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

Annotations already indicate read-only, idempotent, non-destructive behavior. The description adds useful behavioral details beyond those annotations: it returns the full markdown body and notes the source URL appears at the end. No contradiction with annotations.

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?

One efficient, front-loaded sentence carries all essential meaning. The examples are compact and directly aid correct usage without excessive detail.

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 single-parameter, read-only tool, the description is largely complete: it states input format, accepted id types, output content type, and the presence of a source URL. Only minor open areas remain such as explicit not-found behavior, which is not essential at this complexity level.

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 input schema already covers the single parameter completely. The description enriches it slightly with examples of accepted id formats (magazine/30pyeong-cost, guide/process-order) and URL acceptance, but the schema and description mostly overlap.

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 the action (fetch full document body in markdown) and the resource (docs identified by search id or nmjib.com URL). It is clear enough to be understood, but it does not explicitly differentiate itself from sibling tools beyond the generic 'full body' framing.

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 gives practical usage context: use IDs from search results or nmjib.com URLs. This tells an agent when to call the tool, though it does not explicitly name alternatives or state when not to use it.

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