Get featured store sections

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

Annotations already declare readOnlyHint=true and openWorldHint=true, establishing a safe read-only profile. The description adds value by noting 'No API key required' and clarifying that the response is a comprehensive bundle ('all in one call') of multiple lists, which goes beyond the annotations.

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 concise sentences: the first packs the tool's purpose, scope, and return contents; the second provides alternatives and the auth note. No waste, front-loaded with the core action, and easily scannable.

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?

With an output schema present, the description doesn't need to detail return structure, but it still mentions the key return elements (games with appid and price). It covers use case, alternatives, auth, and the fact that it's a single call, making it fully self-sufficient for an agent.

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 description coverage is 100% with both parameters (country and language) already described as overrides. The description does not add further parameter details but also doesn't need to, as the schema handles semantics fully. Baseline 3 is appropriate.

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?

The description names a specific verb ('Get'), a specific resource ('Steam store's featured sections'), and enumerates the exact contents (specials, top sellers, new releases, coming soon) with return details (list of games with appid and price). It also distinguishes itself from siblings by framing it as a single-call front-page overview.

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 states the primary use case (general store front page overview) and provides clear alternatives for narrower needs: 'For just current discounts use get_specials (lighter), or discover_games for catalog-wide deals with filters.' This tells the agent exactly when to choose this tool versus siblings.

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