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

With annotations already declaring readOnly, idempotent, non-destructive and closed-world, the description's added value is secondary but real: no arguments, no Site Health test execution, no outbound request, and a permission gate. These are the kind of operational details annotations do not carry. It still says nothing about output shape or formatting of the values (e.g. booleans vs strings), so it stays at a solid 3 rather than higher.

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?

Front-loaded with the outcome, then scope limits, then sibling hand-offs. Dense and largely waste-free, though the closing transport note about AlphaBridge Connect reads as boilerplate relative to the routing information that precedes it.

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?

No output schema exists, and the description compensates by enumerating the reported fields, the permission requirement, and the negative behaviors an agent might wrongly assume. Nothing needed to invoke or interpret this call correctly is missing.

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?

Zero parameters, so the baseline is 4; the schema is empty and the description correctly confirms it 'takes no arguments', which is consistent and mildly reinforcing. There is nothing more to add for a parameterless tool.

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?

Specific verb ('Get a short health summary') plus an explicit enumeration of the exact fields returned (PHP version and the 7.4 threshold, WP version, HTTPS, WP_DEBUG, WP_MEMORY_LIMIT, object cache, multisite, DISALLOW_FILE_MODS, pending update counts). It also distances itself from two named siblings, so an agent can distinguish it without opening any schema.

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?

States the routing condition by naming the alternatives and what each covers instead: wp_get_update_status for named pending updates, wp_site_info for versions/themes/plugins. It also sets expectations by saying it does NOT run wp-admin Site Health tests and makes no remote request, and adds the manage_options prerequisite.

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