katto_get_brand_kit

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

The annotations already declare read-only, idempotent, and non-destructive behavior, and the description merely repeats 'Read-only' without adding extra context such as authentication needs or rate limits. It does not contradict the annotations, but it also does not enrich behavioral understanding beyond what is already provided.

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, terse sentence that conveys all necessary information without redundancy or filler. It is well-structured for quick comprehension and does not waste words.

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?

Despite the absence of an output schema, the description adequately specifies what will be returned (the brand kits and their key attributes). It lacks details on error handling or response format, but for a simple read-only getter, the provided context is sufficient for most use cases.

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?

Since the tool accepts no parameters, the baseline score of 4 applies. There are no parameter descriptions needed, and the score reflects that the lack of parameters is fully appropriate for this simple read operation.

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 that this tool retrieves saved brand kits and enumerates their contents (colors, caption font, position, default layout, watermark URL). The resource type is explicit and unambiguous, making the tool's purpose immediately understandable.

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 provides no guidance on when to use this tool over similar getter tools (e.g., get_account, get_webhook_secret). It relies entirely on the resource name to imply its use case, with no explicit differentiation or selection criteria.

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