steam_compare_players

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false, covering the safety profile. The description adds the comparison scope (shared games and relative playtime) but does not disclose additional behaviors like missing-profile handling, rate limits, or data source staleness.

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?

The description is a single, front-loaded sentence with no filler. Every word contributes meaning, and it conveys the essential comparison operation efficiently.

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?

The tool is relatively simple, annotations cover safety, and the input schema is rich. The description plus schema are sufficient for correct invocation; however, it lacks mention of potential restrictions such as Steam profile privacy, which could affect usage.

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?

The description does not directly explain parameters, but the input schema includes detailed descriptions for steamid_a, steamid_b, limit, and response_format. The description adds high-level result semantics ('shared games and who has played each more') that help understand the tool's purpose, though it does not compensate for any schema gaps.

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 identifies a specific verb ('Compare') and resource ('two users' libraries'), and clarifies the output ('shared games and who has played each more'). This clearly differentiates it from sibling tools like steam_get_owned_games or steam_find_friends_who_own.

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 description implies the tool is for comparing two players' libraries, but it does not explicitly state when to use it versus alternatives, mention prerequisites (e.g., public profiles), or provide exclusions. Context is clear but not elaborated.

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