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

Annotations already declare readOnlyHint=true, openWorldHint=false, and destructiveHint=false, so the safety profile is covered. The description adds useful context by stating the content is 'ungated,' matches the human page, and which slugs are known, without contradicting the 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?

Two sentences carry all the essential information with no filler. The resource and returned sections are front-loaded, and the known-slug note is a compact, useful inclusion.

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 one-parameter, read-only retrieval tool with an output schema and annotations, this description is complete: it identifies the resource, the content shape, the access properties, and the valid slug. Nothing required to invoke it correctly is missing.

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 100% and the only required parameter is a string slug, so the schema already defines meaning. The description adds the concrete known slug value and its hyphenated format, which is genuinely helpful beyond the schema's generic 'Magazine piece slug.'

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?

Description opens with a specific verb ('Returns') and names the exact resource ('one published magazine piece's question, per-writer sections, and editor's coda'), distinguishing it from sibling library/guide tools by resource type. The detail 'same content the human page renders' makes the scope clear.

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 is clear this tool is for fetching a single magazine piece by known slug, and the 'Known slugs (1)' line implies it should be used only when the slug is known. However, it does not explicitly state when to prefer get_guide, get_library_work, or search_library, or what to do when the slug is unknown.

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