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

While annotations clarify its safe, closed-world status, the description reinforces that it is a 'step-by-step guidance' tool. This adds useful context about the format of the output (instructional) beyond what the technical annotations provide.

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, highly concise sentence that front-loads the core value proposition and is extremely efficient.

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 that it is a pure knowledge/guidance retrieval tool with no parameters, the description is completely sufficient to guide an agent on when and why to invoke it.

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 0 parameters and has 100% schema coverage, the baseline score is 4. The description adds no semantic meaning regarding parameters because none exist.

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 its purpose is to provide 'step-by-step guidance for measuring a closet.' It is distinct from related sibling tools like price estimation and quote requests.

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?

It explicitly dictates when to use this tool: 'before getting an estimate or requesting a quote,' providing a perfect context for its utility relative to other tools.

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