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

Annotations already declare readOnly, idempotent, openWorld, non-destructive, so safety is covered. Beyond that, the description adds only which fields per prefix, but says nothing about failure modes for unknown ids, size limits, language behavior defaults, or what 'selected brand analysis language' depends on. With annotations carrying the safety profile, this still leaves gaps.

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 dense sentence, front-loaded with the verb and object, with the prefix breakdown in parentheses. Efficient, though the parenthetical is quite long and slightly obscures the core action.

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 read tool with no output schema, the description must explain returns. It does describe the returned fields per prefix type reasonably well, but with 0% schema coverage and 2 params, brandId is unexplained and there is no guidance on errors, pagination, or language fallback. Minimum viable.

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 0%, so the description must compensate, and it only partially does. It explains the id prefix format (content:/catalog:/creator:), which is useful, but leaves brandId undefined and says nothing about how brandId interacts with the id prefix or the selected brand analysis language.

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) and resource (full text of a search result by id), and explains what each id prefix (content:, catalog:, creator:) yields. It is clear, though its relationship to many siblings like get_content, get_video, and get_creator is not directly distinguished.

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 explicit when-to-use guidance or alternatives are named. The prefix semantics imply usage (fetch after search), but the description never states it pairs with search or when to prefer it over get_content/get_creator.

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