layout_visualizer

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

With no annotations provided, the description carries the full burden. It discloses that the tool launches a browser UI, supports drag-and-drop, generates JSON in real-time, and requires copying the output—implying it is a read-only design tool. It does not mention potential side effects like session requirements, but given the nature of a visualizer, this is sufficiently transparent.

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 front-loaded with a single, clear action sentence, followed by a compact bulleted list of capabilities. Every sentence earns its place—no filler or redundant phrasing.

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?

Given the tool's zero-parameter signature and the presence of an output schema (not shown), the description fully explains what the tool does and how its output integrates with the cases_create_layout workflow. It leaves no ambiguity about the tool's purpose or usage.

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 the schema shows 100% coverage. The description adds no parameter-level detail because none is needed, which aligns with the baseline score of 4 for no-parameter tools.

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 opens with a specific action ('Launch the Cases Layout Visualizer in your browser') and clearly identifies the resource and purpose. The bulleted list distinguishes this tool from siblings like cases_create_layout by emphasizing the interactive drag-and-drop interface that generates JSON, rather than directly creating layouts.

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 clear context on how to use the tool: it is for visually designing layouts and generating JSON for later use with cases_create_layout. While it doesn't explicitly state when not to use it or list alternatives, the workflow implication is strong and unique among siblings.

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