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

With no annotations provided, the description carries the burden. It discloses useful traits like per-endpoint pricing and global coverage, but does not mention authentication, rate limits, error behavior, or return format. This adds some context but lacks depth, so a score of 3 is appropriate.

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 organized with clear headings and bullet lists for endpoints, making it easy to scan. It includes pricing and coverage details efficiently. It is slightly long, but every line provides distinct information, so it earns a 4 rather than a 5.

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?

Given the tool's complexity (11 endpoints, 28 parameters, no output schema), the description is incomplete. It lists endpoints but fails to specify required parameters per endpoint, provide examples, or describe response structures. This leaves significant gaps in understanding how to actually invoke the tool.

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?

Although schema coverage is 100%, the parameter descriptions are tautological (e.g., 'ages', 'game', 'lang') and provide no real meaning. The tool description does not map endpoints to the 28 parameters, leaving the agent unable to know which arguments to supply for each action. This is a critical gap that the description fails to fill.

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 'Board-game and tabletop intelligence' and enumerates 11 specific endpoints (e.g., 'recommend', 'compare', 'collection-value'), each with a brief function. This is a specific verb+resource and distinguishes it from sibling tools focused on other domains.

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 gives clear context on when to use this tool (board-game related queries) and provides details like coverage (DE/UK/EU/US markets) and language-awareness. However, it does not explicitly mention when not to use it or suggest alternatives among sibling tools, so it stops 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.