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

No annotations are provided, so the description carries the full burden of disclosure. It clearly states the return type (markdown documentation) and the target resource (Slate component), which is sufficient for a read-only fetch. It does not mention error handling or authentication, but the simplicity of the operation makes this acceptable.

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, front-loaded sentence that gets straight to the point. Every word earns its place by conveying the action, target, and format. No fluff or irrelevant details.

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?

For a simple tool with one parameter and no output schema, the description is quite complete. It specifies the input (component name) and output (markdown documentation) sufficiently. It might be slightly improved by noting that documentation is specific to Slate components, but this is a minor omission given the tool name and sibling context.

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 description coverage is 100% for the 'name' parameter, as the schema already provides a detailed description and examples. The tool description adds only generic examples ('button, dialog, input') that are slightly different from the schema's examples ('alert-dialog', 'dark-mode-toggle') but do not add substantial new meaning. Baseline 3 is appropriate given high schema coverage.

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 uses a specific verb ('Fetch') and clearly defines the resource ('markdown documentation for a Slate component'), with concrete examples ('button, dialog, input'). It distinguishes itself from sibling tools like get_component_source (source code) and get_docs_page (generic docs page) by specifying 'component' docs in markdown format.

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 implicitly tells the agent when to use this tool: whenever markdown documentation for a specific Slate component is needed. It provides clear context but does not explicitly mention alternatives or exclusions, which would be needed for a 5. Sibling tools are not named, but the resource specificity helps avoid confusion.

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