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

Annotations already establish readOnly, idempotent and non-destructive behavior, so the safety profile is covered. The description adds useful semantic context about what the 'developers' and 'modules' topics actually contain, plus the default scope. It doesn't describe output shape, though that is partly mitigated by the presence of an output schema.

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?

Three short sentences with the core purpose front-loaded and the parameter clarification trailing. Efficient overall, though the phrase 'the live parts' for 'modules' is vague enough to be worth sharpening.

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 single optional enum parameter with an output schema, the description covers purpose, timing and parameter meaning adequately. The topic list in prose ('design brief, functional blocks and SEO') does not fully enumerate the enum (editing, all), leaving a small gap.

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%, and the enum values carry the parameter. The description goes beyond the schema by explaining the meaning of two opaque enum members ('developers' = file uploads, builds, redirects and API connections; 'modules' = the live parts), which is real added value for the remaining undocumented values such as 'editing'.

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 ('Returns Ginta's building guide') and enumerates the content it covers (how sites work, design brief, functional blocks, SEO). This is clearly distinguishable from every sibling, which operate on sites, messages, stats or domains rather than documentation.

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 before building or editing a site' gives a clear triggering condition. It stops short of naming an alternative or stating when not to call it, but the context of use is unambiguous.

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