list_lists_popular

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

Annotations already mark this as read-only, open-world, idempotent, and non-destructive. The description adds useful behavioral detail on pagination: defaults vary, low default of ~10, and limits are clamped at ~250 rather than rejected. No contradiction with 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?

The one-line purpose and endpoint are front-loaded and the parameter list is organized. However, repeated 'Query parameter' entries add noise, and the watchnow block has formatting/syntax inconsistencies that could be tightened.

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 13 parameters, 0% schema coverage, and no alternative guidance, the description is not complete enough. Filter formats, date formats, and how parameters combine are left undefined, leaving an agent to guess at correct invocation despite the output schema and read-only annotations.

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 coverage is 0%, so the description carries the full burden for parameter meaning. It gives meaningful detail for limit, page, and watchnow, but eight parameters are dismissed as merely 'Query parameter,' leaving their expected formats and values unexplained.

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?

States a clear action and resource: 'Get popular lists' plus the endpoint GET /lists/popular. It does not explicitly differentiate from nearby siblings like get_lists_popular_by_type or list_lists_trending, so it loses the top point.

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 choose this tool over alternatives; siblings like list_lists_trending and get_lists_popular_by_type are never mentioned. The name and endpoint imply the use case, but the description provides no explicit context or exclusions.

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