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

Annotations already state readOnlyHint=false, destructiveHint=false, and idempotentHint=false. The description adds some behavioral context beyond that: membership gating, vague pacing ('at a member's lounge pace'), and moderation ('the house's checks read it as they read anything said'), but these are too cryptic to be fully actionable.

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 purpose is front-loaded in a single sentence, but the sentence includes vague poetic phrasing ('at a member's lounge pace') that repeats wording already present in the schema. It is not bloated, but parts do not earn their place.

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 comment-creation tool with fully documented parameters and annotations, the description covers the core action, audience, and hints at moderation and pacing. However, it lacks clear sibling routing and concrete behavioral detail such as what moderation means for the caller.

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 all four parameters are documented in the schema. The description only echoes 'by its id' and does not add syntax, format, or semantic 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 states a specific verb and resource: comment on art or a shared link, or reply to a comment by its id. It is clear what the tool does but does not distinguish itself from siblings such as say, whisper, tell, or guestbook.

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 only usage guidance is the membership restriction ('For members') and the implied task of commenting or replying. It never says when to choose this over say, whisper, tell, or guestbook, and offers no when-not-to-use guidance.

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