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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered. The description adds meaningful constraints beyond them: headlines are 'current' (freshness) and limited to 'public' sections, implying restricted/private sections are unavailable.

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 prerequisite appended. Nothing is wasted, though the terseness leaves a little room for clarity about the section format.

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. With the annotations covering safety and the description covering the parameter source, the definition is essentially complete for this simple headlines tool; only alternative-selection guidance is thin.

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% and the single 'section' param has no schema description, so the description must compensate. It does: the valid value source ('must come from androidauthority_sections') is exactly the missing information. Format details of the section string are still unspecified.

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 Android Authority headlines for one public section'. Scope ('one public section') and freshness ('current') are clear, which distinguishes it from the article/sections siblings, though it never explicitly contrasts with androidauthority_news.

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 a concrete prerequisite: the section value 'must come from androidauthority_sections', routing the agent to the right sibling first. It does not state when to prefer androidauthority_news or androidauthority_article instead, so a small gap remains.

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