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

With no annotations, the description carries full responsibility for behavioral disclosure. It does not state what the output looks like, how it processes inputs, whether it is read-only, or any side effects. The phrase 'real components instead of generic advice' hints at output but lacks detail, so transparency is inadequate.

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 two sentences, front-loaded with the main action, and every word earns its place. The component list is lengthy but necessary for specificity, and there is no redundant or filler content.

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?

The tool lacks an output schema, so the description must explain return values. It mentions the kit includes certain primitives but not the format, structure, or how the agent should use the result. The usage line gives some context but leaves significant gaps, especially for a 7-parameter tool with varied optional inputs.

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 100%, so the baseline is 3. The description adds no extra meaning about the parameters; it only lists output-like concepts (type scale, spacing) without linking them to inputs. Thus it does not exceed the schema's documentation value.

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 what the tool does: 'Assemble a coherent premium build kit' from specific primitives (type scale, spacing rhythm, hero background, etc.). It distinguishes itself from sibling tools by emphasizing the assembly aspect and lists concrete components, making its purpose unambiguous.

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 explicitly states when to use: 'Use before building a luxury/high-end/Framer-like page so the agent has real components instead of generic advice.' It provides clear context but does not mention when not to use or name alternative tools, so it stops short of full exclusion guidance.

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