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

No annotations are provided, so the description carries the burden, and it does disclose the scope of content returned and that the two filter params narrow the result. However, it does not state that this is a read-only retrieval operation or describe the response shape, so the behavioral picture is only partial.

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?

Front-loaded with the purpose in the first clause, followed by an informative content inventory. The long list of covered topics is justified because it tells the agent what content is retrievable, and there is little wasted text.

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?

With no output schema and only three optional parameters, the description adequately covers what the tool returns and how to narrow it. The remaining gap — how this guide relates to the other guide-style siblings — is a differentiation issue rather than a missing detail for calling the tool correctly.

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 only 33%: 'brief' is documented in the schema itself, while 'noodle' and 'page_type' are bare enums. The description partially compensates by explaining that these two params narrow the guide, but it never explains how a given page_type or noodle value changes the content returned.

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 states a clear verb+resource: it returns a website-design guide covering process, principles, page anatomies, noodle-family composition and a launch checklist. It is more specific than a bare 'guide' but never distinguishes itself from close siblings like get_design_guide or get_design_language, leaving the agent to infer which guide to open.

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?

Usage is only implied: 'Narrow it with page_type and noodle' tells the agent how to filter, but there is no statement of when this guide is the right choice versus get_design_guide/get_design_language/get_accessibility_notes, and no exclusions or prerequisites.

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