lineups

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

No annotations are supplied, so the description carries the full behavioral burden and discloses nothing. It does not state whether these are confirmed or probable lineups, whether they are available pre-match, or what happens when a fixture has no published lineup.

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 definition is five words long with no waste, but it is under-specified rather than concise. There is no structure beyond the title and no sentence that conveys actionable information.

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 tool with no annotations and no output schema, the description should at minimum sketch the returned lineup structure or its availability conditions. Neither is present, leaving the agent unable to predict the response shape from the definition alone.

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?

There is a single parameter with 100% schema description coverage ('Fixture id'), so the schema already documents it fully. The description only mirrors that with 'for a fixture' and adds no format or sourcing detail, making the baseline 3 appropriate.

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 is a noun fragment that essentially restates the tool name, adding only the qualifier 'for a fixture'. It does not say what a lineup entry contains (starting XI, substitutes, formation) or use a verb like 'get/retrieve', so it sits close to tautology.

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?

There is no guidance on when to call this versus siblings such as fixtures, events, player_stats, or live_scores. The agent must infer that lineups are a per-fixture sub-resource tied to a fixture id, with no stated prerequisites such as match timing or availability.

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