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

Annotations already declare destructiveHint=true and openWorldHint=true, yet the description adds material context the agent could not otherwise know: the capability requirements and, importantly, that execution is deferred to human approval in Royally so nothing on the site changes immediately. That changes the agent's plan (no immediate effect to verify), which is genuinely valuable beyond the annotations.

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?

Three short clauses, action first, prerequisites second, deferred-execution caveat last. No filler, though the site tagline and the slightly awkward "Through Royally" phrasing add a little noise.

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?

Covers the deferred-approval behavior and permissions, which are the hardest parts to guess. It still omits whether a trashed comment can be restored and by which tool (wp_approve_comment is the likely route but unstated), and says nothing about the response, leaving the reversibility picture incomplete for a destructive operation.

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 coverage is only 50%: site_id is documented with an enum, but comment_id is a bare integer with no description anywhere. The description adds nothing about parameters and does not compensate for the undocumented required comment_id, so it falls below the baseline expected at low coverage.

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?

States a specific verb and resource ("Move a comment to trash") that is distinct from permanent deletion or spam-marking. It does not explicitly distinguish itself from the closely related siblings wp_delete_comment, wp_spam_comment, and wp_approve_comment, so an agent must infer which one is appropriate.

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?

Gives the prerequisite conditions (moderate_comments capability, edit rights on the comment's post) but never states when to prefer trashing over wp_delete_comment (permanent) or wp_spam_comment. Usage is implied by the operation name rather than explicitly guided.

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