get_expected_lineups_by_player

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

With no annotations available, the description carries full burden but only states the basic function and premium nature. It does not disclose read-only behavior, authentication needs, rate limits, or other operational traits.

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 very concise (single sentence), front-loaded with the core action. While brief, it avoids unnecessary words. However, it may be too minimal given the tool's complexity.

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 7 parameters and no output schema, the description is insufficient. It fails to explain premium feature implications, pagination, filtering, or how the output relates to similar tools. More context is needed for effective use.

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 100%, so the schema already documents all parameters. The description adds 'for a player' which maps to the required player_id, but does not enrich understanding of include, select, filters, or pagination. Baseline 3 applies.

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), resource (expected lineup entries), and scope (for a player), and notes it's a premium feature. However, it does not explicitly differentiate from the sibling tool 'get_expected_lineups_by_team'.

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, no when-not-to-use instructions, and no context about the premium feature's prerequisites or limitations.

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