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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds the key behavioral context that the endpoint is 'credential-free' (no authentication needed) and that the output is 'normalized static page detail', which helps the agent understand the shape and reliability of the response. It doesn't cover rate limits, caching, or error behavior, but for a simple read-only endpoint this is reasonable additional context beyond the annotations.

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?

Single, well-structured sentence that front-loads the core action ('Returns normalized static page detail') and then specifies the data source. Zero waste, no repetition, and every word earns its place.

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-parameter read-only tool with an output schema (which handles return value documentation) and annotations covering safety, the description provides sufficient context: what it returns, from where, and that no credentials are needed. It could mention what 'normalized' entails or any limitations, but it's complete enough for an agent to call correctly without reading the schema.

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%, so the schema already fully documents the single 'handle' parameter as a URL slug. The description adds no additional syntax or format details beyond what the schema provides. Baseline 3 is appropriate when the schema does the heavy lifting and the description doesn't compensate further.

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 ('Returns') and resource ('normalized static page detail') and names the exact data source ('credential-free /pages/{handle}.json endpoint'). This clearly distinguishes it from siblings like rothys_pages (which presumably lists pages) and rothys_product. No explicit sibling differentiation in the description, but the resource specificity is high.

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 by naming the endpoint and the required handle, but it doesn't state when to use this tool versus rothys_pages or other siblings. No when-not-to-use or alternative guidance is provided. The mention of 'static page detail' vs the likely list-oriented sibling gives some implicit context, but not enough to reach 4.

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