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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety profile and that content is externally sourced. The description adds only modest extra context: that the result is 'current' and limited to a single public section, with no detail on volume, ordering, or pagination.

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 tight sentence with the resource stated first and the constraint clause second. Every element earns its place; there is no filler or redundancy.

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-value explanation is unnecessary, and the definition covers purpose, scope, and the dependency on dw_sections. It is slightly thin on whether results are capped or ordered, which for a headlines feed would help an agent plan calls.

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% and the schema itself enumerates the 18 valid section slugs, so the description adds no new meaning about the parameter beyond reiterating that it is a section. Baseline 3 is appropriate when the schema does the heavy lifting.

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 verb and resource ('Current DW headlines'), plus scope ('for one public section'), which is precise and actionable. It does not, however, explicitly distinguish itself from nearby siblings like dw_news or dw_article, so an agent must infer the difference.

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?

Supplies a clear prerequisite and indirect alternative: the section value 'must come from dw_sections', which routes the agent to the right companion tool first. It gives no explicit when-not-to-use guidance, but the single-section constraint is implied by 'one public section'.

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