List Categories

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

No annotations are provided, so the description carries the full transparency burden. It only says 'List indexed categories and subcategories, without file names,' and does not disclose whether this is read-only, how results are ordered, whether pagination exists, or any other behavioral constraints.

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 description is a single sentence with no wasted words: 'indexed' scopes the operation, 'categories and subcategories' names the resource, and 'without file names' adds disambiguation from file-oriented siblings.

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 parameterless listing tool with an output schema, this description is largely complete: it says what the tool returns and what it omits. The only gap is the lack of explicit sibling-tool routing, but that is a usage-guideline issue rather than a core completeness issue.

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?

The tool has zero parameters and an empty input schema, so there are no parameter semantics for the description to explain. The baseline of 4 applies because no parameter documentation is needed.

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 uses a specific verb ('List'), names the resource ('indexed categories and subcategories'), and explicitly excludes file names. This clearly distinguishes it from the sibling list_doc tool, which likely lists documents.

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 'without file names' implies this is for category-level browsing rather than file retrieval, but it does not explicitly mention alternatives or state when to prefer this tool over list_doc, read_doc, or search_doc. Usage context is implied, not fully spelled out.

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