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

Annotations declare destructiveHint=true and readOnlyHint=false, so the write nature is already covered; the description adds the important patch semantics that only passed fields change and that null/"" clears a value, which is real behavioral information beyond the annotations. It does not mention permission requirements or whether changes are reversible.

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?

A single dense paragraph that front-loads the action and the patch/clear rule, then lists the field surface. The long UI-label enumeration is slightly verbose but earns its place by mapping screen labels to parameter names.

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 17-parameter mutation tool with no output schema and destructiveHint=true, the description covers the mutating scope, the partial-update contract, and the clearing convention. It omits edge cases (slug collisions, whether settings apply only after export/publish) but is largely sufficient to call the tool correctly.

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 coverage is only 53%, but the description compensates by mapping UI labels to parameters ("Show this page in Google"→indexable, "Ask AI crawlers not to use this page"→aiCrawlers, "image size in search results"→imagePreview, "longest text preview"→textPreviewLength) and by explaining null-clearing. Several parameters (metaTitle, metaDescription, noArchive, noSnippet, noImageIndex) remain undocumented in both places.

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 ("Set one page's Settings") and enumerates the exact field surface being mutated (slug, meta title/description, canonical, language, social image, indexability, crawler directives, custom code). This clearly distinguishes it from the read-side sibling uichemy_get_page_settings.

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?

The description implies usage ("Set one page's Settings") and gives the patch contract, but never names the alternative read tool or states when not to use this mutating call. An agent must infer that get_page_settings is the read counterpart.

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