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

Annotations already declare readOnlyHint/idempotentHint/openWorldHint=false and non-destructive, so safety is covered by structured data. The description adds only the identifier-flexibility fact (two alternate keys); it is silent on the fact that both parameters are optional, i.e. what the server does when neither key is given.

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 with the resource and the two selector keys; nothing decorative and nothing repeated from 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?

With no output schema and no parameter descriptions, the definition should say what a page record contains and how the two keys interact. It also omits the error behavior when neither selector is provided, which is the most likely misuse for a zero-required-parameter tool.

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 0%, so the description must compensate; it does name both parameters and their types implicitly (id vs uuid) and states either may serve as the selector. That is real value, but precedence, mutual exclusivity, and the all-optional requirement are left unexplained.

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 ("Fetch") plus resource ("a single seliee_page") and the two lookup keys, which clearly separates it from list_pages and from the get_page_faqs / get_page_language variants. It never names a sibling explicitly, so the differentiation is inferable rather than stated.

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 guidance on when to prefer this over list_pages, get_page_faqs, or edit_page, and no prerequisites. "By page_id or page_uuid" hints at lookup mode but does not tell the agent which to choose or what happens if both/neither are supplied.

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