names, npm packages). It could be slightly more explicit about potential filters or ordering, but overall it is complete for a simple list-returning tool.

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?

The schema already provides 100% coverage of the single 'version' parameter with a clear description and example (e.g., '24.8'). The tool description merely says 'specific Vaadin version' which adds no meaning beyond the schema, so the baseline of 3 is appropriate.

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 uses the specific verb 'Returns' with the resource 'components available in a specific Vaadin version' and enumerates the exact contents (component names, React names, Java classes, npm packages). This clearly distinguishes it from sibling tools that focus on individual component APIs rather than listing all components.

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 use when one needs an inventory of components for a given Vaadin version, but it does not explicitly mention when not to use it or name alternatives like get_component_java_api or search_vaadin_docs. There is no 'when/when-not' guidance, so it is only minimally adequate.

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