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

Annotations already declare destructiveHint=true, openWorldHint=true, and readOnlyHint=false, so the safety profile is partly covered. The description still adds meaningful value beyond them: that the effect lands on the user's live site and that 'delete' is permanent, plus the confirm gate. It doesn't say whether trash/spam are reversible or what the response contains, keeping it below a 5.

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?

Two tight sentences, with the highest-stakes information (this is a live-site write) front-loaded and the confirm prerequisite immediately after. Every clause carries distinct information with no repetition.

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?

With no output schema, an agent might want to know the return shape, and reversibility of trash/spam is unstated. However, for a three-parameter moderation action with full schema coverage and rich annotations, the description covers the essential decision inputs: what it does, that it is destructive, that it hits a live site, and that confirmation is mandatory.

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%, so the schema already documents id, action, and confirm, including the note to confirm with the user first. The description only restates the confirm requirement and adds no new syntax or format detail, 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?

Names a specific resource (comment) and enumerates the exact state transitions it performs (approve, unapprove, spam, trash, permanently delete), which maps one-to-one to the action enum. It is clearly distinguishable from the sibling wordpress_list_comments, which is a read operation.

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 leading '[WRITE — changes your live site]' banner and the 'Requires confirm:true' clause make the preconditions for calling it clear. It stops short of naming alternatives or exclusions (e.g., when to trash versus permanently delete, or why not wordpress_delete_post), so it is strong context without full routing guidance.

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