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 only that results are 'current' and scoped to a single public section; with an output schema present, return values need no further explanation, so this is a modest contribution over structured data.

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 with no filler, and the scope limitation plus the value-source constraint are packed in without burying the purpose. Every clause earns its place.

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 one-parameter list tool with an output schema, the description covers purpose, scope, and where valid section values originate. It is complete enough to invoke correctly; only the relationship to sibling news/article tools is left 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 100% and the schema already lists the valid section slugs, so the baseline would be 3. The description adds real meaning by tying those values to their authoritative source (ign_sections), which tells the agent how to obtain a valid value rather than a stale hardcoded list.

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 IGN headlines) with an explicit scope constraint ('one public section'). It does not distinguish itself from close siblings like ign_news or ign_article, so an agent must infer the boundary from the name alone, but the core purpose is unambiguous.

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?

Provides one genuinely useful routing hint: valid section values come from ign_sections. Beyond that, there is no guidance on when this tool is preferred over ign_news or ign_article, leaving the alternative selection implicit.

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