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

Annotations declare readOnlyHint and openWorldHint, covering the safety profile. The description adds that the archive includes name and recent articles, but doesn't clarify how 'recent' is bounded, whether results are paginated, or the expected URL format.

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?

A single efficient sentence that front-loads the resource and scope. No wasted words, though extremely brief.

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 an output schema present, return values needn't be described. The description covers the core purpose, but leaves the URL parameter format and the 'recent' window unspecified, which are important for correct invocation.

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 0%, so the description must define the 'url' parameter. It implies the URL identifies an author archive, but doesn't specify the expected URL format or whether it's the author's page URL. Baseline 3 for adequate but incomplete 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?

States a specific resource (One Punch author's public archive) with a clear scope: name and recent articles. An agent can distinguish this from punch_article and punch_headlines. Slightly terse but effective.

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 word 'archive' implies a profile-fetch operation, but there's no explicit when-to-use guidance or mention of alternatives like punch_article for individual articles. Usage is implied rather than explained.

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