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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds scope context (which tools are included, that each comes with its usage guide) but does not discuss return shape, pagination, or whether results are filtered by client — and with an output schema present, that omission is less costly.

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 sentences, front-loaded with what is listed and followed by the usage scenario; the parenthetical product enumeration earns its place by defining scope. Slightly heavy on the example list, but there is no filler.

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 zero-parameter read-only list tool with rich annotations and an output schema, the description supplies everything the agent needs: what is returned, what it contains, and when to reach for it. Only the relationship to get_tool_guide is left implicit.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; baseline 4 applies. No parameter-level guidance is needed or missing.

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 verb+resource (listing available tools/products with their usage guides) and enumerates the covered product names (cPanel, Sitejet, JetBackup, Softaculous, WP Toolkit, Plesk), which pins down scope precisely. It doesn't explicitly differentiate itself from the sibling get_tool_guide (singular), so the list-vs-single distinction is left to inference.

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?

"Úsala para saber qué tiene un cliente a su alcance antes de explicarle cómo hacer algo" gives a concrete usage scenario — inventorying a client's available tools before explaining steps. No exclusions or alternative tools (e.g., get_tool_guide for one specific guide) are named, so it stops short of full routing guidance.

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