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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safe read-only nature is covered. The description adds that results are 'current' (freshness) and shaped as cards/headlines, but says nothing about pagination, result caps, or coverage breadth for a live-scraped sports feed.

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?

Two tight sentences with the action and the parameter requirement front-loaded, and zero filler. Every clause carries information the agent needs before calling.

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?

For a single-parameter read tool with an output schema already describing returns, the description covers purpose, scope, and the input prerequisite adequately. Missing only cross-tool disambiguation against skysports_news/skysports_article for full completeness.

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 already enumerates the valid section slugs, so the description adds little parameter detail beyond the schema. Its only addition is pointing at skysports_sections as the authoritative slug source, which is a modest navigational hint – 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+resource ('Fetch current article cards and headlines') scoped to 'one Sky Sports section', which distinguishes it from the site-wide news tools. It references the sibling skysports_sections for slug sourcing, though it doesn't explicitly contrast with skysports_news or skysports_article.

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 ('Provide a section slug from skysports_sections') that routes the agent to the right companion tool before calling this one. It offers no explicit when-not-to-use condition, so it falls short of a 5.

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