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

No annotations are provided, so the description carries the full behavioral burden. It does not explain the return shape, whether the operation is read-only beyond the obvious 'Get' verb, error behavior for unknown categories, or what 'Missing facts must remain unknown' means operationally.

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?

The first sentence is efficient and front-loaded. The second sentence, 'Missing facts must remain unknown,' is cryptic and does not clearly earn its place because it does not explain how the tool behaves or how to handle missing data.

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?

This is a read-style schema lookup with no annotations and no output schema. The description should compensate by explaining the category parameter semantics and return behavior, but it does neither. It is therefore incomplete for an agent that needs to call it 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?

There is one required 'category' parameter with 0% schema description coverage. The description does not clarify whether the value should be a category ID, name, slug, or path, nor does it give examples or constraints. It adds almost no meaning beyond the parameter name.

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?

The description clearly states a specific verb and resource: get category-specific fields. It also implies the purpose is pre-publish or pre-filter validation. It does not explicitly distinguish itself from list_categories, but the field-schema framing is meaningfully different from listing categories.

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 phrase 'before publishing or filtering' gives a concrete usage context, which is useful. However, it does not name alternatives or exclusions, such as when to use list_categories instead, and the second sentence does not clarify when-not-to-use behavior.

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