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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and external-fetch behavior are covered. The description adds the output scope (profile + recent articles), but does not disclose pagination of articles, URL format requirements, or how 'recent' is bounded.

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, front-loaded sentence listing the returned contents. No waste, though it is quite terse and lacks any operational 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?

An output schema exists, so return fields needn't be fully described, yet the description still does not address the critical unknown: what url to supply. For a single-param tool with no output schema detail and no annotations about input, this leaves the calling agent under-informed.

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% for the single required 'url' param, so the description must compensate. It only implies a DW author context, but never says the url must point to a DW correspondent profile page or what format is accepted. With one param and zero schema description, this is a clear gap.

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 (a DW correspondent's public profile) and enumerates the returned fields (name, expertise, biography, recent articles). It distinguishes from siblings like dw_article and dw_headlines by naming 'correspondent profile'. However it does not explicitly contrast with the sibling dw_author pattern or explain the url input.

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?

No when-to-use guidance, no mention of when to prefer this over dw_article or dw_headlines, and no note that a DW author URL is required. The agent must infer everything.

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