get_library_stats

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

No annotations provided, and the description doesn't disclose whether this tool is read-only, requires authentication, or any other behavioral traits. Minimal transparency.

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 concise (one phrase), but it is too brief to be truly useful. It earns its place by being short but lacks substance.

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 no output schema and minimal description, the tool's behavior and return values are unclear. For a statistics tool, more detail on what data is returned would be expected.

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 one optional parameter with a clear description, and schema coverage is 100%. The description adds little beyond the schema, but the parameter's purpose is understandable from the context.

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?

Description states it gets library-specific statistics, which is clear but vague. It does not specify what statistics are included, and fails to differentiate from other stats tools like get_user_stats or get_watch_stats.

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?

No guidance on when to use this tool versus alternatives. The description provides no context about typical use cases or limitations.

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