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

Annotations already declare readOnlyHint=true, openWorldHint=false, and destructiveHint=false, so the safety profile is covered. The description adds useful output context by saying the idea includes votes and comments, which matters because there is no output schema. It says nothing about permissions, pagination, or error behavior, so with annotations a 3 is appropriate.

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 short sentence fragment with no wasted words, which is appropriately brief for a simple read tool. It is concise but lacks a clear verb and front-loaded action, so it is not fully structured.

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 one-parameter read tool with full schema coverage and safety annotations, the definition is minimally adequate. It usefully discloses that votes and comments are included, but it does not explain the retrieval context or how it relates to list_feature_requests and the comment/vote siblings.

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%, and the single ideaId parameter is documented as 'Id from list_feature_requests.' The description adds no additional parameter meaning or format detail, so the baseline 3 applies.

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 is a noun phrase rather than a verb: 'One idea for the app with votes and comments.' It identifies a single feature request and says the response includes votes and comments, and 'one idea' distinguishes it from list_feature_requests. However, the description itself does not state the retrieval action; the title 'See an idea' supplies that 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?

There is no when-to-use or when-not-to-use guidance in the description. The only routing hint is in the parameter schema ('Id from list_feature_requests'), not the description, and the siblings list_feature_requests, comment_feature_request, and vote_feature_request are not mentioned.

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