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

Annotations already cover the safety profile (readOnlyHint, openWorldHint), so the description's job is narrower. It adds two useful behavioral facts beyond the structured fields: results are 'current' (recency-bounded, not an archive) and coverage is limited to a single section rather than aggregating across the paper. Pagination and result-count behavior remain undisclosed.

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 sentence, front-loaded with the core action and resource, followed immediately by the constraint. No filler, no restatement of the tool name.

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 a full output schema and 100%-covered parameters, the description need not explain returns or the section format. It covers the essential invocation contract for a one-parameter feed tool; only sibling disambiguation against khaleejtimes_news and khaleejtimes_article 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 schema itself enumerates every valid slug, so the parameter is already fully documented in structured data. The description's 'must come from khaleejtimes_sections' adds a provenance rule but no syntax or format detail beyond the enum, so the baseline 3 applies.

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?

Names a specific verb and resource ('Khaleej Times headlines') plus a scoping constraint ('for one public section'), which is more precise than a bare name restatement. It stops short of distinguishing itself from the closely related khaleejtimes_news and khaleejtimes_article siblings, so an agent still has to infer which one is the headline feed.

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?

Gives an explicit prerequisite chain: the section value 'must come from khaleejtimes_sections', telling the agent to call that sibling first rather than guessing slugs. It offers no when-not guidance or contrast with khaleejtimes_news/khaleejtimes_article, so the selection context is clear but not complete.

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