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

Annotations already declare readOnlyHint=false, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds the useful slug-uniqueness constraint, but mentions 'custom HTML fields' that do not exist anywhere in the schema, which is mildly misleading context. It says nothing about whether the created page is published or hidden.

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?

Purpose is front-loaded in the first sentence and the Args block is one line per parameter with no filler. Given 0% schema coverage, the per-parameter lines are load-bearing rather than redundant.

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?

An output schema exists, so return values need not be described, and the parameters are covered. What is missing is operational context for a write tool: required permissions, whether the page is immediately live, and how it relates to the project's publish flow.

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 carries the full burden and largely succeeds: it labels all five parameters and adds a real semantic constraint (slug must be unique in the project) that the schema does not express. The 'custom HTML' phrase, however, implies a parameter that is absent from the schema.

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 (Create) and resource (page) and enumerates the kind of payload it accepts (metadata plus optional SEO fields). It does not, however, distinguish itself from adjacent creation tools like create_cms_post or create_website, so the agent still has to infer that a 'page' is a distinct resource.

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?

There is no statement of when to use this tool versus update_page, list_pages, or the CMS post/website creation siblings. The only conditional content is the slug uniqueness constraint, which is a validation rule rather than usage guidance.

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