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

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered; the description adds value beyond them by listing exactly what comes back (published flag, address, all fields) and by framing it as a read-before-write workflow. The admin-only scope of target_user_id is left to the schema rather than restated.

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?

One front-loaded sentence plus a short usage clause; the scope (what the page read returns) comes before the workflow advice. No filler, no restatement of the title.

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 read-only, single-param tool with no output schema, the description usefully enumerates the returned contents and the ordering constraint. Minor gaps remain — it does not say what happens if the account has no landing page yet — but the essentials for correct invocation are present.

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?

There is a single optional parameter with 100% schema description coverage, and the schema already explains that target_user_id is admin-only. The description adds nothing about the parameter, so baseline 3 applies.

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?

The description states a specific verb (read) and resource (the account's landing page) and enumerates the payload: publication status, the subdomain.noeixo.tech address, and all current fields. It does not explicitly name the write-side sibling publish_landing_page, so an agent must infer the read/write split from the verb alone.

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?

"Use ANTES de alterar a pagina, para mudar so o que o aluno pediu" gives an explicit precondition: read first so only the requested change is made. That is a real usage rule, though it never names the alternative tool (publish_landing_page) or the update path by name.

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