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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and openness are covered. The description adds useful scope context ('current', 'public section') but says nothing about result count, pagination, or freshness window beyond the word 'current'.

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 with zero waste. The resource and scope come first, and the prerequisite clause follows naturally.

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 no explanation. For a simple one-param tool, the description covers purpose, scope, and the parameter's value source adequately; only pagination/count behavior is unstated.

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 'section' parameter, so the description must compensate. It does so meaningfully by specifying the valid value source (khaleejtimes_sections) and constraining to public sections, which the bare string schema does not convey.

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+resource+scope: 'Current Khaleej Times headlines for one public section.' An agent knows it returns headlines rather than articles or the section list. It does not explicitly differentiate from siblings like khaleejtimes_news or khaleejtimes_article, which keeps it from a 5.

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 clause 'section must come from khaleejtimes_sections' gives a concrete prerequisite that routes the agent through the sibling tool first. It is clear context, though it offers no explicit when-to-use-vs-alternative guidance or exclusions.

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