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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds genuine behavioral context beyond them: this returns article body paragraphs, and live-blog pages are handled differently, returning timestamped updates as paragraphs rather than a single body. Rate limits or auth requirements are not addressed.

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?

Three short sentences, front-loaded with the primary action, then the edge case, then the discovery alternative. Every sentence carries distinct information with no filler.

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 values need not be enumerated, and the live-blog caveat covers the main ambiguity in what 'paragraphs' means. A note on non-article or paywalled URLs would make it fully complete, but nothing essential for correct invocation 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?

Only one parameter, and schema description coverage is 100%, so the schema already documents that a canonical Khaleej Times article URL is expected. The description's phrase 'from its canonical URL' reinforces the same constraint but adds no new syntax or format detail. 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?

States a specific verb (Fetch) and resource (Khaleej Times article details and body paragraphs) bounded by an input (canonical URL), which is exactly what distinguishes it from khaleejtimes_headlines and khaleejtimes_news. It even discloses a variant resource shape (live-blog pages returning timestamped update headlines as paragraphs).

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?

Explicitly names the companion tool and the condition that selects it: use khaleejtimes_headlines to discover article links, implying this tool is for the fetch step after a link exists. No explicit statement of when-not-to-use (e.g. non-article or non-canonical URLs), so it stops short of 5.

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