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

With no annotations, the description carries the full load and does well: it discloses that the site is temporary, that no account is required, and critically that the returned token is shown only once and must be saved. Missing are the site's lifetime before expiry and whether creation is rate-limited or quota-bound, which matter for a "temporary" resource.

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 no filler; the core capability and the security caveat about the one-time token are both front-loaded where an agent will see them.

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?

Because there is no output schema, the description's enumeration of return values (site name, token, visitor login, admin login, claim link) is genuinely load-bearing and it delivers it. The remaining gap is the unspecified lifetime of a "temporary" site, which an agent would need before advising a user.

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 explains ref, name, title, and site_password in detail. The description adds only an indirect nod to the password ("password-protected") and does not elaborate on any parameter beyond that. Baseline 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?

States a specific verb and resource ("Create a new ... WordPress site") plus two distinguishing qualifiers: temporary and password-protected. It is unmistakable against siblings like get_site, list_sites, and delete_site.

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?

"No account needed" gives useful context about prerequisites, but the description never states when to choose this over alternatives or what happens afterward (e.g. that delete_site or get_site would be the follow-up tools). Usage is implied by the unambiguous create verb rather than stated.

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