get_player_count

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It states the tool retrieves data ('Get'), implying a read-only operation, but doesn't mention potential limitations like rate limits, authentication requirements, data freshness (e.g., real-time vs cached), or error conditions. This leaves significant gaps for a tool with no annotation coverage.

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, direct sentence with no wasted words. It front-loads the core purpose efficiently, making it easy to parse while conveying essential information without unnecessary elaboration.

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 simple read operation with one well-documented parameter and no output schema, the description is minimally adequate. However, without annotations or output schema, it lacks details on return format (e.g., numeric count, timestamp), error handling, or dependencies, leaving room for improvement in 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?

The input schema has 100% description coverage, with the single parameter 'app_id' clearly documented as 'Steam application ID'. The description adds no additional parameter information beyond implying it's for a 'game', which aligns with the schema. This meets the baseline for high schema coverage.

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 clearly states the action ('Get') and resource ('current number of players in a game'), making the tool's purpose immediately understandable. However, it doesn't explicitly differentiate from sibling tools like 'get_game_stats' or 'get_game_details' that might also provide player-related information, preventing a perfect score.

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 provides no guidance on when to use this tool versus alternatives. With many sibling tools (e.g., 'get_game_stats', 'get_player_summary'), there's no indication of whether this is the primary method for player count data or if other tools might overlap, leaving usage context unclear.

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